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Troubleshooting of VL85 electric locomotives

(End. Beginning see “Lokomotiv” No. 8, 2023)

S.M. KARPOV, teacher of the Abakan division of the Krasnoyarsk Training Center for Professional Qualifications

MALFUNCTIONS IN AUXILIARY MACHINERY CONTROL CIRCUIT

When the “Phase splitter” button is turned on, the phase shifters do not start on all sections. Check the position of the SF28 circuit breaker and the “PH” lamp on the alarm panel lights up. If the lamp does not light, then in block No. 12 power should be supplied from wire E80 (KV58 relay blocking) to wire E40 (KV46 relay blocking). The launch of the FR is controlled by the “Alarm” button.
When the “Phase splitter” button is turned on, the phase shifters do not start on one section. By switching the alarm toggle switches C1, C2 on the driver's console, use the summarizing alarm board to determine which section the malfunction occurred in.
Check that the “PH” lamp on the totalizing alarm panel lights up. If the lamp does not light, then in block No. 12, supply power from wire E80 (blocking relay KV58) to wire E40 (blocking relay KV46). The launch of the DF of the faulty section is controlled by the “Alarm” button.
If, after collecting the above emergency circuit, the FR does not start, then in block No. 4 on panel A15, check the blockages in wires E40-N239, and clear them if necessary (Fig. 19).
When the “Phase splitter” button is turned on, the SF28 circuit breaker is triggered. In block No. 11, forcefully turn on the KM20 contactor (Fig. 20). Start the MV4 fan motor. After starting MV4 in block No. 12 of each section, force relay KV45 to turn on. It should be remembered that the motor-venti
The MB4 lator for each auxiliary machine will serve as a phase splitter. When passing neutral inserts, all auxiliary machines must be turned off.
Motor fans 1 and 2 do not start in all sections. Check the position of the SF29 circuit breakers. At the locking switch SA5, apply power from wire E40 to wire E41. Enable the “Phase splitter” button. After starting the FR, the MV1 fan motor will start, then turn on the “Fan 1” and “Fan 2” buttons.


When the “Fan 1” or “Fan 2” buttons are turned on, the SF29 circuit breaker is turned off. Restore operation of circuit breaker SF29. Determine which button triggers the circuit breaker - “Fan 1” or “Fan 2”. Turn off the toggle switches of this fan on all sections of the control panel and turn on the common button on the driver’s console again. If the circuit breaker trips again after this, this indicates the presence of a short circuit in the common wire E41 (MV1) or E42 (MV2). Turn on the fan toggle switches on the ShchPR.
In all sections on the SA5 interlocking switch, insulate the interlocks in the wires: E41-N247 (for MV1) and E42-N251 (for MV2). From wire E40, supply power to wire H247 (for MV1) or H251 (for MV2). Fans MV1 or MV2, in whose circuit there was a short circuit, can be controlled using the “Phase splitter” button.
If the machine does not operate when the toggle switches on the control panel are turned off, then you need to turn on the toggle switches one by one and determine the faulty section. Further proceed taking into account the remaining TEDs in operation.
Fan motors 3 and 4 do not start in all sections. Check the position of the SF30 circuit breakers. At the locking switch SA5, apply power from wire E40 to wire E43. Enable the “Phase splitter” button. After starting the FR, the motor-fan of the cost center will start. Next, turn on the “Fan 3” and “Fan 4” buttons.
When the “Fan 3” or “Fan 4” buttons are turned on, the SF30 circuit breaker is turned off. Restore
operation of the SF30 circuit breaker. Determine which button triggers it - “Fan 3” or “Fan 4”. Turn off the toggle switches of this fan on all sections of the control panel and turn on the common button on the driver’s console again. If the SF30 circuit breaker trips, this indicates a short circuit in the common wire E43 (MVZ) or E44 (MV4). The switches on the ShchPR should be turned on. In all sections on the SA5 interlocking switch, isolate the interlocks in the wires: E43-N255 (for MVZ) or E44-N259 (for MV4). From wire E40, supply power to wire H255 (for MVZ) or H259 (for MV4). The fans MVZ or MV4, in whose circuit there was a short circuit, are controlled by the “Phase splitter” button.

If the machine does not operate when the toggle switches on the control panel are turned off, then you should turn on the toggle switches one by one and determine the faulty section. Further proceed taking into account the remaining TEDs in operation.
Compressors in all sections do not start when the pressure in the gas generator drops below 7.5 kgf/cm2 and the forced pumping button S9 “Compressor” is pressed. Check the position of the SF32 “Compressor” circuit breaker. If the circuit breaker does not trip, then in the corridor behind the assistant driver’s workplace in the cabinet on the terminal strip, supply power from wire E27 to wire E46. Control the compressors with the “Return protection” button or turn on the “Compressor” button in the rear control cabin.
The motor-compressor in one section does not start. On the control panel of the faulty section, check that the “Compressor” toggle switch is turned on. If the density of the train (electric locomotive) allows it to travel with one compressor, then proceed further in the usual order. If the density of the train (electric locomotive) does not allow it to travel with one compressor, it is necessary to restore the TRT thermal relay. If the TRT is in order, in the corridor behind the assistant driver’s workplace in the cabinet on the terminal strip, supply power from wire E27 to wire E46. The compressor of the faulty section is controlled by the “Return protection” button.
When the “Compressor” button is turned on, the SF32 circuit breaker is triggered. Restore the operation of the circuit breaker and turn off the S16 “Compressor” toggle switches on the control panel in all sections. Turn on the “Compressor” button on the driver’s console. If after this the SF32 circuit breaker does not work, then by alternately turning on the “Compressor” toggle switches S16 on the control panel, determine which section has the malfunction, and do not turn on the toggle switch there again (proceed further without one compressor). If, when the S16 toggle switches are turned off on the control panel and then turn on the “Compressor” button on the driver’s console, the SF32 circuit breaker trips, then the S16 toggle switches on the control panel should be left off.
Do not turn on the “Compressor” button on the driver’s console. On both sections in block No. 12, supply power from wire E128 (“plus” of the KV78 relay coil) to wire H269 (blocking relay KV45). The operation of the compressor in this section is controlled using the “Cart Lighting” toggle switch. In this case, you should constantly monitor the operation of the compressors, since in this emergency circuit the thermal relays of the motor-compressor are disabled!
FAULTS IN THE CIRCUITS OF HIGH-SPEED SWITCHES (HS)
The WB holding coils do not receive power in all sections. A malfunction in the circuit of the WB holding coils is checked by pressing the “Return protection” button or by pressing the armature of the KV41 relay. In this case, the magnetic system should rise up, and when the button or relay armature is released, it should fall down, dragging the WB armature and the contact lever with it. If the armature and contact lever do not lower, this means that the WB holding coil is not receiving power.
In block No. 12, check the activation of relay KV23, paying attention to the activation of relays KV21 and KV22 (Fig. 21). If the relays are turned off, then in the head section circuit breaker block, check the position of the SF24 “Switches” circuit breaker.
If the SF24 “Switches” circuit breaker is turned on, but there is no relay, power should be supplied from wire H024 to wire E20 of the KV42 relay interlocks.
The WB holding coils in one section do not receive power. By switching the alarm toggle switches Cl, C2 on the driver's console, use the summarizing alarm board to determine which section the malfunction occurred in. In block No. 12, check the activation of relays KV21 - KV23 and KV40. If the KV40 relay is not turned on, you must force it to turn on. Proceed further without using full load; using electric braking is prohibited!
If relays KV21 and KV22 are turned on, but KV23 is not (or vice versa), power should be supplied from the “plus” of one coil to the “plus” of the other (wire E20).
The WB holding coils on one group do not receive power. By switching the alarm toggle switches C1, C2 on the driver's console, use the summarizing alarm board to determine which section the malfunction occurred in. In block No. 12, on the KV23 relay interlocks, combine wires H175-H182-H189.
The WB holding coil of one group does not receive power. By switching the alarm toggle switches C1, C2 on the driver's console, use the summarizing alarm board to determine which section the malfunction occurred in. Observing safety requirements, enter the high-voltage chamber and inspect the space between the electromagnet and the armature of the faulty VB for the presence of foreign objects (Fig. 22). The electromagnet should be wiped with a dry cloth. If after this the magnetic system of the WB is not held, you should check the “negative” wire of the holding coil. If everything is normal, it is necessary to supply power from the “plus” of the holding coil of one WB to the “plus” of the other.
When the hot water supply is turned on and the “Protection Return” button is pressed, the turning on coils of the hot water generator in all sections do not receive power. In the circuit breaker block, check the position of the “Return protection” circuit breaker. When the “Return protection” button is pressed in block No. 12, check that the KV43 relay is turned on. If the relay does not turn on, then briefly (for 2 - 3 s) press the KV43 relay armature on each section.
The WB switching coils in one section do not receive power. By switching the alarm toggle switches C1, C2 on the driver's console, use the summarizing alarm board to determine which section the malfunction occurred in. In block No. 4, check fuse F37 (Fig. 23) and, if necessary, replace it (can be replaced with fuse F36). If fuse F37 subsequently burns out again, proceed in the manner described below in the section “Procedure for action when fuse insert F37 burns out.”
PROCEDURE IN THE EVENT OF FUSE INSERT F37 BURNS
It is important to remember that if the fuse insert F37 on the faulty section of the electric locomotive burns out, the VB will turn off and will not turn on; when the fans are running, the MN lamp on the alarm unit will not go out. Before eliminating this malfunction, a strict sequence of actions is required, which are described below. It is helpful to have a 25 amp circuit breaker with clamps on the ends of the wires. If there is none, then you can use the following method:
> do not restore insert F37;
> in block No. 12, supply power from wire E80 (blocking relay KV58) to wire H017 (blocking relay KV41);
> on the driver’s console, turn on the “Alarm” button.
The short circuit for each position is determined by the operation of the SF34 “Alarm” circuit breaker.
Fuse F37 blows when the switches on the switchboard are turned on. By switching the alarm toggle switches C1, C2 on the driver's console, use the summarizing alarm board to determine which section the malfunction occurred in. On the faulty section, turn off the control switch SA1 on the power supply unit, replace the fuse in block No. 4 or power up as described above. On the ShchPR, turn off the “Oil pump” toggle switch. On the power supply, turn on the control switch SA1. If F37 burns out (the SF34 “Alarm” circuit breaker is triggered when the SA1 control switch is turned on), then do not restore the fuse (circuit breaker).
In block No. 12 on the KV10 relay, isolate the blockages in wires H151-H152 and apply power to wire H152 from wire H12 (“plus” of the coil). Next, in the same block, forcibly turn off the KV40 relay, combine the interlocks in wires H172-H179-H186 and apply power from wire H216 (“plus” of the relay coil) to any of the above combined wires.
To turn on the VB, briefly (for 2 - 3 s) apply power from wire E26 to wire H192 of the KV41 relay blocking.

Fuse F37 blows when the “Protection Return” button is pressed. Replace fuse F37 or power the circuit from the SF34 “Alarm” circuit breaker as described above. In block No. 12, in the blocking relay KV41 of the faulty section, put insulation in wires H017-H192 and turn on the hot water supply. If fuse insert F37 burns out ( circuit breaker SF34 “Alarm” is triggered), this indicates a short circuit in the circuit of the WB holding coils.
Replace fuse insert F37 (restore circuit breaker SF34). In block No. 12, forcibly turn off the KV40 relay and turn on the hot water in the prescribed manner. When the “Alarm” button is turned on, supply power from wire E80 (KV58 relay blocking) (touch wires) H172, H179, H186 (KV40 relay blocking). A short circuit will indicate the operation of the SF34 “Alarm” circuit breaker: wire H172 - the first group of electric motors; wire N179 - second group of TED; wire N186 - third group of TED. In this case, the KV40 relay should be unblocked, and in the circuit where there is a short circuit, insulation should be placed between wires H171-H172 (first group of electric motors); N178-N179 (second group of TED); N185-N186 (third group of TED). Then follow the usual procedure without one group of TED.
If, during the described actions, the fuse insert F37 does not burn out (the SF34 “Alarm” circuit breaker does not work), this indicates a short circuit in the circuit of the WB switching coils. In this case, the insulation from the KV41 relay should be removed, and insulation should be placed in the own blocking units QF1-QF2 of each group. By pressing the armature of the KV41 relay in the faulty section and alternately removing the insulation from the interlocks of the WB, determine in which coil the short circuit occurred by blowing out the fuse insert F37 (the tripping of the SF34 circuit breaker). Leave the insulation on the faulty VB, restore fuse F37 and proceed further, taking into account the remaining TEDs in operation.
Fuse F37 burns out when the controller steering wheel is moved to the “P” position. Restore the fuse insert. Turn on fans 1 - 3 one by one and set the steering wheel to the “P” position, determine which contactor circuit has a short circuit. If the insert burns out (automatic switch SF34 “Alarm” is triggered) with one fan turned on, then this indicates the presence of a short circuit in this group in the circuit of contactors KM41 - KM43. After determining a short circuit in block No. 12, the KV22 relay locks should be isolated in wires H158-H159 (for KM41); N162-N163 (for KM42); N166-N167 (for KM43). Continue further taking into account the weight of the train.

MALFUNCTIONS IN THE TRACTION MODE CONTROL CIRCUIT
When the steering wheel of the driver's controller is set to the "P" position, the VIP lamp does not go out, and after setting it to "NR", the VIP lamp is turned off in all sections. Check that the EPC is turned on and the disconnect valves to it are opened, the automatic switch SF25 “Traction” is turned on, and the brakes are charged. In block No. 12 (Fig. 24) of the head section, check the position of relays KV13 (should be turned on; if it is turned off, turn it on forcibly), KV12, KV14 (should be turned off, if turned on, turn it off forcibly). In the pneumatics unit, check the activation of the pneumatic control switch SP4 (Fig. 25), the condition of its contact elements and the compressed air supply (if SP4 is faulty or disconnected, wires H32-H33 should be bypassed). If there are no comments on the operation of the above devices in block No. 12, power should be supplied from wire H20 (KV14 relay blocking) to wire E6 (KV12 relay blocking). When assembling such an emergency circuit, it is necessary to control the activation of the EPC and the brake line of the train!

When the steering wheel of the driver's controller is set to the "P" position, the VIP lamp does not go out, and after setting it to "NR", the VB in one section is turned off. When collecting the emergency circuits described below, it is strictly forbidden to collect the electric braking circuit!
By switching the alarm toggle switches C1, C2 on the driver's console, use the summarizing alarm board to determine which section the malfunction occurred in. With the MV running and the EPC turned on, set the controller's steering wheel to the “P” position. In block No. 12 of the faulty section, visually check the position of relays KV10, KV15, KV90 (Fig. 26) - they should be turned on. If KTZ is turned on, you should check the position of the brake switches. If the brake switches are set to traction mode, the relay must be forcibly turned off.
If the KV10 relay is not turned on, you should check the position of the reversing switches and the activation of the KV90 relay.
If relays KV10, KV15, KV90, brake and reversing switches are turned on in the correct position, relay KT5 should be forcibly turned on (Fig. 27).
When the steering wheel of the driver's controller is set to the "P" position, the VIP lamp does not go out, and after setting it to "NR", the VB of one group in one section is turned off. By switching the alarm toggle switches C1, C2 on the driver's console, use the summarizing alarm board to determine which section the malfunction occurred in. On the faulty section in block No. 12, clear the KV22 relay locks in wires H158-H159 (first group), H162-H163 (second group), H166-H167 (third group).
If contactors KM41, KM42, KM43 do not turn on, then in block No. 4 check the position of the contactor insulating rods and clear the blockages.

When the steering wheel of the driver's controller is set to the "P" position, the VIP lamp goes out, and after setting it to "NR", the VBs are turned off on one group of electric motors, one section. By switching the alarm toggle switches O, C2 on the driver's console, use the summarizing alarm board to determine which section the malfunction occurred in. In block No. 12 of the faulty section on the KV22 relay, bypass the blocking in wires H158-H159 (first group), H162-H163 (second group), H166-H167 (third group).
The SF25 “Traction” circuit breaker is triggered. In all cases of collecting emergency circuits when the SF25 circuit breaker is tripped, it is necessary to ensure that the reversing and braking switches are in the correct position. The use of electric brakes is prohibited!
The SF25 circuit breaker must be restored. If this circuit breaker trips again, in block No. 12 of both sections it is necessary to forcibly turn on the KV15 relay.
Circuit breaker SF24 “Switches” is switched off. It should be remembered that when the SF24 circuit breaker is triggered, the “Switches” will turn off the VB in all sections, and when you press the “Protection Return” button, they will not be kept in the on state.



On the driver’s console, turn off the “Control unit” toggle switch. Restore the operation of the SF24 circuit breaker and switch to another control unit (if SF24 does not work, then proceed further on this unit). In the case when the SF24 circuit breaker also trips on another block, then in the first or sixth compartment it is necessary to forcibly turn on the SA1 locking switch. In this case, it is necessary to remove the “positive” wire E15 (E16) from the valve and in its place apply power from wire E80 of the SA5 locking switch. To turn on the SA1 switch, you must turn on the “Alarm” button, turn off the “Control Unit” toggle switch and restore the operation of the SF24 circuit breaker. Continue further as usual.

AUTOMATION CIRCUIT

When assembling the traction diagram, there is no load on all traction motors in all sections. The fault alarm does not show. Go to another control unit and check the load (if there is a load, then proceed further on the working unit). When following “Manual regulation”, switch to “Auto regulation” (and vice versa). If there is no load, then by placing the driver’s control wheel in the control zone, you should check the “buzz” of the synchronizer. If there is no “humming”, check that the blocking switch SA1 is turned on (if it is not turned on, then power must be supplied to the valve from wire E80 blocking the blocking switch SA5 to the “positive wire” E15 (E16) of the SA1 valve coil). To turn on the SA1 switch, turn on the “Alarm” button.

If the interlock switch SA1 is turned on, then the fuse insert F45 in block No. 4 or No. 11 must be replaced. If the fuse insert is intact, it is necessary to bypass the interlocks in wires A23-A27 in the driver’s controller.
If, when placing the steering wheel in the control zone, you can hear the “buzz” of the synchronizer, then in block No. 4 you should check the integrity of the fuse inserts F40 (Fig. 28) on each section of the electric locomotive (it is possible that one of the inserts burned out earlier).


If there is no result when performing all of the above measures, try to turn off the hot water in this section, de-energize the control circuits, turn off the battery and after a while restart the electric locomotive.
When assembling the traction diagram, there is no load on all traction motors in one section. The fault alarm does not show. If the weight of the train allows you to continue moving on one section, proceed further, taking into account the remaining traction motors in operation. When the weight of the train does not allow it to proceed further, then in block No. 4 it is necessary to replace the fuse insert F17 (see Fig. 28).
There is no load on two APs of the same group. The fault alarm does not show. If the weight of the train allows the continuation
press the movement without one group of traction motors, proceed further, taking into account the traction motors remaining in operation. In the case when the weight of the train does not allow it to continue moving, in block No. 4 it is necessary to check the fit of the power contacts of the contactors KM41, KM42, KM43 (Fig. 29). If no comments are found, the VIP power supply of this group is most likely faulty. On the faulty group in the VIP power supply, check the integrity of the fuse inserts (Fig. 30). If necessary, replace burnt inserts.

PROCEDURE FOR LIFTING THE CURRENT COLLECTOR FROM THE AUXILIARY COMPRESSOR

Before lifting the pantograph from the auxiliary compressor, it is necessary to disconnect all unnecessary consumers of electrical and pneumatic circuits.
In the pneumatic block, the isolation valves KN7, KN8, KN24, KN25 should be closed. On the section where the pantograph will rise or on the section where there is a pantograph compressor, in block No. 12, force relay KV44 to turn on. Turn on the switches for the battery and control circuits, and the toggle switch for the pantograph compressor (Fig. 31). After the compressed air pressure in the hot water tank reaches more than 6 kgf/cm2, raise the pantograph in the established order, turn on the hot water and the compressor. After reaching full pressure in the main tanks, open taps KN7, KN8, KN24, KN25 and turn off the toggle switch for turning on the pantograph compressor.

ORDER OF TURNING ON GW MANUALLY

When working in a high-voltage chamber, you must strictly follow safety precautions! It is prohibited to turn on the hot water when the protection in the power and auxiliary circuits, as well as in the electric brake circuits, is triggered.
It should be remembered that turning on the hot water manually when there is air in the hot water tank is a last resort. This emergency scheme is recommended in order to quickly clear the stage. With such an emergency circuit, protection KA1 - KA9 remains in operation. Electric brakes must not be used!

It is necessary to close the isolation valves to the pantograph valves (Fig. 32) and ground the main input of the traction transformer according to the established procedure. In block No. 12, forcefully turn on the KV44 relay and turn on the “Main switch” button on the driver’s console. Observing personal safety requirements, use the OD rod to press the valve of the hot water switching coil (Fig. 33). Remove the grounding of the traction transformer output, open the isolation valves to the pantograph valves. If the malfunction is not related to a short circuit in the hot water circuit, proceed as usual.

Admin добавил 10.12.2023 в 17:44

Troubleshooting of VL85 electric locomotives

S.M. KARPOV, teacher of the Abakan division of the Krasnoyarsk Training Center for Professional Qualifications

The article discusses the most likely malfunctions in the electrical circuits of VL85 AC electric locomotives that occur along the route. According to the requirements of the regulatory documents of JSC Russian Railways, the locomotive crew, when a malfunction is detected on a locomotive or as part of a train, is obliged to take all necessary measures to eliminate it as quickly as possible, and if it is impossible to eliminate it in the prescribed time, to vacate the section, preventing disruption of the train schedule.
The troubleshooting methods recommended by the author are based on personal experience as a driver-instructor of locomotive crews, taking into account the analysis of errors made by locomotive crews when troubleshooting faults in the electrical control circuits of an electric locomotive, and traffic safety requirements. Photographs accompanying the given faults in the electrical circuits of an electric locomotive provide the best perception of the educational material and contribute to the development of quick actions by locomotive crews when an unusual situation arises.

BATTERY CIRCUIT FAULTS

On the BP-6 power supply, fuse inserts F1 or F2 burn out. It should be remembered that if the battery fails (fuse F1 or F2 blows) of the head section on the neutral insert, the pantograph will lower and the hot water supply will turn off, the safety devices will lose power and auto-stop braking will occur. If fuse F1 or F2 blows on the slave section, the VB of this section will turn off.


The blown fuse must be replaced. For some time it is possible to install a wire with clamps at the ends, taking into account its cross-section. If the fuse blows again, you should switch to the emergency circuit, for which you need to set switch SA2 to the middle position, and SA1 to the lower “Emergency” position (Fig. 1).
The 3B lamp on the summarizing alarm board lights up. No battery charging. By switching the alarm toggle switches C1, C2 on the driver's console using the summarizing alarm board (Fig. 2), determine in which section the malfunction occurred.
Check the integrity of the fuse insert F3 by ear by turning on and off the “Power supply switch on” toggle switch (Fig. 3). If the insert is intact, then the KM5 contactor should be turned on and off.
If the KM5 contactor is triggered when the “Enable power supply” toggle switch is switched, then in block No. 4 you should check the integrity of the fuse insert F15 (Fig. 4).
If fuses F3 on the power supply, F15 in block No. 4 blow out, switch to the emergency circuit. Switch the control switch SA1 to the “Emergency” position.

CONTROL CIRCUITS FOR CURRENT COLLECTORS

Both pantographs do not rise. Check the operation of the SF21 pantograph and, if necessary, restore its operation.

Check the presence of voltage on the battery, if necessary, switch to the emergency circuit (switch the control switch SA1 to the lower “Emergency” position).
Check the air pressure in the control circuits and replenish it if necessary (Fig. 5).
Check the output of the VVK curtain blocking rods (Fig. 6), the activation of the SP5 PVU and the integrity of its contact elements (Fig. 7), the activation of the KV44 relay on all sections (Fig. 8). If the KV44 relays are not enabled, they must be forced to be enabled.
If the electric locomotive is accepted into the depot, then in the BSA of all sections it is necessary to check the position of the RShK QS3 switches (they must be turned off, Fig. 9).
The VVK blocking rods did not come out on one section. Lock the VVK on this section mechanically using fork keys and turn on the SQ5 device with them. In block No. 12, check that the KV44 relay is turned on (the pantograph will not rise in this section).
The VVK blocking rods have come out everywhere, but the pantographs do not rise. In block No. 12, check that the KV44 relay is turned on. If the KV44 relays are not turned on, then in the section where the pantograph will be raised, the KV44 relay should be supplied with power from wire H202 (relay blocking) to wire E36 (“plus” of the coil of this relay) or on the terminal strip of this relay. Raising and lowering the pantograph should be done from the “Main switch” button.
SF21 is triggered when the “VVK Blocking” button is turned on. It should be remembered that the main point of short circuit in the circuit of wire E28 is the circuit to the unloading valve of the compressor U5 (Fig. 10), therefore, when this malfunction occurs, it is necessary to inspect the supply wires to this valve.
It is enough to forcefully turn on one protection valve U1 in the section where it is necessary to raise the pantograph (Fig. 11).


In block No. 12, on relay KV44 of the front or rear section (depending on which pantograph is planned to be raised), apply power from wire H202 (relay blocking) to wires H236 (relay blocking) and E36 (“plus” relay coils) or to the terminal strip relay KV44.
Do not turn on all pantograph buttons! Turn on the "Main switch" button. After lifting the pantograph, turn on the hot water supply by pressing the “Return protection” button.
The SF21 circuit breaker is triggered when the “Pantograph C1 or C2” button is turned on. If the “Pantograph C2” button was turned on, then after restoring the circuit breaker, the “Pantograph C1” button should be turned on, and vice versa.
If SF21 is triggered again, then in block No. 12 the KV44 relay should be forcibly turned on in all sections.
In the section where it is necessary to raise the pantograph, in block No. 12 on the KV44 relay, before turning it on forcibly, it is necessary to isolate the interlocks in wires E29-N236 and on the same relay apply power from wire H202 to wire H236. Restore operation of the SF21 circuit breaker.
Enable the “Block VVC” button. Do not turn on the “Pantograph C1 and C2” buttons! Turn on the "Main switch" button. After lifting the pantograph, turn on the hot water supply by pressing the “Return protection” button. In this case, the pantograph should be controlled by the “Main switch” button.

MAIN SWITCH CONTROL CIRCUIT

The hot water is not turned on in all sections. The voltage on the battery and the pressure in the hot water tank are normal. It should be remembered that before turning on the hot water, you must first make sure that the key of the locking device No. 367 is inserted and turned down, the “Section Disabling” toggle switches S61, S62 are turned on (on position is up), check the position of the driver’s controller steering wheel in “O” or “P”, check the raising of the pantograph, the operation of circuit breakers SF22 “Main switch”, SF23 “Return protection”, SF24 “Switches”.
Open the door and check by ear whether the KV43 relay in block No. 12 turns on from the “Return protection” button. If relay KV43 turns on, but the hot water does not, then in the same block of the head section, visually check that relay KV42 is turned on (Fig. 12). If this relay is not turned on, you should turn it on forcibly. This malfunction occurs due to a malfunction of the contact elements of the brake lock SQ1 No. 367 and, as a rule, appears when changing the control cabin.
If the KV42 relay is turned on and when you press the “Reset protection” button, the KV43 relay turns on, but the main water supply does not, you need to check the inclusion of relays KV21, KV22, KV23. If these relays are not turned on, power should be supplied from wire H024 to wire E20 for blocking the KV42 relay. With this emergency scheme, there will be no control of the zero position of the driver’s controller steering wheel!

If relays KV42, KV21, KV22, KV23 are turned on and when you press the “Return protection” button, relay KV43 is turned on, but there is no hot water, you should apply power from wire E80 (blocking relay KV58) to wire H202 (blocking relay KV43, Fig. 13) . In this case, the “Main switch” button will not function. The role of this button will be performed by the “Alarm” button.
If, when you press the “Return protection” button, the KV43 relay does not turn on, then press the armature of this relay for 2 - 3 seconds in each section. To remotely turn on the hot water from the control cabin, you can supply power from wire E128 (“plus” of the KV78 relay coil) to wire E27 (“plus” of the KV43 relay coil). When turning on the hot water, control the “Cart Lighting” toggle switch, turning it on for 2 - 3 s. In this emergency circuit, do not use the “Trolley Lighting” toggle switch for its intended purpose!


The hot water in the head section does not turn on. The voltage on the battery is normal (50 - 60 V), the pressure in the hot water tank is normal (more than 6 kgf/cm2). If the train’s weight and weather conditions allow it to travel in one section, it is necessary to turn off the head section using the “Section Off” toggle switch S61 on the assistant driver’s console and turn on the main section of the rear section in the established order. Switch the control unit to a serviceable section, switch the control switch SA1 to the “Emergency” position.
Check the position of the “Section off” toggle switch S61 (on position – up). In block No. 12, check the switched position of relay KV21, paying attention to relays KV22, KV23. If these relays are not turned on, you should apply power from wire H024 to wire E20 for blocking the KV42 relay or force these relays to turn on. With such an emergency scheme, there is no control of the zero position of the driver's controller steering wheel!
When the “Main switch” button is turned on in block No. 12 of the faulty section, briefly (for 2 - 3 s) press the armature of the KV43 relay. If the hot water supply does not turn on, then in block No. 12 you need to briefly (for 2 - 3 s) supply power from wire H017 (blocking relay KV41) to wire H219 (blocking relay KV41). If the hot water supply turns on, then in block No. 12 to turn on the hot water bank you need to briefly (for 2 - 3 s) press the armature of the KV41 relay.
If the hot water does not turn on, then it is necessary to check the locking of the minimum pressure switch (AMD), observing the safety requirements (Fig. 14). When inspecting the AMD, pay attention to the failure of the upper blocking contacts. If necessary, bridge the upper contacts.
The hot water in the rear section does not turn on. The voltage on the battery is normal (50 - 60 V), the pressure in the hot water tank is normal (more than 6 kgf/cm2). Check the position of the toggle switch S62 “Section off” (on position - up). With the “Main switch” button on the driver’s console in block No. 12 of the head section, press the armature of the KV41 relay and check whether the KV32 relay turns on. If the relay does not turn on, you should force it to turn on. In this case, it is necessary to turn on the hot water one at a time using toggle switches 561,562 “Disconnecting the section”.


In block No. 12, check the switched position of relay KV21, paying attention to relays KV22, KV23. If these relays are not turned on, you should supply power from wire H024 to wire E20 of the KV42 relay locks or turn them on forcibly. With this emergency scheme, there is no control of the zero position of the driver's controller steering wheel!
When the “Main switch” button is turned on in block No. 12 of the faulty section, briefly (for 2 - 3 s) press the armature of the KV43 relay. If the hot water supply does not turn on, then in block No. 12 you need to briefly (for 2 - 3 s) supply power from wire H017 (blocking relay KV41) to wire H219 (blocking relay KV41). If the hot water supply turns on, then in block No. 12 to turn on the hot water bank you need to briefly (for 2 - 3 s) press the armature of the KV41 relay.
If the hot water does not turn on, then it is necessary to check the AMD (minimum pressure automatic) locks, observing safety requirements. When inspecting the AMD, pay attention to the failure of the upper blocking contacts. If necessary, bridge the upper contacts.
The hot water switches on and immediately switches off in one of the sections due to a malfunction in the high-voltage circuit (KA1 - KA9, KA12, KA15, RZ, RMT). It should be remembered that the reason for turning off the hot water supply can be either the activation of the protection or the lack of power to the hot water holding coil. To determine the reason for the hot water shutdown, you need to turn off the tap to the front pantograph and turn on its button. Then you should turn on the hot water supply and open the isolation valve of the current collector. If, after the pantograph touches the contact wire, the hot water switches off, this indicates that the protection has tripped. In this case, it is necessary to remove the required unit from operation by switching switches approved by the electric locomotive operating manual.
By switching the alarm toggle switches C1, C2 on the control panel using the alarm summarizing board, determine in which section the malfunction occurred and its nature.
You should check the operation of alarms (blinkers) on the spacecraft current relays, since these relays can mechanically jam and turn it off when the hot water is turned on. It is imperative to restore these relays. If the relay is not restored by pressing the blinker, then this relay must be struck with a light blow of a hammer.

If, after restoring the alarms, relays KA1 - KAZ are triggered again, it is necessary to turn off the VIP switch QS11 of the first power group (located in the third compartment above the VIP disconnect switch, Fig. 15). Further proceed taking into account the traction motors (TEM) remaining in operation.
If relays KA4 - KA6 are triggered, it is necessary to turn off the VIP switch QS12 of the second power group (located in the sixth compartment above the VIP disconnect switch). Further proceed taking into account the remaining TEDs in operation.
When the KA7 - KA9 relay is triggered, you should turn off the VIP switch QS13 of the third power group (located in the ninth compartment above the VIP shutdown switch) and proceed further, taking into account the TEDs remaining in operation.
If the KA 12 relay is triggered, it is necessary to turn off the VUV Q1 switch (located in the sixth compartment, Fig. 16). If the relay operates again, you should turn off the faulty section using the corresponding “Section Off” toggle switch S61, S62. Switch switch SA1 on the control panel to the “Emergency” position.
If the KA15 relay is triggered on a faulty section, it is necessary to turn off all consumers (furnaces, air heaters, power supply, etc.). If the hot water switches off when starting any auxiliary machine, then on the ShchPR it is necessary to turn off the corresponding toggle switch and proceed further, taking into account the remaining TEDs in operation.

If the KA15 relay is triggered again, it is necessary to turn off the faulty section at the assistant driver’s console and proceed further, taking into account the remaining traction motors in operation. On the faulty section, set the control switch SA1 on the control panel to the lower “Emergency” position.
When the KV5 protection relay (Fig. 17) is triggered, when the driver’s controller wheel is set to the “P” position and then by turning off the QS4 switches one by one (on blocks A11, A12, A13), find the faulty unit. In a faulty unit, determine the faulty electric motor by turning off switches QS1, QS2 (in this case, switch QS4 should be turned on).
If, when the switches QS1 and QS2 are disconnected, the protection relay KV5 continues to operate, you should turn off the switch QS4 and the VIP of the faulty unit (with the VIP switch QS11, QS12 or QS13). Further proceed taking into account the remaining TEDs in operation.
If the KV5 protection relay is triggered while moving (in any regulation zone), then the “ground” can be determined by turning off fans 1 - 3 on the control panel one by one. If a malfunction is detected, proceed further, taking into account the remaining TEDs in operation.
If, when the QS4 knives are turned off on the BSA of the first, second and third groups, when the controller steering wheel is set to the “P” position, the KV5 protection relay continues to operate, this indicates a false operation. It appears when there is increased voltage or surges in the control circuits above 60 V. In case of false operation of the KV5 relay, you should switch to the emergency circuit, for which you need to set the switch SA1 on the control panel to the lower “Emergency” position.
The operation of the maximum current relay (RMT) cannot be confused with anything else. In this case, the traction transformer will “hum” very loudly and after that the hot water supply will turn off. This will create a hydrogen sulfide smell (rotten egg smell) in the engine room.
The hot water turns on and immediately turns off in one section due to a lack of power in the holding coil circuit. In order to quickly determine what the hot water is switching off from, you need to turn off the tap to the front pantograph and turn on its button. Then turn on the hot water. If the hot water turns on and immediately turns off, this indicates a malfunction in the low-voltage circuit of the hot water holding coil.


You should check the operation of the signaling devices (blinkers) KA12, KA15. If triggered, these relays can mechanically jam and thereby break the circuit to the hot water holding coil. It is imperative to restore these relays. If the relay is not restored by pressing the blinker, then this relay must be hit with a light blow of a hammer until the blinker is restored, and, if necessary, the contacts must be bypassed. By switching the alarm toggle switches C1, C2 on the driver's console, use the summarizing alarm board to determine which section the malfunction occurred in.
If the weight of the train allows it to continue, then the faulty section must be turned off using the corresponding “Section Off” toggle switch S61, S62. Switch the control switch SA1 on the control panel to the “Emergency” position.
If the weight of the train does not allow it to proceed further, then the “Alarm” button on the driver’s console must be turned on. On the terminal strip of block No. 4 (end of the block), apply power from wire H410 to wire H214. If there is no spark when touching the wires from H410 to H214, this indicates the absence of a circuit. The RMT locks should be checked (Fig. 18). If the indicated interlocks are in order, this indicates a malfunction of the hot water holding coil.
When the “Main switch” button is turned on, the SF22 circuit breaker is triggered. Determine the faulty section by turning off all the “Section Disabling” toggle switches S61, S62 on the assistant driver’s console. If, when the toggle switches are turned off and the “Main switch” button is turned on again, the SF22 circuit breaker is triggered, then do not turn on the “Main switch” button. All “Section Disable” toggle switches S61, S62 should be turned on. All SA5 interlock switches must be insulated with E26-N202 interlocks. On each section, supply power from wire E80 to wire H202. Take wire E80 from the same SA5.
In block No. 12 in the head section, force relays KV32 and KV42 to turn on. Turn on the “Alarm” button on the driver’s console and press the “Return protection” button.
If, when the “Main switch” button is turned on, the SF22 circuit breaker trips after turning on the “Section Off” toggle switch S61, S62 of one of the sections, this indicates the presence of a short circuit in the circuit of the hot water holding coil of this section. If the track profile and train weight allow, then do not include this section. Switch switch SA1 on the power supply to the “Emergency” position.

When the “Protection Reset” button is turned on, the SF23 circuit breaker is triggered. To determine where exactly the short circuit occurred, you need to check the circuit breaker for operation when the “Main switch” button is turned on by alternately forcibly pressing the KV43 of all sections.
If, when you press the KV43 relay of one of the sections, the circuit breaker trips, this indicates the presence of a short circuit in the circuit of the hot water switching coil of this section. In the case when the profile of the track and the weight of the train allow it to proceed further, the faulty section must be turned off using the appropriate toggle switch on the assistant driver’s console. In this case, switch SA1 on the power supply unit of the faulty section must be switched to the “Emergency” position.

If, when all KV43 relays are pressed forcibly, the SF23 circuit breaker does not operate, then, using the exclusion principle, it is necessary to determine where the short circuit occurred - in wire E27 or in the coil of the KV43 relay of the faulty section. In this case, do not turn on the “Return protection” button. Turn on the hot water by forcibly pressing the KV43 relay of each section.
(End to follow)

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