ABB Transformer protection RET670

ACC Actual channel

ACT Application configuration tool within PCM600

A/D converter Analog-to-digital converter

ADBS Amplitude deadband supervision

ADM Analog digital conversion module, with time synchronization

AI Analog input

ANSI American National Standards Institute

AP Access Point. An AP can physically be a single port / SFP if no redundant

communication has been configured; it can also use two physical ports / SFPs

if redundant communication, such as HSR / PRP / RSTP, is configured.

AR Autoreclosing

ASCT Auxiliary summation current transformer

ASD Adaptive signal detection

ASDU Application service data unit

AWG American Wire Gauge standard

BBP Busbar protection

BFOC/2,5 Bayonet fiber optic connector

BFP Breaker failure protection

BI Binary input

BIM Binary input module

BOM Binary output module

BOS Binary outputs status

BR External bistable relay

BS British Standards

BSR Binary signal transfer function, receiver blocks

BST Binary signal transfer function, transmit blocks

C37.94 IEEE/ANSI protocol used when sending binary signals between IEDs

CAM Central Account Management

CAN Controller Area Network. ISO standard (ISO 11898) for serial communication

CB Circuit breaker

CBM Combined backplane module

CCITT Consultative Committee for International Telegraph and Telephony.

A United Nations-sponsored standards body within the International

Telecommunications Union.