Abbreviations For Engineering Terms

1. A: AMPERS, AMPS 

2. HT : HIGH TENSION

3. LT : LOW TENSION

4. AB SWITCH : AIR BREAK SWITCH

5. DO FUSE : DROP OUT  FUSE

6. ACB : AIR CIRCUIT BREAKER

7. VCB : VACCUM CIRCUIT BREAKER

8. ACDB : ALTERNATING CURRENT DISTRIBUTION BOARD

9. DCDB : DIRECT CURRENT DISTRIBUTION BOARD

10. PDB : POWER DISTRIBUTION BOARD

11. MPDB : MAIN POWER DISTRIBUTION BOARD

12. PCC : POWER CONTROL CENTRE

14. MCC : MOTOR CONTROL CENTRE

15. MCP : MOTOR CONTROL PANEL

16. VVVF : VARIABLE VOLTAGE VARIABLE FREQUENCY DRIVE

17. VSD : VARIABLE SPEED DRIVE

18. DOL : DIRECT ON LINE 

19. RDOL : REVERSE DUTY ON LINE

20. MLDB : MAIN LIGHTING DISTRIBUTION BOARD

21. SLDB : SECONDARY LIGHTING DISTRIBUTION BOARD

22. EMLDB : EMERGENCY LIGHTING DISTRIBUTION BOARD

23. CPSS : CONSTRUCTION POWER SUBSTATION

24. DSS: DISTRIBUTION POWER SUBSTATION

25. RCC: REMOTE CONTROL CABLES

26. MCB: MINIATURE CIRCUIT BREAKER

27. MCCB: MOULDED CASE CIRCUIT BREAKER

28. MPCB: MOTOR PROTECTION CIRCUIT BREAKER

29. EMPR: ELECTRONIC MOTOR PROTECTION RELAY

30. RCCB: RESIDUAL CURRENT CIRCUIT BREAKER

31. RCBO: RESIDUAL CURRENT CIRCUIT BREAKER WITH OVERCURRENT PROTECTION

32. ELCB: EARTH LEAKAGE CIRCUIT BREAKER

33. HRC FUSE: HIGH RUPTURE CAPACITY FUSE

34. OLTC: ON LOAD TAP CHANGER

35. FCMA: FLUX COMPENSATED MAGNETIC AMPLIFIER

36. UPS: UNINTERRUPTED POWER SUPPLY

37. SMF BATTERY: SEALED MAINTENANCE-FREE BATTERY

38. JB: JUNCTION BOX

39. PB: PUSH BUTTON

40. TB: TERMINAL BOX

41. LCB: LOCAL CONTROL BOARD

42. LCS: LOCAL CONTROL STATION

43. SPNDB: SHORT CIRCUIT PROTECTIONEUTRAL DISTRIBUTION BOARD

44. TPNDB: THREE-PHASE AND NEUTRAL DISTRIBUTION BOARD

45. CT : CURRENT TRANSFORMER

46. PT: POTENTIAL TRANSFORMER

47. SCIM : SQUIRREL CAGE INDUCTION MOTOR

48. ACVS: AIR CONDITIONING AND