01/02/2022
AB Switch = Air Break switch
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 On line
RDOL = Reverse Duty on Line
MLDB = Main Light Distribution Board
SLDB = Secondary Lighting Distribution Board
EMLDB = Emergency Light Distribution Board
CPSS = Construction Power Substation
DSS = 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 Ventilation System
FDA = Fire Detection & Alarm
PCS = Pull Cord Switch
ZSS = Zero Speed Switch
BSS = Belt Sway switch
NO = Normally opened
NC = Normally Closed
TEFC = Total Enclosed Fan Cooled
TESC = Totally Enclosed Surface Cooled
GI Bus bar = Galvanized Iron Bus Bar For Farthing
PLC = Programmable Logic Controller
DCS = Distributed Control System
MPI = Multi Point Interface
DP = Distributed parameters
SCADA = Supervisory and Data Acquisition
HART = Highway Addressable Remote Transducer
HMI = Human Machine Identifier
MMI = Man Machine Identifier
VDU = Visual Display Unit
RIO = Remote input Output
TCP / IP = Transmission Control Protocol – Internet Protocol
CFC =Continuous Function Chart
SFC = Sequential Function Chart
PID Control = Proportional Integral And Derivative Control
RAM = Random Access Memory
ROM = Read Only Memory
PROM = Programmable Read Only Memory
EPROM = Erasable Programmable Read Only Memory
EEPROM = Electrically Erasable Programmable Read Only Memory
