Tripping Through Safety Relays: A Practical Guide for Railway Operators

The intricate electrical systems that power modern railways are the backbone of efficient and reliable transportation. These systems operate with high voltages and substantial currents, demanding robust safety measures to protect both the personnel who operate and maintain the railway and the valuable equipment itself. Among the most critical components in this safety framework are safety relays. These specialized devices continuously monitor electrical circuits, acting as vigilant sentinels against a range of potentially hazardous conditions. When a safety relay detects an anomaly, it triggers a protective response, often interrupting power to prevent accidents or equipment damage. Therefore, a thorough understanding of these relays and the correct procedures for responding to their activation, or "tripping," is of paramount importance for all railway operators and maintenance technicians. Knowing how to interpret a relay trip and take appropriate action can significantly minimize operational disruptions, prevent further equipment damage, and, most importantly, safeguard the lives of those working on or around the railway.

Understanding the Basics: What are Safety Relays?

Safety relays are specifically designed electromechanical switching devices that play a vital role in monitoring safety-critical electrical circuits within railway systems 1. Their fundamental purpose is to identify any deviations from the normal and safe operating parameters of these circuits, such as the occurrence of overcurrents, the presence of unintended current paths to the ground (earth faults), or the malfunction of essential electrical equipment 1. When a safety relay detects such a potentially hazardous condition, it acts as a crucial intermediary between the safety sensors and the power supply to the implicated equipment 2. Upon fault detection, the relay initiates predefined protection procedures, the primary aim of which is to immediately bring the affected part of the system to a secure and non-hazardous state 1.

Unlike conventional relays, which are typically employed for general control functions within electrical systems, safety relays are engineered to adhere to stringent safety standards and incorporate what are known as fail-safe principles 2. This means that in the event of a failure within the safety relay itself or a loss of power to it, the relay is designed to revert to a safe condition, typically by interrupting the power supply to the protected circuit. Furthermore, safety relays are built with redundancy and self-monitoring capabilities, significantly enhancing the reliability of the overall safety system 1. They often contain multiple internal circuits that perform the same monitoring function 1. This redundancy ensures that even if one of these internal circuits malfunctions, the other can still detect a fault and trigger the necessary safety response 2. Additionally, safety relays continuously check their own operation and the status of the input signals they receive from safety devices, as well as the output signals they send to control the power to equipment 2. If an internal fault within the relay is detected, or if a discrepancy arises in the input or output signals, the safety relay will typically prevent the system from being restarted until the detected fault is manually acknowledged and addressed 1. A key feature in many safety relays is the use of "positive-guided contacts," also referred to as "positively driven contacts" or "all-or-nothing relays" 4. These contacts are mechanically linked in such a way that if a normally open contact becomes stuck in the closed position (perhaps due to welding from a fault), the corresponding normally closed contact is physically prevented from closing simultaneously 4. This mechanical linkage is crucial in preventing a dangerous scenario where power might be inadvertently restored to a circuit that is still experiencing a fault.

In the context of railway transportation, safety relays are of paramount importance for ensuring the safe and reliable operation of trains 5. Fail-safe relays, a specific type of safety relay, are integral to railway signaling and control systems 5. They act as critical failover mechanisms, guaranteeing that railway signals accurately reflect the condition of the track network 5. In the event of a power loss or any other malfunction, these relays automatically revert to a safe state, thereby preventing signal errors, track misalignments, or other critical failures that could lead to severe accidents such as collisions or derailments 5. Furthermore, safety relays play a crucial role within interlocking systems, which are responsible for managing train movements through complex railway junctions and intersections 5. These relays ensure that switches and signals operate in a coordinated and harmonious manner, preventing conflicting train movements and maintaining the overall safety of railway traffic 5. The reliability provided by safety relays is also essential for the effective functioning of Positive Train Control (PTC) systems, which are designed to automatically intervene and control train movements in situations where safety thresholds are at risk of being exceeded 5. By adhering to fail-safe principles, safety relays contribute significantly to the robustness and dependability of PTC systems, ultimately enhancing the overall safety of railway operations 5. Beyond their direct role in preventing accidents, the use of safety relays is also crucial for railway operators to achieve and maintain compliance with the stringent safety standards and regulations mandated by railway authorities and governing bodies 6. While 1 provides examples of safety relay applications in general industrial settings, such as emergency stop systems and access control, these functions are equally vital in the railway environment. For instance, safety relays ensure the immediate cutoff of high-voltage power in emergency situations and monitor the integrity of safety interlocks on compartments housing high-voltage equipment, preventing unauthorized access when the equipment is energized.

The inherent fail-safe design of safety relays 2 is particularly critical in the railway industry due to the potentially catastrophic consequences of system failures. Unlike in many industrial applications where a malfunction might simply lead to a halt in production, a failure in a railway safety system could result in severe injuries, loss of life, or extensive damage to infrastructure. The fact that these relays are engineered to automatically default to a safe state upon experiencing a power loss or internal fault underscores their vital role in mitigating risks within the railway environment. This built-in safety mechanism ensures that even if the relay's operation is disrupted, the system will move to a secure configuration, preventing the occurrence of hazardous scenarios. This fundamental principle of defaulting to safety is a cornerstone of railway safety engineering.

Furthermore, the integration of safety relays with advanced railway technologies like PTC 5 demonstrates their continued adaptability and relevance in the modernization of railway systems. Despite the increasing reliance on sophisticated software and digital control in contemporary railway operations, the fundamental reliability and hardware-based nature of safety relays remain indispensable for ensuring the integrity of critical safety functions. While modern railway systems are increasingly dependent on complex software and digital control systems, the ultimate layer of safety often relies on robust, hardware-based components such as safety relays. Their ability to operate independently of software control, as highlighted in 4 with respect to emergency stop circuits, provides a crucial backup. This ensures that core safety functions are maintained even in the event of software malfunctions or cybersecurity breaches. The combination of this traditional hardware reliability with modern technological integration is a key factor in the ongoing evolution of railway safety.

Meet the Relays: An Overview of QLA, QLM, QOA, QOP, and QRSI

Within the intricate electrical systems of railway locomotives, a specific set of safety relays plays a crucial role in ensuring operational safety. These include the QLA, QLM, QOA, QOP-1 and QOP-2, and QRSI-1 and QRSI-2 relays. Each of these relays is meticulously designed to monitor and provide protection to distinct aspects of the locomotive's complex electrical circuits. They act as vital safeguards against various types of electrical faults and potential equipment malfunctions. Understanding the individual function of each of these relays is essential for railway operators and maintenance personnel to effectively diagnose and respond to any trips that may occur, thereby minimizing operational disruptions and ensuring the highest levels of safety.

The QLM relay functions as the Main Overload Relay 9. Its primary responsibility is to protect the locomotive's main transformer from damage that could result from excessive current draw or overloading. A trip of the QLM relay indicates a potentially serious fault either within the main transformer itself or in the electrical equipment that is directly connected to it.

QRSI-1 and QRSI-2 are identified as Silicon Rectifier Overcurrent Relays 9. These relays are strategically located within the traction power circuits of the locomotive. Their main purpose is to protect critical equipment such as the traction motors, which provide the locomotive's motive power, and the silicon rectifiers (often abbreviated as RSI), which are responsible for converting the incoming AC electrical power into the DC power that is required by the traction motors.

The QOP-1 and QOP-2 relays serve as the Main Earth Fault Relays 9. Their function is to detect any unintended paths for electrical current to flow to the ground, commonly known as earth faults, within the locomotive's main traction circuit as well as in the main circuit breaker 9). Earth faults can pose a significant electrical hazard, and the QOP relays are designed to quickly identify and respond to these conditions.

The QOA relay is designated as the Earth Fault Relay for Auxiliaries 9. Its specific role is to monitor the auxiliary electrical circuits within the locomotive. These circuits supply power to a range of auxiliary equipment, including blowers used for cooling, air compressors that provide compressed air for various systems, and heating systems for the crew compartments. The QOA relay protects this auxiliary equipment from the dangers associated with earth faults in their respective circuits.

The QLA relay is associated with the Auxiliary Power Circuit 14. While its precise function is not as explicitly detailed as some of the other relays, its activation, or tripping, indicates that there is an issue within the broader auxiliary power system of the locomotive. This system provides the necessary electrical power for a variety of auxiliary functions that are essential for the operation and comfort within the locomotive.

The distinct naming and specific functions of each of these safety relays 9 demonstrate a well-defined and layered approach to electrical protection within railway locomotives. This specialization allows for more targeted and efficient troubleshooting when a relay trip occurs. The particular relay that has tripped provides an immediate indication of the specific subsystem that is likely experiencing a problem. For example, if the QLM relay trips, the focus of the initial investigation will be on the main transformer and its associated circuits. Conversely, if the QOA relay trips, the attention will be directed towards the auxiliary electrical systems of the locomotive. This focused indication is invaluable as it significantly reduces the time required to diagnose and rectify electrical faults.

Immediate Actions Upon a Relay Trip: General Safety Checks

When a safety relay trips in a railway locomotive, the absolute priority must be safety. It is crucial to remain calm and strictly follow established railway safety protocols and the procedures outlined in the locomotive's operational manuals. The first step is to immediately observe the indicator target on the tripped relay. Take note of which specific relay has activated, as this provides the initial indication of where the potential fault might be located and the type of issue that might have occurred.

Following the identification of the tripped relay, a thorough inspection of the surrounding area should be conducted. Begin with a visual inspection. Carefully scan all accessible electrical compartments within the locomotive, paying close attention to equipment housings, ventilation grills, and any visible cable runs. One of the most critical areas to check is the HT (High Tension) compartment 10, as this compartment houses high-voltage equipment such as the main transformer and rectifiers. Also, visually inspect other major electrical components throughout the locomotive, including the traction motors, control panels, and enclosures for auxiliary equipment. Look for any telltale signs of trouble, such as smoke emanating from any of these areas, discoloration of components, charring or burn marks on wiring or equipment, or any other form of physical damage.

Next, perform an olfactory inspection. Carefully check for any unusual or acrid odors. Pay particular attention to the distinct smell of burning electrical insulation, which often has a sharp, pungent characteristic. Also, be alert for the smell of overheated electrical components or the odor of burning oil. Note the intensity and location of any unusual smells, as even a faint odor can be an early indicator of a developing electrical fault.

Finally, conduct an auditory inspection. Listen attentively for any abnormal sounds. These might include the crackling or buzzing sound of electrical arcing, which indicates a short circuit or insulation breakdown. Also, listen for any hissing sounds, which could suggest a release of pressure or a leak of air or another gas. Additionally, be alert for the sound of dripping or spraying oil, which could indicate a leak from a transformer or other oil-filled equipment.

Throughout these initial checks, it is paramount to prioritize safety. Never touch any electrical equipment that appears to be damaged or is suspected of being faulty. High voltages can persist even after a safety relay has tripped. If smoke is present, ensure that the area has adequate ventilation and immediately follow the established emergency procedures for dealing with potential electrical fires.

The combination of these visual, olfactory, and auditory checks, performed immediately upon a safety relay trip, forms a crucial first line of assessment. These sensory observations can often provide critical clues about the nature and potential severity of the electrical fault, allowing operators to make informed decisions about the necessary next steps and prioritize their personal safety. This proactive approach, relying on the operator's senses, can help prevent further damage to equipment and ensure the well-being of personnel before any attempts are made to manually intervene or reset the system.

Decoding the Drops: Relay-Specific Troubleshooting Guides

To effectively respond to a safety relay trip, it is essential to understand the specific procedures associated with each type of relay commonly found in railway locomotives. The following sections provide detailed troubleshooting guides for the QLM, QRSI, QOP, QOA, and QLA relays.

QLM Drops: Handling Main Overload Trips

The QLM relay, as the Main Overload Relay 9, is primarily responsible for protecting the main transformer from damage caused by excessive current or overloading. A trip of this relay indicates a potentially serious issue either within the transformer itself or in the equipment directly connected to it.

Upon a QLM trip, the initial checks should focus on the HT-2 compartment, looking for any smoke, burning smell, or fire 10. It is also important to check the oil trap chamber near the main transformer for any presence of oil, which could indicate a leak 10. Inspect for any oil splashes from the GR (Grid Resistor) safety valve or the TFR (Transformer) explosion vent located underneath the locomotive 10. Additionally, check the TFR and GR oil levels for any abnormal increase 10. Examine the CGR (Tap Changer Transition Contactor) arc chutes, the TFR terminals 10), roof bushing bars 10, RCAPTFWA & CAPTWA panels 11, RGR (Tap Changer Transition Resistor) 10, RPGR 10, and A34 bushings 10 for any signs of abnormality.

If, after these thorough checks, no immediate abnormalities are found, attempt to reset the QLM target once by turning it in the clockwise direction 10. Following the reset, carefully resume traction, while closely monitoring the locomotive's performance and electrical parameters for any recurrence of the issue 10.

When specifically checking for oil issues, remember that the TFP (Traction Power Transformer) 11 is typically oil-immersed for insulation and cooling 25. Any oil leak or a significant increase in the oil level 10 can signify a serious internal fault requiring the attention of maintenance personnel. The GR (Grid Resistor), often part of the tap changer mechanism 24, might show oil splashes from its safety valve 10, indicating an internal problem. The TFP oil trap chamber is designed to collect any oil leaking from the main transformer 10. The presence of oil here is a clear sign of a transformer leak that needs to be investigated by qualified staff.

If any abnormalities were observed during the initial checks, or if the QLM relay trips a second time, it is crucial to DO NOT attempt to reset the relay target again 10. Immediately contact the Traffic and Loco Control (TLC) for further diagnostic instructions and guidance 10, and make a detailed entry in the locomotive's logbook 10.

QRSI Drops: Addressing Silicon Rectifier Overcurrent

The QRSI-1 and QRSI-2 relays serve as Overcurrent Relays for the Silicon Rectifier 9. Their primary function is to protect the traction power circuits from excessive current, safeguarding components like the traction motors (TM), silicon rectifiers (RSI), and line contactors.

Upon a QRSI trip, carefully check for smoke, burning smell, flash/weld marks, or any other visible abnormalities in RSI-1/2, SL-1/2 24), CTF-1/2/3 (likely Current Transformers), L1, L2, L3 J1, L4, L5, L6 J2 (likely specific terminals or connections), QD1/2 (likely Quick Drop devices), TM 1-6 (Traction Motors), U1-U6, A3/4 (likely motor terminals), and SJ (likely Shunts) 12.

If everything appears normal after this inspection, attempt to reset the QRSI relay target 12. Following the reset, accelerate the locomotive gradually, while closely observing the ammeters to ensure the current draw remains within normal limits 12.

If the QRSI relay continues to trip frequently, it indicates a persistent overcurrent condition, likely originating from one of the traction motors. In such cases, the potentially defective traction motors need to be systematically isolated using the Half Motor Cutout Switches (HMCS) 12. For a QRSI-1 drop 13, try isolating TM 1 first using the corresponding HMCS. Reset the relay, close the DJ, and resume traction. If QRSI-1 trips again, isolate TM 2, and repeat. If the tripping persists, isolate TM 3. For a QRSI-2 drop 12, isolate TM 6 first, then TM 5, and finally TM 4, one by one, if the relay keeps tripping. If the QRSI relay stops tripping after a specific motor is isolated, that motor is likely the source of the fault. The locomotive can often continue to operate with the faulty motor isolated, typically at a reduced load (e.g., 5/6th of the maximum permissible load) 12.

If the QRSI relay trips in all positions of the HMCS for the corresponding traction motors, normalize the HMCS and place the HVSI-1/2 (High Voltage Silicon Rectifier Isolation switches), HVMT-1/2 (High Voltage Motor Traction switches), and HVSL-1/2 (High Voltage Smoothing Reactor Isolation switches) in the '0' (OFF) position 12. Then, attempt to resume traction with a significantly reduced load (e.g., 50% of the maximum permissible load) and within the normal current rating 12. If the load requirements cannot be met under these conditions, contact TLC for further guidance 12.

QOP Drops: Managing Main Earth Faults

The QOP-1 and QOP-2 relays are Main Earth Fault Relays 9. Their critical function is to detect any unintended flow of current to the earth within the locomotive's primary traction power circuit and the main circuit breaker (DJ). A QOP trip indicates a potentially dangerous insulation failure or short circuit to the locomotive's frame.

Upon a QOP trip, immediately stop the train at a safe and convenient location 33. Thoroughly check the relevant traction power circuit (No. 1 for QOP-1, No. 2 for QOP-2) for any visible signs of smoke, fire, or any other abnormality 32. Carefully inspect the traction motor vent mesh for any foreign objects or wires protruding, indicating a possible banding failure 32. For a QOP-2 trip 12, also check the transformer terminals, RC damping panel, RSI-2, SL-2, CTF-2, QD2, Traction Motors 4, 5, 6, U5, U6, A4, CTF3, Q20, C145, SJ, and the ammeter shunt for any signs of damage or failure.

If a foreign body or loose wires are found projecting from a traction motor vent mesh, immediately isolate that specific traction motor on both the positive and negative sides using the appropriate isolation switches. Then, reset the QOP relay and proceed to clear the block section at a very low speed (not exceeding 15 Kmph) and contact TLC for further advice 33. If any other abnormality is detected in the traction power circuit, isolate the defective equipment if possible and then attempt to reset the QOP relay target. If the target resets, close the DJ and carefully resume traction 33.

If the QOP relay target does not reset after the initial checks, place the HQOP switch (HQOP-1 for QOP-1, HQOP-2 for QOP-2) in the OFF position 32. With the HQOP switch in the OFF position, reset the QOP relay 32. Immediately inform TLC about the QOP trip and the action taken (HQOP in OFF) 33. Proceed to clear the block section with the HQOP switch in the OFF position 33. If conditions permit, you might be instructed to isolate the corresponding RSI block (RSI-1 for QOP-1, RSI-2 for QOP-2) before clearing the section 33. After clearing the section, stop and secure the train, trip the DJ, lower the pantograph, switch off HBA (High Voltage Busbar), and operate HOM (Hand Operated Mechanism) to access the HT compartment for further investigation 33. Once inside, normalize the HQOP switch to the ON position. For QOP-1, you might then be instructed to perform specific bit packing procedures in junction box J1 to help identify the faulty traction motor 33. Note that bit packing might not be possible on locomotives with cam-type reversers 33.

It is critically important to remember: Do not use dynamic braking (DBR) if QOP-1 or QOP-2 is tripping 32. Dynamic braking 36 involves using the traction motors as generators, and if an earth fault exists in the traction circuit (as indicated by a QOP trip), engaging dynamic braking could exacerbate the fault or cause further damage.

If the QOP relay continues to trip even after placing the HQOP switch in the OFF position, also place the HOBA (High Voltage Busbar Auxiliary) switch in the OFF position and then attempt to reset the QOP relay 32. If the relay still does not reset after these steps, immediately contact TLC for further diagnostic instructions and assistance 33.

QOA Drops: Resolving Auxiliary Earth Faults

The QOA relay is the Earth Fault Relay for Auxiliaries 9, responsible for protecting the locomotive's auxiliary electrical equipment from earth faults.

Upon a QOA trip, thoroughly check all auxiliary power circuit equipment for smoke, burning smell, fire, or unusually high temperatures. This includes the ARNO converter 42, all auxiliary motors 46, the CHBA 25, terminals a0 and a1, cab heaters 52, cab AC, TFVT 55, resistors and capacitors C118 and R118 58, relay Q30, contactors UA1 and UA2, EM contactors 62, switches HVSI-1 and HVSI-2, and the cab 2 switch panel 66. If any abnormality is found, try to isolate the faulty equipment 11.

If no immediate abnormalities are found, attempt to reset the QOA relay target 69. If the target doesn't reset, check all EM contactors for any that might be welded. If a welded contactor is found, try to separate its contacts, reset the relay, and if QOA resets, isolate the auxiliary motor controlled by that contactor 69. If the EM contactors are normal, try switching off BLRA in both cabs, removing fuses or circuit breakers for CCRA1&2, CCVT & CCSPM, and isolating the cab AC (if present). Then try to reset the QOA relay 69. If still unsuccessful, place switches HPH, HVSL-1, HVSL-2, HVSI-1, HVSI-2, and HCHBA in the '0' (OFF) position and attempt to reset the relay target 69. If QOA resets after any of these steps, normalize the switches one by one. If QOA trips after normalizing a switch, isolate the corresponding equipment and normalize other switches 69. If QOA does not reset, normalize all switches, place the HQOA switch in the '0' (OFF) position, and resume traction with caution 69. If QOA doesn't reset even with HQOA on '0', also place the HOBA switch in the OFF position and reset 69. After keeping HQOA in '0', depute an Assistant Loco Pilot (ALP) to observe the corridor for 5 minutes after closing the DJ and starting the auxiliaries. The Loco Pilot should watch for abnormalities in EM contactors and the switchboard (if driving from cab 2). Report the matter to TLC and log the event 69.

Remember: Do not use rheostatic braking if QOA drops during that process 32. Rheostatic braking is a type of dynamic braking 36. A QOA trip indicates a fault in the auxiliary system, and using rheostatic braking might worsen the fault.

If QOA continues to drop even after placing HQOA in the '0' position and then HOBA in the OFF position, do not continue to reset the relay 69. Immediately contact TLC for further instructions 69.

QLA Drops: Investigating Auxiliary Power Circuit Issues

The QLA relay protects the auxiliary power circuit 14. A trip indicates a fault within this system.

Upon a QLA trip, check the auxiliary power circuit equipment for any smoke, burning smell, or fire. This includes the ARNO converter, all auxiliary motors, CHBA, the cab 2 contactors panel 70, and the switch panel 66 11. If any abnormality is noticed, isolate the affected equipment and try to resume traction 14. If no abnormality is found, reset the relay target, close the DJ, and resume traction 14.

Conduct a thorough inspection of all components in the auxiliary power circuit. If QLA trips a second time, do not reset the relay target 14. Immediately contact TLC for further instructions 14. Note that QLA may also trip along with QOA or QLM 11.

General Procedures for Repeated Trips: A Word of Caution

It is crucial to understand that repeatedly resetting a safety relay without identifying and rectifying the underlying cause is not only ineffective but can also be dangerous. Repeated tripping indicates a persistent fault that could worsen over time, leading to significant equipment damage or creating serious safety hazards for personnel. The troubleshooting procedures specific to each relay clearly outline when it is appropriate to attempt a reset and, more importantly, when to cease these attempts and seek expert assistance from TLC or qualified maintenance personnel. Ignoring these guidelines or attempting to override the safety system by continuously resetting a tripping relay is a severe safety violation that could have dire consequences. Always prioritize a thorough investigation and proper fault diagnosis over repeated, futile reset attempts.

Conclusion: Ensuring Safety and Efficiency in Railway Operations

Safety relays are indispensable components in the complex electrical systems of railway locomotives, playing a vital role in safeguarding both personnel and equipment. A comprehensive understanding of these protective devices and the correct procedures to follow when a relay trip occurs is essential for all railway operators and maintenance technicians. By adhering to the guidelines outlined in this guide, prioritizing safety in every action, and promptly reporting any persistent or unusual relay trips to the appropriate authorities, railway personnel can significantly contribute to maintaining the safety and efficiency that are paramount in railway operations.

Key or Valuable Tables:

1. Table: Safety Relay Troubleshooting Checklist

Relay Name	Function	Initial Checks	Subsequent Steps	Specific Instructions	Repeated Trips
QLM	Main Transformer Overload Protection	HT-2 compartment (smoke, smell, fire), oil trap, oil splashes from GR/TFR, TFR/GR oil levels, CGR arc chutes, TFR terminals, roof bushing bars, RCAPTFWA/CAPTWA panels, RGR, RPGR, A34 bushings	Reset target clockwise once, resume traction	Inspect TFP/GR for oil issues	Do not reset after second trip, contact TLC
QRSI-1 & 2	Silicon Rectifier & Traction Motor Overcurrent Protection	RSI-1/2, SL-1/2, CTF-1/2/3, L1-L6 J1/2, QD1/2, TM 1-6, U1-U6, A3/4, SJ (smoke, smell, flash/weld, abnormality)	Reset target, accelerate gradually, watch ammeters	Isolate defective TMs using HMCS	Reduce load significantly if tripping continues after HMCS isolation, contact TLC
QOP-1 & 2	Main Traction Circuit Earth Fault Protection	Traction power circuit (smoke, fire, abnormality), TM vent mesh (foreign bodies), (QOP-2 specific checks)	Reset target (if no major issue), clear block with HQOP OFF	Use HQOP to clear block, avoid dynamic braking	Place HOBA OFF if tripping continues with HQOP OFF, contact TLC
QOA	Auxiliary Equipment Earth Fault Protection	ARNO, auxiliary motors, CHBA, a0/a1 terminals, cab heaters/AC, TFVT, C118/R118, Q30, UA1/UA2, EM contactors, HVSI-1/2, cab 2 switch panel (smoke, smell, fire, high temperature)	Reset target (after checking EM contactors, BLRA, etc.), isolate faulty auxiliary with HQOA	Use HQOA to isolate auxiliary circuits, avoid rheostatic braking	Place HOBA OFF if tripping continues with HQOA OFF, contact TLC
QLA	Auxiliary Power Circuit Protection	ARNO, auxiliary motors, CHBA, cab 2 contactors panel, switch panel (smoke, smell, fire)	Reset target, close DJ, resume traction	Thoroughly check auxiliary power circuit	Do not reset after second trip, contact TLC

2. Table: Common Components in Railway Locomotive Electrical Systems (Related to Safety Relays)

Component Abbreviation	Full Name/Description	Relevance to Specific Relays
TFP	Traction Power Transformer	QLM
GR	Grid Resistor	QLM
TM	Traction Motor	QRSI, QOP
HMCS	Half Motor Cutout Switch	QRSI
HQOP	High Voltage QOP switch	QOP
ARNO	Alternating Rectifier No Output (Converter)	QOA, QLA
CHBA	Compressor Heater Blower Assembly	QOA, QLA
TFVT	Transformer for Fan Voltage	QOA
SL	Smoothing Reactor	QRSI, QOP
RSI	Silicon Rectifier	QRSI, QOP
CGR	Tap Changer Transition Contactor	QLM
RGR	Tap Changer Transition Resistor	QLM
EM Contactors	Electro-Magnetic Contactors	QOA
HQOA	High Voltage QOA switch	QOA
HOBA	High Voltage Busbar Auxiliary	QOP, QOA
DJ	Disjoncteur (Main Circuit Breaker)	QOP, QLM, QOA, QLA, QRSI
CTF	Current Transformer	QRSI, QOP
QD	Quick Drop (Isolation Device)	QRSI, QOP
SJ	Shunt (for current measurement)	QRSI, QOP
BLRA	Blower Relay Auxiliary Switch	QOA
CCRA/CCVT/CCSPM	Control Circuit Relays/Voltage Transformer/Surge Protection Module	QOA
HPH	High Pressure Hydraulic Switch	QOA
HVSL	High Voltage Smoothing Reactor Isolation Switch	QOA, QRSI
HVSI	High Voltage Silicon Rectifier Isolation Switch	QOA, QRSI
HCHBA	High Voltage Compressor Heater Blower Auxiliary Switch	QOA
UA	Undervoltage Auxiliary Contactor	QOA
Q30	No Voltage Relay	QOA
L	Likely Line Contactor	QRSI, QOP
CTFEX	Current Transformer for Excitation	QOP
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP
RC Damping	Resistance-Capacitance Damping Panel	QOP
HVMT	High Voltage Motor Traction Switch	QRSI
HOM	Hand Operated Mechanism	QOP
HBA	High Voltage Busbar	QOP
BLDJ	Circuit Breaker Control Switch	QLA, QLM, QOA, QOP, QRSI
BLRDJ	Circuit Breaker Reset Switch	QLA, QLM, QOA, QOP, QRSI
BLCP	Blower Compressor Switch	QOA
BLVMT	Blower Motor Traction Switch	QOA
MCP	Main Compressor Panel	QOA
C	Capacitor	QOP
R	Resistor	QOP
Q20	Traction Motor Overload Relay	QOP
C145	Capacitor (specific circuit)	QOP, QRSI
ATFEX	Auxiliary Transformer for Excitation	QOP