Acronym Full Form
AAACAll Aluminum Alloy Conductor
AACAll Aluminum Conductor
AB SwitchAir Break Switch
ABCAerial Bundled Conductors or Aerial Bundled Cables
ACAlternating Current
ACBAir Circuit Breaker
ACDBAlternating Current Distribution Board
ACSRAluminum Conductors Steel Reinforced
ACVSAir Conditioning And Ventilation System
AFCAutomated Frequency Control
AFCAvailable Fault Current
AFCIArc Fault Circuit Interrupter
AHAmpere Hour
AHUAir Handling Unit
AICAmpere Interrupting Capacity
ALCIAppliance Leakage Current Interrupter
ATSAutomatic Transfer Switch
AWGAmerican Wire Gauge
BCRBackspace card reader and Barcode reader
BERBit Error Rate
BSSBelt Sway Switch
CFCContinuous Function Chart
CPSSConstruction Power Substation
CPTControl Power Transformer
CTCurrent Transformer
DACDigital to Analog Converter
DBDistribution Board
DCDirect Current
DCDBDirect Current Distribution Board
DCDBDirect Current Distribution Board
DCSDistributed Control System
DO FuseDrop Out Fuse
DOLDirect On Line
DORDigital Optical Recording
DPDistributed Peripheral
DPDouble Pole
DPICDouble Pole Iron Clad
DSSDistribution Power Substation
EEPROMElectrically Erasable Programmable Read Only Memory
EFExhaust Fan
ELCBEarth Leakage Circuit Breaker
EMLDBEmergency Lighting Distribution Board
EMPRElectronic Motor Protection Relay
EPROMErasable Programmable Read Only Memory
FBTFlyback Transformer
FCMAFlux Compensated Magnetic Amplifier
FDAFire Detection And Alarm
FLAFull Load Amperes
FMCFlexible Metal Conduit
GDTGas Discharge Tube
GFCIGround Fault Circuit Interrupter
GFIGround Fault Interrupter
GI BusbarGalvanized Iron Bus Bar For Earthing
GISGas Insulated Switchgear
HARTHighway Addressable Remote Transducer
HMIHuman Machine Interface
HRCFuse High Rupture Capacity Fuse
HTHigh Tension
ICDBIron Clad Distribution Board
ICSPIn Circuit Serial Programming
IGIsolated Ground
IMCIntermediate Metal Conduit
ISMCIndian Standard Medium Weight Channel
JBJunction Box
kAkiloamps or kilo Amperes
KVKilo Volts
KVAKilo Volt Amperes
KvarKilo Volt Amperes Reactive
KWHKiloWatt Hour
LALightning Arrester
LCBLocal Control Board
LCSLocal Control Station
LDRLight Dependent Resistor
LEDLight Emitting Diode
LOPTLine Output Transformer
LPSLightning Protection System
LTLow Tension
LVDTLinear Variable Differential Transformer
MCBMiniature Circuit Breaker
MCCMotor Control Centre
MCCMotor Control Center Panel
MCCBMolded Case Circuit Breaker
MCPMotor Control Panel
MCPMotor Circuit Protection
MFMultiplying Factor
MISOMaster Input Slave Output
MLDBMain Lighting Distribution Board
MMIMan-Machine Interface
MOSIMaster Output Slave Input
MOVMetal oxide varistor
MPCBMotor Protection Circuit Breaker
MPDBMain Power Distribution Board
MPIMulti-Point Interface
MSMain Switch
MVAMega Volt Amperes
MvarMega Volt Amperes Reactive
NCNormally Closed
NCTNeutral Current Transformer
NLNeutral Link
NONormally Opened
NONormally Open
OLTCOn Load Tap Changer
PBPush Button
PCCPower Control Centre
PCCPower Control Centre Panel
PCSPull Cord Switch
PDBPower Distribution Board
PDPPower Distribution Panel
PID ControlProportional Integral And Derivative Control
PLCProgrammable Logic Controller
PROMProgrammable Read Only Memory
PTPotential Transformer
PVCPoly Vinyl Chloride
RAMRandom Access Memory
RCBOResidual Current Circuit Breaker With Over-Current Protection
RCBOResidual Current Circuit Breaker with Overload Protection
RCCRemote Control Cables
RCCBResidual Current Circuit Breaker
RCDResidual Current Device
RDOLReverse Duty On Line
RFIDRadio Frequency Identification
RIORemote Input Output
RMCRigid Metal Conduit
RMGRing Main Gear
RMURing Main Unit
RNCRigid Non Metallic Conduit
ROMRead Only Memory
RTDResistance Temperature Detector
SBSwitch Board
SCADASupervisory Control And Data Acquisition
SCIMSquirrel Cage Induction Motor
SCKSerial Clock
SCRSilicon Controlled Rectifier
SF6 Circuit BreakerSulphur Hexafluoride Circuit Breaker
SFCSequential Function Chart
SFUSwitch Fuse Unit
SLDBSecondary Lighting Distribution Board
SMF BatterySealed Maintenance Free Battery
SMSBSub Main Switchboard
SPSingle Pole
SPDTSingle Pole Double Throw
SPISerial Peripheral Interface
SPNDBShort Circuit Protection Neutral Distribution Board
SPSTSingle Pole Single Throw
SPTStranded Parallel Thermoplastic
STShunt Trip
STRStatimax Trip Release
SWGStandard Wire Gauge
TBTerminal Box
TEFCTotal Enclosed Fan Cooled
TESCTotally Enclosed Surface Cooled
TMCBThermal Magnetic Circuit Breaker
TPDTTriple Pole Double Throw
TPICTriple Pole Iron Clad
TPNDBThree Phase And Neutral Distribution Board
TPSTriple Pole Switch
TPSTTriple Pole Single Throw
TRSTough Rubber Sheathed
TTLTransistor-Transistor Logic
TVS-DiodeTransient Voltage Suppression Diode
UARTUniversal Asynchronous Receiver and Transmitter
UDSUniform Drawing System
UGUnder Ground
UPSUn-Interrupted Power Supply
UPSUninterruptible Power Supply
USARTUniversal Synchronous and Asynchronous Receiver and Transmitter
USBUniversal Serial Bus
VAVolt Ampere
VarVolt Ampere Reactive
VCBVacuum Circuit Breaker
VCCVoltage at the common collector
VCMVehicle Communication Module
VDUVisual Display Unit
VFDPVariable Frequency Drive Panel
VIRVulcanized Indian Rubber
VSDVariable Speed Drive
VTVoltage Transformer
VVVFVariable Voltage Variable Frequency Drive
XLPECross-linked Polyethylene
ZSSZero Speed Switch
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