Electrical Equipment List - Abbreviations

Electrical Equipment List - Abbreviations

ACB Air Circuit Breaker

VCB = Vacuum Circuit Breaker

MCB = Miniature Circuit Breaker

MCCB = Molded case circuit breaker

MPCB Motor Protection Circuit Breaker

EMPR = Electronic Motor Protection RELAY

RCCB = Residual Current Circuit Breaker

RCBO = Residual Current Circuit Breaker With

Over-Current Protection

ELCB Earth Leakage Circuit Breaker

HRC = Fuse High Rupture Capacity Fuse

OLTC = On Load Tap Change

SF6 Circuit Breaker = Sulphur Hexafluoride Circuit Breaker

MPDB = Main Power Distribution Board

ACDB Alternating Current Distribution Board

HT = High tension > Transformer HT Side

LT = Low tension

DO Fuse = Drop Out Fuse

DCDB = Direct current Distribution Board

PDB Power Distribution Board

PCC = Power Control Center

MCC Motor Control Centre

MCP = Motor Control Panel

VVVF = Variable Voltage Variable Frequency Drive

VFD = Variable Frequency Drive

DOL = Direct Online

RDOL = Reverse Duty on Line

MLDB = Main Light Distribution Board

SLDB = Secondary Lighting Distribution Board

EMLDB = Emergency Light Distribution Board

CPSS = Construction Power Substation

DPS = Distributed Power Substation

RCC = Remote Control Cables

FCMA = Flux Compensated Magnetic Amplifier

UPS = Un-Interrupted Power Supply

SMF Battery = Sealed Maintenance Free

JB Junction Box

PB = Push Button

TB = Terminal Box

LCB = Local Control Board

LCS Local Control Station

SPNDB = Short Circuit Protection Neutral Distribution Board

TPNDB = Phase Three and Neutral Distribution Board

CT = Current Transformer

PT = Potential Converter

SCIM = Squirrel Cage Induction Motor

ACVS Air-conditioning and VentilationS ystem

FDA = Fire Detection & Alarm

PCS = Pull Cord Switch

ZSS = Zero Speed Switch

BSS = Belt Sway switch

NO = Normally opened

NC = Normally Closed

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