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