Các thuật ngữ – ký hiệu chuyên ngành điện


FM _ Frequency Modulation : Biến điệu tần số.

AC _ Alterating Current : Dòng điện xoay chiều.

DC _ Direct Current : Dòng điện một chiều.

FCO _ Fuse Cut Out : Cầu chì tự rơi

LBFOC _ Load Breaker Fuse Cut Out : Cầu chì tự rơi có cắt tải

CB _ Circuit Breaker : Máy cắt.

ACB _ Air Circuit Breaker : Máy cắt bằng không khí

MCCB _ Moduled Case Circuit Breaker : Máy cắt khối có dòng cắt

MCB _ Miniature Circuit Breaker : Bộ ngắt mạch loại nhỏ

VCB _ Vacuum Circuit Breaker : Máy cắt chân không.

RCD _ Residual Current Device : Thiết bị chống dòng điện dư.

DF : Distortion Factor : Hệ số méo dạng
THD : Total Harmonic Distortion : Độ méo dạng tổng do sóng hài
MOSFET: metal-oxide-Semiconductor Field Effect transistor
Trong đó FET : field efect transistor là transistor hiệu ứng trường

Reference input : tín hiệu vào , tín hiệu chuẩn
Controlled output : tín hiệu ra
SISO : single input single output : hệ thống 1 ngõ vào 1 ngõ ra
MIMO : multi input multi output : hệ thống nhiều ngõ vào , nhiều ngõ ra

A/M Automatic/Manual
AAAC All Aluminum Alloy Conductor
AAC All Aluminum Conductor
ACAR Aluminum Conductor Alloy Reinforced
ACB Air Circuit Breaker
ACSR Aluminum Conductor Steel Reinforced
AFC Approved For Construction
AFD Approved For Design
AHU Air Handling Unit
ANSI American National Standards Institute
APFR Automatic Power Factor Regulator
AR Auto Reclose (Relay)
ASAP As Soon As Possible
ATS Automatic Transfer Switch
AUX Auxiliary
AVR Automatic Voltage Regulator
AWA Aluminum Wire Armoured (Cable)
AWG American Wire Gauge
BB Bus Bar (Protection)
BCT Bushing Current Transformer
BFP Boiler Feed-water Pump
BHP Brake Horse Power
BIL Basic Impulse Level
BKR Breaker
B/L Bill of Lading
BM(BOM) Bill of Material
BOO Build Own Operate
BOP Balance Of Plant
BOT Build Own Transfer
BS British Standards (institute)
BSDG Black Start Diesel Generator
C&F Cost & Freight
CAR Construction All Risk (Insurance)
CBF Circuit Breaker Fail (Protection)
CBM CuBic Meter (M³)
CCPD Coupling Capacitor Potential Device
CCPP Combined Cycle Power Plant
CCW Counter Clock Wise
CED Chiep Executive Director
CEO Chiep Executive Officer
CFO Chiep Financial Officer
CFR Cost,and Freight
CHU Chiller Handling Unit
C/I Commercial Invoice
CIF Cost Insurance and Freight
CIP Carriage and Insurance Paid To
CLR Current Limiting Reactor
CM Construction Management
C/O Certificate of Origin
COS Cut Out Switch
CPT Carriage Paid To
CS Control Switch
CT Current Transformer
CTT Current Transformer Test Terminal
CUB Cubicle
CVT Capacitive Voltage Transformer
CU Copper conductor
CW Clock Wise
C/W Certificate of Weight
CWP Cooling Water Pump (Circulating Water Pump)
DAF Delivered At Frontier
D/G Diesel Generator
DCS Distributed Control System
DEF Delivered Ex Ship
DIFB Biased Differential (Relay)
DIFF. Differenfial (Relay)
DO Diesel Oil
DOL Direct On Line (Motor starting)
DS Disconnecting Switch
DTR Digital Transient Recorder
EF Earth Fault (Relay)
EFF. Efficiency
E/L Export License
ELCB Earth Leakage Circuit Breaker
ELR Earth Leakage Relay
EM Engineering Manager / Earth Mast
EMS Energy Management System
EOCR Electronic Over Current Relay
EPC Engineering Procurenment Construction
ES Earthing Switch
ESD Emergency Shut Down
ETA Estimated Time of Arrival
ETD Estimated Time of Departure
EX Excitor
EXW Ex Works
FAS Free Alongside Ship
FAT Factory (or Field or Final) Acceptance Test
FCA Free Carrier
FD Forced Draft ID(Induced Draft)

FDR Feeder
FL Fluorescent Light (Lamp)
FOB Free On Board
FOR Forced Outage Rate / Free On Rail
FRLS Flame Retardent(or Fire Resistant) Low Smoked
FSA Fuel Supply Agreement
FSD Fire Shut Down
GCB Gas Circuit Breaker
GEN Generator
GIS Gas Insulated Switchgear
GIS Geographic Information System
GPS Global Positioning System
GPT Grounding Potential Transformer
GT(G) Gas Turbine (Generator)
GTY Gantry
HFO Heavy Fuel Oil
HPS High Pressure Sodium
HRSG Heat Recovery Steam Generator
HVAC Heating, Ventilation & Air Conditioning
I/C Inspection Certiviate
ICT Interposing CT
ID Induced Draft FD(Induced Draft)

IDMT Inverse Definite Minimum Time
IEC International Electrotechnical Commission
IEEE Institute of Electrical and Electronics Engineers
IFA Issued For Approval
IFC Issued For Construction
IFD Issued For Design
IOM Inter Office Memorandum
I/P Inusrance Policy
IPB Isolated Phase Busduct
IPP Independant Power Producer
ISF Instrument Safety Factor
ITB Invitation To Bid
ITP Inspection (and) Test Plan
JB(J/B) Junction Box
JCS The Japanese Cable Manufacturer's Association Standard
JEC Standard of the Japanese Electrotechnical Committee
JEM The Standard of Japan Electrical Manufacturer's Association
JIS Japanese Industrial Standards
L.O. Lube Oil
L/C Letter of Credit
L/I Letter of Intent
LA Linghtning Arrester
LC Load Center
LCD Liquid Crystal Display
LCP Local Control Panel
LCS Local Control Station
LE / LE Lead Engineer / Loss of Excitation (Relay)
LED Light Emitting Diode
LFO Light Fuel Oil
LOR Lock Out Relay
LRC Load Ratio Controller
LT Line Trap
LTG Lighting
M/H Man Hour
M/M Man Month
MC Magnetic Contactor
MCC Motor Control Center
MDF Main Distribution Frame
MF Maintenance Free / Multiplying Factor
MK Marshalling Kiosk
MMI Man-Machine Interface
MOF Metering Outfit
MOM Minutes Of Meeting
MOU Memorandom Of Understanding
MOV Motor Operating Valve
MPR Motor Projection Relay / Monthly Progress Report
MTBF Mean Time Between Failure
MTO Material Take Off
MVR Manual Voltage Regulator
NEC National Electrical Code
NEMA National Electrical Manufacturer's Association
NGR(NER) Neutral Grounding Resister(Neutral Earthing Resister)
NGT(NGTR) Neutral Grounding Transformer
NLTC No Load Tap Changer
NPS Negative Phase Sequence (Relay)
NSPB Non Segregate Phase Busduct
NVD Neutral Voltage Displacement
O&M Operation & Maintenance
OCB / MOCB Oil Circuit Breaker / Minmum Oil Circuit Breaker
OCR Over Current Relay
OJT On the Job Training
OLTC On Load Tap Changer
ONAN/ONAF Oil Nature Air Nature / Oil Nature Air Forced
OV Over Voltage (Relay)
P&ID Piping and Instrument Diagram
P.U Pressurization Unit / Per Unit
P/O Purchase Order
PABX Private Automatic Branch Exchanger
PB Push Button
PC Procurement Coordinator
PCB Poly Chlorinated Bi-phenyl / Printed Circuit Board
PCS Pieces
PD Project Director
PE Project Engineer
PFD Process Flow Diagram
PI Post Insulator
PJT Project
P/L Packing List
PLC Programmable Logic Controller
PLCC Power Line Carrier Communication
PM Project Manager
PMT Project Management Team
PN Plant North
PNL Panel
PPA Power Purchase Agreement
PQ Pre-Qualification
PS Purchase Specification
PSS Power System Stabilizer
PT Potential Transformer
PTT Potential Transformer Test Terminal
PVC Poly Vinyl Chloride
R/L Remote/Local
RCP Remote Control Panel
REF Restriced Earth Fault (Relay)
RFQ(RFP) Request For Quotation (Proposal)
RIV Radio Inflenced Voltage
RM. Ringgit Malaysia
Rp. Rupiah
RP Reverse Power (Relay)
RPM Revolution Per Minute
Rs. Rupees
RTD Resistance Temperature Detector
RTU Remote Terminal Unit
RY Relay
S.C Static Condenser
S.R Series Reactor
S/S Substation
SA Surge Arrester
SBEF StandBy Earth Fault (Relay)
SCADA Supervisory Control And Data Acquisition
SCR Silicon Controlled Rectifier / Short Circuit Ratio
SCS Substation Control System
SER Sequence Event Recorder
SIL Surge Impedance Loading
SLD Single Line Diagram
SLS Synchronizing Switch
SPB Segregated Phase Busduct
SPST Single Pole Single Throw
SS Selector Switch or Syncro Switch
SSTD Solid State Trip Device
ST(G) Steam Turbine (Generator)
STP Sewage Treatment Plant
SW Switch
SWA (Galavinized) Steel Wire Armoured (Cable)
SYN Synchronizing
T/L Transmission Line
TB Terminal Board
TBE, TBA Technical Bid Evaluation (Analysis)
TBN Turbine
TCS Trip Circuit Supervision (Relay)
TCU Tele Counting Unit
TE Electrical reset Trip (Relay)
TEFC Totally Enclosed Fan Cooled
TEWAC Totally Enclosed Water (to) Air Cooled
TLP Transformer Local Panel
TPN Triple Pole Neutral
TR Transformer
TRV Transient Recovery Voltage
UPS Uninterruptable Power Supply
UV Under Voltage (Relay)
VCB Vacuum Circuit Breaker
VCS Vacuum Combination Starter
VRO Voltage Restrained Overcurrent (Relay)
VSAT Very Small Aperture Terminal
VT Voltage Transformer
WHRH Waste Heat Recovery Boiler
XLPE Cross Linked Poly Ethylene (Insulation)
Y2K Year 2000 (millenium bug)
ZCT Zero-phase Current Transformer


  1. … [Trackback]

    […] Here you will find 67351 more Information on that Topic: ino.com.vn/tin-tuc-cong-nghe/cac-thuat-ngu-ky-hieu-chuyen-nganh-dien/ […]