EARTH FAULT RELAY DP-31

Features

– True RMS Measurement with SPARC1 and
DCOI2 Algorithm

– Fundamental Signal Detection3

– Real Time Display of Earth Fault in %

– 6 Selectable IDMT Graphs + 1 DTL

– Fault / lo-set & hi-set Trip LED Indication

– Fault Start Event Recording &
LED Indication + Output4

– Pre-Alarm LED Indication + Output4

– Trip Event Memory
(non-volatile 7 previous records)

– Fault Start Event Memory
(non-volatile 4 previous records)

– Programmable Relay Output Contacts

– Last Trip Elapsed Time (up to 99days)

– Software Lock to Prevent Unauthorized Setting

– Complies with IEC-60255-26 Standards

– ANSI Code: 50N, 51N

– External Plug-in Module for :-
A-01s (RS-485 MODBUS RTU) isolated type