FUNDAMENTALS OF ELECTRICITY  

SL NO CODE ABBREVIATION 1 A AUXILIARIES CIRCUIT 2 C CONTACTOR 3 H OR Z SWITCH H FOR ISOLATING, SWITCH Z FOR SELECTING 4 L LINE CONTRACTOR 5 Q RELAY 6 R RESISTANCE 7 J REVERSOR 8 S SHUNTING CONTACTOR 9 V VENTILATOR / BLOWER 10 CC FUSE 11 LS SIGNAL LAMP 12 BP PUSH BUTTON 13 VE ELECTRO VALVE 14 RG REGULATING GOVERNOR.

BA -1, 2, 3 & 4 POWER EQUIPMENT CUBICLE CAB-1 LOCO PILOT'S CAB NO.1 CAB-2 LOCO PILOT'S CAB NO.2 PC-1 LOCO PILOT'S DESK NO.1 PC-2 LOCO PILOT'S DESK NO.2 RSI SILICON RECTIFIER CUBICLE TPN PNEUMATIC CUBICLE TB PROGRAMME SWITCH BOARD IN CAB-2 TK-1 CONTACTOR CUBICLE IN CAB-2 TK-2 RESISTOR FRAME ON THE REAR OF CAB-2 TR RELAY PANEL IN CAB-2 MC MOTOR CHEST HT HIGH TENSION COMPARTMENT.

ABBREVIATION DESCRIPTION LOCATION A3 AMMETER FOR CAB1 PC-1 A4 AMMETER FOR CAB2 PC-2 ARNO ARNO CONVERTER MC-2 ASMGR AUXILIARY INTERLOCKS OF TAP CHANGER HT 2 ATFEX TRANSFORMER FOR BRAKING EXCITATION HT1 BA BATTERY BOTH SIDES OF THE UNDER FRAMES BL1-2 AUXILIARY CONTACTS ON THE SWITCH BOXES CAB1 & 2 PC1 & 2 BLCP1-2 COMPRESSOR SWITCH (AUTOMATIC) PC1 & 2 BLCPD1-2 COMPRESSOR SWITCH (DIRECT) PC1 & 2 BLDJ1-2 HIGH VOLTAGE CKT. BREAKER SWITCH PC1 & 2 BLLF1-2 MARKER & DESK'S LAMP'S SWITCH PC1 & 2 BLLM1-2 COMPARTMENT LAMP SWITCH PC1 & 2 BLPRD1-2 HEAD LIGHT DIM SWITCH PC1 & 2.

ABBREVIATION DESCRIPTION LOCATION BLPRF1-2 FRONT HEAD LIGHT SWITCH PC1 & 2 BLPRR1-2 REAR HEAD LIGHT SWITCH PC1 & 2 BLRA1-2 CAB HEATER SWITCH PC1 & 2 BLRDJ1-2 HIGH VOLTAGE CKT. BREAKER RESETTING SWITCH PC1 & 2 BLSN1-2 NEUTRAL SECTION SWITCH PC1 & 2 BLVMT1-2 TRACTION MOTOR'S BLOWERS SWITCH PC1 & 2 BLZLF1-2 MARKER (RED) LAMPS SWITCH PC1 & 2 BP1DJ PUSH BUTTON FOR TESTING DJ OPENING TR BP2DJ PUSH BUTTON FOR TESTING DJ CLOSING TR BPP1 & 2 PUSH BUTTON FOR OPERATING GR PROGRESSION PC1 & 2 BPR1 & 2 PUSH BUTTON FOR OPERATING GR REGRESSION PC1 & 2 BPSW PUSH BUTTON SWITCH FOR QUICK CHARGING OF BP PC 1 & 2 BV AUXILIARY CONTACTS OF HOM SWITCH CORRIDOR-1.

ABBREVIATION DESCRIPTION LOCATION BPT PUSH BUTTON FOR SELF CHECK OF SIGNALLING LAMPS TR C101 3-POLE CONTACTOR FOR COMPRESSOR NO.1 TK1 C102 3-POLE CONTACTOR FOR COMPRESSOR NO.2 TK1 C103 3-POLE CONTACTOR FOR COMPRESSOR NO.3 TK1 C105 3-POLE CONTACTOR FOR TRACTION MOTOR BLOWER NO1 TK1 C106 3-POLE CONTACTOR FOR TRACTION MOTOR BLOWER NO. 2 TK1 C107 3-POLE CONTACTOR FOR TRANSFORMER OIL COOLER BLOWER TK1 C118 ARNO STARTING PHASE CONTACTOR MC 2 C145 BREAKING EXCITATION CONTACTOR BA-3 CAPTFWA CONDENSER FOR TFWA TERMINALS A0-A1 ( AUX.WINDING ) HT 2 CAPTFP CONDENSER FOR TFP TERMINALS A3-A4 & A5-A6 HT 2 CCA FUSE FOR AUX. CONTROL CIRCUIT TB CCBA FUSE FOR BATTERIES TB.

ABBREVIATION DESCRIPTION LOCATION ADDL. CCBA FUSE FOR BATTERY +VE CABLE PROTECTION BA-1 BOX CCCPU FUSE FOR MICRO PROCESSOR TB CCDJ FUSE FOR Q45, C118, EFDJ & MTDJ BRANCHES TB CCINV FUSE FOR STATIC INVERTER TB CCLC FUSE FOR CAB, CORRIDOR, HT COMPARTMENT LIGHTING & WALL SOCKETS TB CCLF 1-2 FUSE FOR MARKER & PC LAMPS TB CCLS FUSE FOR SIGNALLING CIRCUIT ,RB & VCD TB CCPT FUSE FOR PANTO CKT TB CCRA 1-2 FUSE FOR CAB HEATERS TB CCSPM FUSE FOR SPEEDOMETER(ESMON) TB CCVT FUSE FOR CAB FAN MOTORS TB CGR 1, 2, 3 TAP CHANGER CONTACTORS HT 2 CHBA STATIC BATTERY CHARGER MC-2.

ABBREVIATION DESCRIPTION LOCATION CP 1, 2, 3 MAIN COMPRESSOR MC-1 CPA AUXILIARY COMPRESSOR CAB-1 CTF 1, 2, 3 TRACTION BRAKING CHANGE OVER CONTACTORS BA1, 2, 3 DJ HIGH VOLTAGE CIRCUIT BREAKER ROOF ECC FUSE TESTER TB EFDJ ELECTRO VALVE FOR CLOSING OF THE HIGH VOLTAGE CIRCUIT BREAKER DJ ASSEMBLY HT2 ELM CURRENT TRANSFORMER FOR BREAKING EXCITATION TRANSFORMER BA2 ET-1 ROOF SURGE ARRESTER ROOF ET-2 ROOF BUSHINGS SURGE ARRESTER ROOF ETTFP1-2 SURGE ARRESTERS FOR TFP HT-2 ETTFWA SURGE ARRESTERS FOR TFP HT-2 EVPHGR ELECTRO VALVE FOR GR OIL PUMP HT 2 FL FLASHER LIGHT UNIT ROOF.

ABBREVIATION DESCRIPTION LOCATION FLCU FLASHER LIGHT FOR CONTROL UNIT IN BOTH CABS GR TAP CHANGER HT-2 HBA BATTERY ISOLATING SWITCH TB HCP SELECTOR SWITCH FOR COMPRESSOR TB HOBA CHANGE OVER SWITCH FOR BATTERY NEGATIVE EARTHING TB HOM LOCO EARTHING SWITCH ROOF HPH DISCONNECTING SWITCH FOR OIL PUMP TB HPT-1 ISOLATING & EARTHING ROOF BAR FOR PANTOGRAPH1 ROOF HPT-2 ISOLATING & EARTHING ROOF BAR FOR PANTOGRAPH2 ROOF HQ 51/HPAR BY PASS SWITCH FOR Q 51 TB HQOA ISOLATION SWITCH FOR QOA TB HMCS1, 2 MOTOR CUT OUT SWITCH TB HQCVAR ISOLATING SWITCH FOR QCVAR TB.

ABBREVIATION DESCRIPTION LOCATION HQOP1, 2 CHANGE OVER SWITCH FOR TRACTION POWER EARTH FAULT RELAYS BA-2 HSIV EARTH FAULT BY PASSING SWITCH FOR SIV TB HVMT1 & 2 DISCONNECTING SWITCH FOR TRACTION MOTOR BLOWER TB HVRH DISCONNECTING SWITCH FOR OIL COOLER BLOWER MOTOR TB HVSI1-1 & 2 DISCONNECTING SWITCH FOR RECTIFIER BLOWER-1 & 2 RSI-1 & 2 HVSL- 1 & 2 DISCONNECTING SWITCH FOR SMOOTHENING REACTOR BLOWER MOTOR-1 & 2 TB J1 REVERSER FOR TRACTION MOTORS 1, 2 & 3 BA-1 J2 REVERSER FOR TRACTION MOTORS 4, 5 & 6 BA-2 L1 TO 6 LINE CONTACTOR FOR TRACTION MOTORS 1 TO 6 BA3 LA1-1/1-2 LAMPS FOR THE AMMETERS OF CAB-1 PC1 LA2-1/2-2 LAMPS FOR THE AMMETERS OF CAB-2 PC2 LBL1-1/1-2 LAMPS FOR SWITCHES BOX BL-1 PC1 LBL2-1/2-2 LAMPS FOR SWITCHES BOX BL-2 PC2.

ABBREVIATION DESCRIPTION LOCATION LC1-1/1-2 CEILING LAMP FOR CAB-1 CAB1 LC2-1/2-2 CEILING LAMP FOR CAB-2 CAB-2 LECC FUSE TESTER LAMP TB LF1/D-1/G MARKER LIGHTS CAB-1 (RIGHT & LEFT) CAB-1 LF2/D-2/G MARKER LIGHTS CAB-2 (RIGHT & LEFT) CAB-2 LM1-6 & 8 CORRIDOR LIGHTS SIDE WALLS LSCHBA1-2 SIGNALLING LAMP FOR STATIC BATTERY CHARGER PC1 & 2 LSDJ1-2 HIGH VOLTAGE CIRCUIT BREAKER SIGNALLING LAMP (RED) PC1 & 2 LSGR1-2 TAP CHANGER SIGNALLING LAMP (GREEN) PC1 & 2 LS GROUP1&2 DEFECTIVE LOCO INDICATION LAMP IN MU (RED) CAB1&2 LSOL1-2 HEALTHY LOCO INDICATION LAMP IN MU (YELLOW) PC1 & 2 LSP1-2 SLIPPING SIGNALLING LAMP (RED) PC1 & 2 LSB1-2 TRACTION BRAKING CONTROL CIRCUIT READINESS SIGNALLING LAMP (YELLOW) PC1 & 2.

ABBREVIATION DESCRIPTION LOCATION LSRSI1-2 RECTIFIER SIGNALLING LAMP (YELLOW) PC1 & 2 LTBA BATTERY SURGE ARRESTER TK2 M1-6 TRACTION MOTOR 1-6 BOGIE MCP1, 2, 3 MAIN COMPRESSOR MOTOR MC-1 MCPA AUXILIARY COMPRESSOR MOTOR PC1 MF1-6 MAIN FIELD FOR TRACTION MOTOR UNDER TRUCK MP1-2 MASTER CONTROLLER CAB1-2 PC1, 2 MPF1-2 BRAKING CONTROLLER PC1, 2 MPH OIL PUMP MOTOR HT 2 MPJ1-2 REVERSER HANDLE PC1 & 2 MPS1-2 FIELD WEAKENING CONTROLLER PC1 & 2 MTDJ DJ HOLDING ELECTRO VALVE ROOF MV 4 ELECTRO MAGNETIC VALVE FOR BP CHARGING TPN.