KCEG142 데이터 시트보기 (PDF) - Unspecified
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KCEG142 Datasheet PDF : 22 Pages
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Types KCGG 122, 142
and KCEG 112, 142, 152, 242
Overcurrent Protection
Features
q Compact multi-function numerical
relay
q Versions with integral
directionality (KCEG)
q Serial communications
q Comprehensive protection
functions including:
q 3 stage overcurrent
q 4 stage earth fault
q restricted earth fault
q 9 IDMT curves including IEC,
ANSI/IEEE
q thermal overload alarm and trip
q underfrequency
q undercurrent
q breaker failure
q undervoltage
q rectifier protection
q broken conductor detection
q Two setting groups
q Extensive measurement facilities
q Fault records for the last five faults
q Integral disturbance recorder
accessible from a remote PC
q Integral event recorder accessible
from a remote PC
q Circuit breaker maintenance alarm
q Phase segregated outputs
Figure 1: Relay type KCEG 142
Introduction
The range of overcurrent relays
provides comprehensive protection for
phase and earth faults, together with
measurements, communications,
control and recording facilities.
Within the range, the KCGG relays
provide non-directional overcurrent
and earth fault protection, while the
KCEG relays allow each stage of
protection to be selectively
directionalised.
The relays in the range are designed
to operate with a wide range of ac or
dc auxiliary power supplies. If a
secure supply is not available, the
KCEG242 model can be powered
from either an auxiliary supply (ac or
dc) or from the CT circuit. Thus in the
event of auxiliary supply failure,
tripping functions will remain
operational.
Models Available
KCGG 122
Single phase overcurrent and/or earth
fault relay
KCGG 142
Three phase overcurrent and earth
fault relay
KCEG 112
Directional earth fault relay
KCEG 142
Three phase directional overcurrent
and directional earth fault relay
KCEG 152
Three phase overcurrent and
directional earth fault relay (external
Vo connection)
KCEG 242
Self powered three phase directional
overcurrent and directional earth fault
relay
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