CET Electric Technology
5
Glossary
AI/AO
= Analog Input/Output
CT
= Current Transformer
DI/DO
= Digital Input/Output
DMD
= Demand
DR
= Data Recorder
FIFO
= First In First Out
HTTP
= Hyper Text Transfer Protocol
I4
= Measured Neutral Current
In
= Calculated Neutral Current
IR or Ir
= Residual Current
MB
= Mega Byte
RMS
= Root Mean Square
PAR
= Peak to Average Ratio
PF
= Power Factor
PT
= Power Transformer
SNTP
= Simple Network Time Protocol
SMTP
= Simple Mail Transfer Protocol
SOE
= Sequence of Events
TDD
= Total Demand Distortion
TFTP
= Trivial File Transfer Protocol
THD
= Total Harmonics Distortion
TOHD
= Total Odd Harmonics Distortion
TEHD
= Total Even Harmonics Distortion
TOU
= Time of Use
Ull
= Line-to-Line Voltage
Uln
= Line-to-Neutral Voltage
WAGES = Water, Air, Gas, Electricity, Steam