COMBINED OVERCURRENT AND EARTH FAULT RELAY Description and Specifications for Lab Tenders
COMBINED OVERCURRENT AND EARTH FAULT RELAY
module with insulated
panel, combined over-current & earth fault relay with programmable
time-current curves suitable for protection of power distribution systems with
insulated, resistance earthed or compensated neutral.
It must be provided with
three phase-fault elements, three earth fault elements, time current curves
selectable according to IEC/IEEE standards, a breaker failure protection, a
trip circuit breaker control via serial port, a blocking output and blocking
input for pilot wire selectivity coordination, a time tagged multiple event recording,
oscillographic wave form capture, modbus RTU / IEC870-5-103 communication
Protocols, display LCD 16 (2x8) characters, optional expansion input/output
modules, rated input current selectable 1A or 5A, 50/60 Hz. 3rd harmonic filter
on the neutral input current..
4 mm. safety terminals and
2 mm. terminals included on the front panel for the electrical connection.