ABB RELION 670 SERIES Applications Manual page 938

Line distance protection

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Table of Contents

Liquid crystal display

Line data communication module

Local detection device

Light-emitting diode

LON network tool

Local operating network

Miniature circuit breaker

Mezzanine carrier module

Milli-ampere module

Main processing module

Value of measurement

Multifunction vehicle bus. Standardized serial bus originally

developed for use in trains.

National Control Centre

Number of grid faults

Numerical module

Open-close-open cycle

Overcurrent protection

Optical Ethernet module

On-load tap changer

Disturbance data recording initiated by other event than start/

A term used to describe how the relay behaves during a fault

condition. For example, a distance relay is overreaching when

the impedance presented to it is smaller than the apparent

impedance to the fault applied to the balance point, that is, the

set reach. The relay "sees" the fault but perhaps it should not

have seen it.

Peripheral component interconnect, a local data bus

Pulse code modulation

Protection and control IED manager

Mezzanine card standard

PCI Mezzanine card

1MRK 506 369-UUS -

Line distance protection REL670 2.2 ANSI

Application manual