Feeder protection relays

Technical Reference Manual

REF610 1MRS755310* Two galvanically isolated digital inputs and three additional galvanically isolated

digital inputs on the optional I/O module.

Two galvanically isolated digital inputs and three additional galvanically isolated digital inputs on optional

I/O modules

* Interference logger:

* Recording time up to 80 seconds.

* Triggered by one or more internal or digital input signals

* Records four analog channels and up to eight user-selectable digital channels

* Adjustable sampling rate

* Non-volatile memory for

* Up to 100 time-stamped event codes

* Set values

* Interference logger data

* Time-stamped logging data for the last five events

* Number of AR shots and protection phase starts/trips

* Operating indication messages and LEDs showing status in case of power failure