Product overview

3.1 Purpose of the relay

The feeder protection relay REF610 is a multifunctional protection relay primarily used to protect incoming and outgoing lines in various feeder applications.

The relay is based on a microprocessor environment. A self-monitoring system continuously monitors the operation of the relay.

The human-machine interface includes a liquid crystal display (LCD) that makes local use of the relay safe and easy.

The relays can be controlled locally via serial communications from a computer connected to the front communication port.

Remote control is available through a serial communications bus connected to the rear connector of the control and monitoring system.

3.2. Features

* Three-phase non-directional overcurrent protection with timing or IDMT characteristics and low rectification phase.

* Three-phase non-directional overcurrent protection, high rectification phase

* Three-phase non-directional overcurrent protection, instantaneous stage

* Non-directional ground fault protection with timing or IDMT characteristics, low setting stage

* Non-directional ground-fault protection, high-calibration phase.

* Phase discontinuity protection

* Three-phase cable thermal overload protection