Section 10 Glossary - ABB Relion 650 Series Installation Manual

1MRK 514 013-UEN -

Section 10

650 series

Installation Manual

Glossary

AC

Alternating current

ACT

Application configuration tool within PCM600

A/D converter

Analog to digital converter

ADBS

Amplitude dead-band supervision

ANSI

American National Standards Institute

AR

Autoreclosing

ASCT

Auxiliary summation current transformer

ASD

Adaptive signal detection

AWG

American Wire Gauge standard

BR

External bi-stable relay

BS

British standard

CAN

Controller Area Network. ISO standard (ISO 11898) for

serial communication

CB

Circuit breaker

CCITT

Consultative Committee for International Telegraph and

Telephony. A United Nations sponsored standards body

within the International Telecommunications Union.

CCVT

Capacitive Coupled Voltage Transformer

Class C

Protection Current Transformer class as per IEEE/ ANSI

CMPPS

Combined mega pulses per second

CO cycle

Close-open cycle

Co-directional

Way of transmitting G.703 over a balanced line. Involves

two twisted pairs making it possible to transmit information

in both directions

COMTRADE

Standard format according to IEC 60255-24

Contra-directional Way of transmitting G.703 over a balanced line. Involves

four twisted pairs of with two are used for transmitting data

in both directions, and two pairs for transmitting clock signals

CPU

Central processor unit

CR

Carrier receive

CRC

Cyclic redundancy check

CS

Carrier send

Section 10

Glossary

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