ABB REF601 Manual del producto - Página 6

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Feeder Protection

REF601 IEC

Product Version: 1.0

12. Non-volatile memory

With non-volatile memory, relay retains fault data,

even after auxiliary power failure. The relay is

inherently reliable and features excellent immu-

nity to external electromagnatic interference.

13. Communication

The relay is available with optional communica-

tion feature. Modbus RTU protocol is supported

on RS-485 bus with four wire connection. This

allows relay to connect to control and monitoring

system through serial communication for remote

monitoring.

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