300 Electrical Abbreviations and Full Forms

300 Electrical Abbreviations and Full Forms

Electrical Abbreviations and Full Forms | Full Form of MCB, MCCB, RCCB, RCBO, ELCB, ACB, DP and UPS | In this post we have described the subject of electrical abbreviations and full full forms. Do you know why we have been using electrical abbreviations and full forms in electrical drawing? In electrical drawing, we have use short name(abbreviation) for the electrical components and equipments. If you want to read electrical drawings or you are a electrical engineer, you must know about electrical full forms.

Circuit Breakers Electrical Full Form

We should have know full forms about MCB, MCCB, RCCB, RCBO, ELCB, OCB, VCB and ACB to read a electrical drawings and attend the interviews. In the electrical full forms, we must know completely circuit breakers first. Because, in electrical engineers interviews recruiter asks questions about circuit breakers full forms.

MCB full form – Miniature Circuit Breaker.

MCCB full form – Moulded Case Circuit Breaker.

RCCB full form – Residual Current Circuit Breaker.

RCBO full form – Residual Current Circuit Breaker with Overload Protection.

ELCB full form – Earth Leakage Circuit Breaker.

OCB full form – Oil Circuit Breaker.

VCB full form – Vacuum Circuit Breaker.

ACB full form – Air Circuit Breaker.

Basic Electrical Term Full Forms

Electrical abbreviations of basic electrical terms are V, A, P, E, N, C, R, AC, DC, LT, HT, ELV, LV, MV, HV and EHV. Volt, ampere, power, earth, neutral, capacitor, resistor, alternating current, direct current, low voltage, high voltage, extra low voltage, low voltage, mega voltage, high voltage and extra high voltage are electrical full forms of the above electrical abbreviations.

Electrical Abbreviations and Full Forms

In below chart we have described about electrical full forms completely.

Example :

UPS full form – Uninterrupted Power Supply.

SP full form – Single Pole.

DP full form – Double Pole.

TP full form – Triple Pole.

What is the full form of circuit breakers

MCB full form – Miniature Circuit Breaker, MCCB full form – Moulded Case Circuit Breaker, RCCB full form – Residual Current Circuit Breaker, RCBO full form – Residual Current Circuit Breaker with Overload Protection, ELCB full form – Earth Leakage Circuit Breaker, OCB full form – Oil Circuit Breaker, VCB full form – Vacuum Circuit Breaker and ACB full form – Air Circuit Breaker.

Learn Basic Electrical

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Important Electrical Full Forms

UPS full form – Uninterrupted Power Supply, SP full form – Single Pole, DP full form – Double Pole and TP full form – Triple Pole.

Press Ctrl + F in your computer keyword to search the electrical full forms what you want.

S.N.  ELECTRICAL ABBREVIATIONS          ELECTRICAL  FULL FORMS

1.          AC - ALTERNATING CURRENT

2.          DC - DIRECT CURRENT

3.            V - VOLTS

4.            A - AMPERE

5.           M - MOTOR

6.            E - EARTH

7.          A/C - AIR CONDITIONER

8.            TP - TRIPLE POLE

9.            DP - DOUBLE POLE

10.          LA - LIGHT ARRESTER

11.          KA - KILO AMPERE

12.          LV - LOW VOLT

13.          HV - HIGH VOLT

14.          kV - KILOVOLT

15.         MV - MEGA VOLT

16.          HP - HORSEPOWER

17.          HT - HIGH TENSION

18.          LT - LOW TENSION

19.       kVA - KILOVOLT AMPERE

20.        ISO - ISOLATOR

21.      NVC - NO VOLT COIL

22.      OLR - OVERLOAD RELAY

23.      OLP - OVERLOAD PROTECTION

24.         SS - SALTER SWITCH

25.         TS - THERMO SWITCH

26.        TR - TRANSFORMER

27.        PT - PRESSURE TRANSMITTER

28.     DPT - DIFFERENTIAL PRESSURE TRANSMITTER

29.        FT - FLOW TRANSMITTER

30.        LT - LEVEL TRANSMITTER

31.     PCC - POWER CONTROL CENTRE

32.   MCC - MOTOR CONTROL CENTRE

33.  RCCB - RESIDUAL CURRENT CIRCUIT BREAKER

34. MPCB - MOTOR PROTECTION CIRCUIT BREAKER

35.   MCB - MINIATURE CIRCUIT BREAKER

36. MCCB - MOULDED CASE CIRCUIT BREAKER

37.    ACB - AIR CIRCUIT BREAKER

38.     VCB - VACUUM CIRCUIT BREAKER

39.     OCB - OIL CIRCUIT BREAKER

40.      PLC - PROGRAMMABLE LOGIC CONTROLLER

41.     DCS - DISTRIBUTED CONTROL SYSTEM

42.     HMI - HUMAN MACHINE INTERFACE

43.      RIO - REMOTE INPUT OUTPUT

44.     RTU - REMOTE TERMINAL UNIT

45.     DOL - DIRECT ONLINE

46.   EOCR - ELECTRONIC OVERCURRENT RELAY

47.    ELCB - EARTH LEAKAGE CIRCUIT BREAKER

48.     HRC - HIGH RUPTURE CAPACITY FUSE

49.     UPS - UNINTERRUPTED POWER SUPPLY

50.        JB - JUNCTION BOX

51.       TB - TERMINAL BLOCK

52.     LCS - LOCAL CONTROL STATION

53.       CT - CURRENT TRANSFORMER

54.       PT - POTENTIAL TRANSFORMER

55.   XLPE - CROSS LINKED POLYETHYLENE

56.   SWA - SINGLE WIRE ARMOURED

57.    PVC - POLYVINYL CHLORIDE

58.   PTFE - POLY TETRA FLUORO ETHYLENE

59.   FRLS - FIRE RESISTANCE LOW SMOKE

60.    EPR - ETHYLENE PROPYLENE RUBBER

61.HPMV - HIGH PRESSURE MERCURY VAPOUR LAMP

62.  HPSV - HIGH PRESSURE SODIUM VAPOUR LAMP

63.  SCIM - SQUIRREL CAGE INDUCTION MOTOR

64.  SRIM - SLIP RING INDUCTION MOTOR

65.  OLTC - ON LOAD TAP CHANGER

66.     NO - NORMALLY OPENED

67.     NC - NORMALLY CLOSED

68.   RTD - RESISTANCE TEMPERATURE DETECTOR

69.     BS - BRITISH STANDARDS

70. RPM - REVOLUTION PER MINUTE

71.  LDB - LIGHTING DISTRIBUTION BOARD

72. PDB - POWER DISTRIBUTION BOARD

73.SLDB - SECONDARY LIGHTING DISTRIBUTION BOARD

74.EMLDB- EMERGENCY LIGHTING DISTRIBUTION BOARD

75.MLDB - MAIN LIGHTING DISTRIBUTION BOARD

76. ACDB - ALTERNATING CURRENT DISTRIBUTION BOARD

77.MPDB - MAIN POWER DISTRIBUTION BOARD

78.  ACVS - AIR CONDITIONING AND VENTILATION SYSTEM

79.  ACSR - ALUMINIUM CABLE STEEL REINFORCED

80.  HART - HIGHWAY ADDRESSABLE REMOTE TRANSDUCER

81.     PID - PROPORTIONAL INTEGRAL AND DERIVATIVE

82.SCADA- SUPERVISORY CONTROL AND DATA ACQUISITION

83.  VVVF - VARIABLE VOLTAGE VARIABLE FREQUENCY

84. RCBO  - RESIDUAL CURRENT CIRCUIT BREAKER WITH OVERCURRENT PROTECTION

85. ACSR - ALUMINIUM CONDUCTOR STEEL REINFORCED

86.    AH - AMPERE-HOUR CAPACITY OF BATTERIES

87.  AVR - AUTOMATIC VOLTAGE REGULATOR

88.AWA -  ALUMINIUM WIRE ARMOUR

89.      B - ELECTRICAL SUSCEPTANCE

90. BAR - PRESSURE IN ATMOSPHERE

91.   BIL - BREAKDOWN INSULATION LEVEL

92.   BS - BRITISH STANDARD INSTITUTIONS

93.BTU - BRITISH THERMAL UNIT

94.     C - ELECTRICAL CAPACITANCE

95.CACA- TOTALLY ENCLOSED AIR CIRCUIT, AIR COOLED

96.CACW- TOTALLY ENCLOSED AIR CIRCUIT, WATER COOLED

97. CAD - COMPUTER AIDED DESIGN

98.    CB - CIRCUIT BREAKER

99.CBCU- CIRCUIT BREAKER CONTROL UNIT

100. CCR - CENTRAL CONTROL ROOM

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Electrical Full Forms of

CB full form – Circuit Breakers, MCB full form – Miniature Circuit Breaker, MCCB full form – Moulded Case Circuit Breaker, RCCB full form – Residual Current Circuit Breaker, RCBO full form – Residual Current Circuit Breaker with Overload Protection, ELCB full form – Earth Leakage Circuit Breaker, OCB full form – Oil Circuit Breaker, VCB full form – Vacuum Circuit Breaker, ACB full form – Air Circuit Breaker, UPS full form – Uninterrupted Power Supply, SP full form – Single Pole, DP full form – Double Pole and TP full form – Triple Pole.

S.N - ELECTRICAL ABBREVIATIONS - ELECTRICAL  FULL FORMS

101.  CEGB - CENTRAL ELECTRICITY GENERATING BOARD (UK)

102.CENELEC- EUROPEAN COMMITTEE FOR ELECTROTECHNICAL STANDARDISATION

103.COR CU- CORRUGATED COPPER

104.   CSA - CROSS SECTIONAL AREA

106.    CSI - CURRENT SOURCE INVERTER

107.   CSP - CHLOROSULPHONATED POLYETHYLENE

108.     CT - CURRENT TRANSFORMER

109.     CU - UN-TINNED COPPER

110. CUWB- COPPER WIRE BRAID

111.db (A) - MEASUREMENT UNIT OF SOUNDS DECIBELS

112.   DCS - DISTRIBUTED CONTROL SYSTEM

113.     DE - DRIVE END OF A SHAFT

114.deg C - THERMAL TEMPERATURE IN DEGREES CELSIUS

115.deg F - THERMAL TEMPERATURE IN DEGREES FAHRENHEIT

116.deg K - THERMAL TEMPERATURE IN DEGREES KELVIN

117.  DMS - DATA MANAGEMENT SYSTEM

118.  DMT - DEFINITE MINIMUM TIME

119.   DOL - DIRECT ONLINE STARTER (INDUCTION MOTOR)

120.  DWR - DIVIDED WINDING ROTOR SYNCHRONOUS GENERATOR

121. ECHA - EQUIPMENT CERTIFIED FOR HAZARDOUS AREAS

122.    EEC - EUROPEAN ECONOMIC COMMUNITY

123.EEMVA- THE ENGINEERING EQUIPMENT AND THE MATERIALS USER ASSOCIATION

124.   EHV - EXTRA HIGH VOLTAGE

125.EIEMA- THE ELECTRICAL INSTALLATION EQUIPMENT MANUFACTURER’S ASSOCIATION

126.    ELV - EXTRA LOW VOLTAGE (LESS THAN 50V)

127.   EMA - ETHYLENE METHYL ACRYLATE

128.   EMC - ELECTROMAGNETIC COMPATIBILITY

129.    EMI - ELECTROMAGNETIC INTERFERENCE

130.   EMF - ELECTROMOTIVE FORCE

131.EPDM - ETHYLENE PROPYLENE DIENE MONOMER

132.    EPR - ETHYLENE PROPYLENE RUBBER

133.    ERA - ELECTRICAL RESEARCH ASSOCIATION

134.   ERM - ELECTRONIC RESTART MODULE

135.   ESD - EMERGENCY SHUTDOWN

136.   ESP - ELECTRIC SUBMERSIBLE PUMP

137. EX () - CERTIFICATION SYMBOL FOR HAZARDOUS AREA EQUIPMENT

138. EWS - ENGINEERING WORK STATION

139.PTL - PIN TYPE CABLE LUG

140.  FBA - FACTORY BUILT ASSEMBLIES

141.  FCU - FEEDER CONTROL UNIT

142. F&G - FIRE AND GAS

143.FEED - FRONT END ENGINEERING AND DESIGN OF A PROJECT

144.FREQ- FREQUENCY (HZ)

145.  FAT - FACTORY ACCEPTANCE TESTING

146.   CG - CABLE GLANDS

147. FLEX - FLEXIBLE USED FOR CABLES

148.       G - ELECTRICAL CONDUCTANCE, OR GROUNDING

149.   GCB - GAS CIRCUIT BREAKER

150.   GCP - GENERATOR CONTROL PANEL

151.    GIS - GAS INSULATED SWITCHGEAR (OR) SUBSTATION

152.  GOR - GAS TO OIL RATIO OIL WELL FLUIDS

153.  GRP - GLASS REINFORCED PLASTIC

154.GSWA- GALVANISED STEEL WIRE ARMOUR

155.GSWB- GALVANISED STEEL WIRE BRAID

156.  GTG - GAS TURBINE GENERATOR

157.  GTO - GATE TURN OFF THYRISTOR

158.  HCL - HYDROGEN CHLORIDE, GAS OR ACID

159.    CT - CABLE TRAY

160.HOFR- HEAT AND OIL RESISTING, FLAME RETARDANT

161.HVAC- HEATING VENTILATION AND AIR CONDITIONING

162.    HZ - FREQUENCY IN CYCLES PER SECOND, OR HERTZ

163.        TPS - THERMAL POWER STATION

164.   IAC - ALTERNATING CURRENT

165. IALA - INTERNATIONAL ASSOCIATION OF LIGHTHOUSE AUTHORITIES

166.     ICI - IMPERIAL CHEMICAL INDUSTRIES

167.   IDC - DIRECT CURRENT

168.IDMT- INVERSE DEFINITE MINIMUM TIME

169.    IEC - INTERNATIONAL ELECTROTECHNICAL COMMISSION

170.    IEE - THE INSTITUTION OF ELECTRICAL ENGINEERS OF UK

171.  IEEE - THE INSTITUTE OF ELECTRONIC AND ELECTRICAL ENGINEERS OF USA

172.    I/O - INPUT OR OUTPUT SIGNALS OR QUANTITY

173.  IMO - INTERNATIONAL MARITIME ORGANISATION

174. IMCS - INTEGRATED MOTOR CONTROL SYSTEM

175.   IMS - INFORMATION MANAGEMENT SYSTEM

176.  INST - INSTANTANEOUS QUANTITY

177.    INT - INTERMITTENT QUANTITY

178.       IP - INSTITUTE OF PETROLEUM

179.       IR - INSULATION RESISTANCE

180.       IS - INTRINSICALLY SAFE SIGNAL, CIRCUIT OR EQUIPMENT

181. IS/IN - RATIO OF STARTING CURRENT TO RUNNING CURRENT

182.    ISO - INTERNATIONAL STANDARDS  ORGANISATION

183.         J - ENERGY JOULES OR NEWTON - METRES

184.         J - CURRENT DENSITY, AMPS/MM2

185.      kA - KILO AMPERE

186.KEMA - SHORT CIRCUIT TESTING AUTHORITY IN THE NETHERLAND

187.       kg - KILOGRAM

188.      km - LENGTH IN KILOMETER

189.   kph - KILOMETRES PER HOUR

190.     I/O - INPUT OR OUTPUT SIGNALS OR QUANTITY

191.      kV - KILOVOLTS

192.    kVA - KILOVOLT AMPERES

193.  kVAr - REACTIVE KILOVOLT AMPERES

194.     kW - KILOWATTS

195.         L - ELECTRICAL INDUCTANCE IN HENRIES

196.         L - LINE OR LOCAL CONTROL OPERATION

197.    LAN - LOCAL AREA NETWORK

198.    LBS - WEIGHT OF A SUBSTANCE IN POUNDS

199.     LDS - LOW DENSITY FOAM

200.     LED - LIGHT EMITTING DIODE

Circuit Breakers full form

Circuit Breakers, MCB full form – Miniature Circuit Breaker, MCCB full form – Moulded Case Circuit Breaker, RCCB full form – Residual Current Circuit Breaker, RCBO full form – Residual Current Circuit Breaker with Overload Protection, ELCB full form – Earth Leakage Circuit Breaker, OCB full form – Oil Circuit Breaker, VCB full form – Vacuum Circuit Breaker, ACB full form – Air Circuit Breaker, UPS full form – Uninterrupted Power Supply, SP full form – Single Pole, DP full form – Double Pole and TP full form – Triple Pole.

S.N.  - ELECTRICAL ABBREVIATIONS -  ELECTRICAL  FULL FORMS

201.        LEL - LOWER EXPLOSIVE LIMIT

202.          LF - LOW FREQUENCY

203.       LHS - LEFT HAND SIDE

204.      LMS - LOAD MANAGEMENT SYSTEM

205.      LNG - LIQUEFIED NATURAL GAS

206.      LOC - LOCAL OPERATION

207.      LPG - LIQUEFIED PETROLEUM GAS

208.       LSS - LOAD SHEDDING SYSTEM

209.       LSF - LOW SMOKE AND FUMES, APPLIED TO CABLES AND WIRES

210.     LSLH - LOW SMOKE LOW HALOGEN

211.        LEL - LOWER EXPLOSIVE LIMIT

212.       LSR - LOAD SHARING SYSTEM

213.        LV  - LOW VOLTAGE

214.L1, L2, L3, N- NOTATION FOR LINE AND NEUTRAL VOLTAGES AND  CURRENTS

215.      LUX - LEVEL OF ILLUMINATION

216.       LEL - LOWER EXPLOSIVE LIMIT

217.         m - LENGTH OR DIMENSION IN METRES, OR MONTH

218.      mA - CURRENT IN MILLIAMPERES

219.        M - MANUAL OPERATION

220 mBAR - MILLIBAR

221.     MB - HIGH PRESSURE MERCURY, WITHOUT PHOSPHOR COATING

222.   MBF - HIGH PRESSURE MERCURY, WITH PHOSPHOR COATING

223. MBFR - HIGH PRESSURE MERCURY, WITH PHOSPHOR COATING INTERNAL REFLECTOR

224.    MBI - HIGH PRESSURE DISCHARGE WITH METALLIC HALIDES

225.  MBIF - HIGH PRESSURE DISCHARGE WITH METALLIC HALIDES, WITH PHOSPHOR COATING

226.   MBR - DOUBLE ENDED LINEAR ARC TUBE

227. MBTF - COMBINATION OF MBF LAMP AND A FILAMENT LAMP

228.  MCC  - MOTOR CONTROL CENTRE

229.   MCF - SWITCH-START LAMP, ALSO USED FOR TUBULAR FLUORESCENT LAMPS IN GENERAL

230. MCFE - STARTLESS LAMP, COATED WITH SILICONE

231. MCFA - STARTLESS LAMP, WITH EARTH STRIP, MAINLY USED IN COLD ENVIRONMENTS

232.  MBIF - HIGH PRESSURE DISCHARGE WITH METALLIC HALIDES, WITH PHOSPHOR COATING

233.   MCR - MAXIMUM CONTINUOUS RATING

234.  MCU - MOTOR CONTROL UNIT

235.  MHO - UNIT OF ELECTRICAL ADMITTANCE

236.    MIC - MAXIMUM IGNITION CURRENT

237.  MICC - MINERAL INSULATED CALENDER CABLE

238.MIMIC- MIMIC DISPLAY PANEL

239.  MMF - MAGNETOMOTIVE FORCE

240.MMSCF- MILLION STANDARD CUBIC FEET OF A CUBIC

241.      MT - MICA GLASS TAPE

242. MTTR - MEAN TIME TO REPAIR

243.     MV - MEDIUM VOLTAGE

244.     mV - VOLTAGE IN MILLIVOLTS

245.  MVA - MEGAVOLT AMPERES

246.MVAr - REACTIVE MEGA VOLT AMPERES

247.   MW - MEGAWATTS

248. NACE - NATIONAL ASSOCIATION OF CORROSION ENGINEERS (USA)

249.   NBR - NITRILE BUTADIENE RUBBER

250.NC-N/C- NORMALLY CLOSED SWITCHING DEVICE

251.   NDE - NON DRIVE END OF A SHAFT

252. MCFE - STARTLESS LAMP, COATED WITH SILICONE

253.NEMA - THE NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (USA)

254.    NEC - NATIONAL ELECTRIC CODE (USA)

255.    NER - NEUTRAL EARTH RESISTOR

256. NFPA - NATIONAL FIRE PROTECTION ASSOCIATION

257.       Ni - NICKEL METAL

258.NO-N/O- NORMALLY OPEN SWITCHING DEVICE

259.    NPT - NATIONAL PIPE THREADS (USA)

260.      NS - USED TO DESCRIBE A TYPE OF VARIABLE SPEED AC MOTOR

261.    NTS - NOT TO SCALE

262.OC-O/C- OVERCURRENT OR OPEN CIRCUIT

263.OF-O/F- OVERFREQUENCY

264.  OFAF - FORCED CIRCULATION OF INTERNAL LIQUID, FORCED HEAT EXCHANGE TO AIR

265. OFAN - FORCED CIRCULATION OF INTERNAL LIQUID, NATURAL HEAT TO AIR

266.    OHL - OVERHEAD LINE

267.OHMS - UNIT OF ELECTRICAL RESISTANCE OR IMPEDANCE

268.    OIM - OFFSHORE INSTALLATION MANAGER

269.OL-O/L- OVERLOAD

270. ONAF - NATURALAY CIRCULATED INTERNAL LIQUID, FORCED HEAT EXCHANGING TO AIR

271.ONAN - NATURALAY CIRCULATED INTERNAL LIQUID, NATURAL HEAT EXCHANGING TO AIR

272. OSHA - OCCUPATIONAL HEALTH AND SAFETY ADMINISTRATION (USA)

273. OV-O/V- OVERVOLTAGE

274. P – W - POWER OR WATTS

275.     PCC - POINT OF COMMON CONNECTION

276.     PVC - POLYVINYL CHLORIDE

277.   PVDF - POLYVINYLIDENE FLUORIDE

278.PTP-PET- POLYETHYLENE TEREPHTHALATE

279.  PWM - PULSE WIDTH MODULATION

280.       QA - QUALITY ASSURANCE

281.       QC  - QUALITY CONTROL

282.           R - ELECTRICAL RESISTANCE

283.     RAM - RANDOM ACCESS MEMORY

284.      RCU - REMOTE CONTROL UNIT

285.      RHS - RIGHT HAND SIDE

286.     RMS -  ROOT MEAN SQUARE

287.    ROM - READ ONLY MEMORY

288.      RTU - REMOTE TRANSMITTER UNIT

289.       SF6 - SULPHUR HEXAFLUORIDE

290.      STG - STEAM TURBINE GENERATOR

291.    SWA - STEEL WIRE ARMOUR

292. SWBD - SWITCH BOARD

293. SWGR - SWITCHGEAR

294. TDRM - TIME DELAYED RESTART RELAY

295.       TG - TURBO GENERATOR, GAS OR STEAM

296.     TCP - GAS TURBINE CONTROL PANEL

297.   TPRL - TOTAL PLANT RUNNING LOAD

298.     UPS - UNINTERRUPTIBLE POWER SUPPLY UNIT

299.       UV - UNDERVOLTAGE

300.  TNEB - TAMIL NADU ELECTRIC BOARD

300 Electrical Abbreviations and Full Forms

UPS full form – Uninterrupted Power Supply, SP full form – Single Pole, DP full form – Double Pole, TP full form – Triple Pole, MCB full form – Miniature Circuit Breaker, MCCB full form – Moulded Case Circuit Breaker, RCCB full form – Residual Current Circuit Breaker, RCBO full form – Residual Current Circuit Breaker with Overload Protection, ELCB full form – Earth Leakage Circuit Breaker, OCB full form – Oil Circuit Breaker, VCB full form – Vacuum Circuit Breaker, ACB full form – Air Circuit Breaker.

MCB full form - Miniature Circuit Beaker

MCCB full form - Moulded Case Circuit Breaker

ELCB full form - Earth Leakage Circuit Breaker

OCB full form - Oil Circuit Breaker

RCCB full form - Residual Current Circuit Breaker

RCBO full form - Residual Current Circuit Breaker Overload

ACB full form - Air Circuit Breaker

VCB full form - Vacuum Circuit Breaker

DP - Double Pole 

Final Word

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