Arcteq AQ-T256, Instruction Manual, Page: 11 / 309

2 Abbreviations
AI – Analog input
AR – Auto-recloser
ASDU – Application service data unit
AVR – Automatic voltage regulator
BCD – Binary-coded decimal
CB – Circuit breaker
CBFP – Circuit breaker failure protection
CLPU – Cold load pick-up
CPU – Central processing unit
CT – Current transformer
CTM – Current transformer module
CTS – Current transformer supervision
DG – Distributed generation
DHCP – Dynamic Host Configuration Protocol
DI – Digital input
DO – Digital output
DOL – Direct-on-line
DR – Disturbance recorder
DT – Definite time
FF – Fundamental frequency
FFT – Fast Fourier transform
FTP – File Transfer Protocol
GI – General interrogation
HMI – Human-machine interface
HR – Holding register
HV – High voltage
HW – Hardware
IDMT– Inverse definite minimum time
IED – Intelligent electronic device
A AQ Q-T256 -T256
Instruction manual
Version: 2.06
© Arcteq Relays Ltd
IM00028 9