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3.
Product overview
3.1.
Use of the relay
The feeder protection relay REF 610 is a versatile multifunction protection relay
mainly designed to protectincoming and outgoing feeders in a wide range of feeder
applications.
The relay is based on a microprocessor environment. A self-supervision system
continuously monitors the operation of the relay.
The HMI includes a liquid crystal display (LCD) which makes the local use of the
relay safe and easy.
Local control of the relay via serial communication can be carried out with a
computer connected to the front communication port. Remote control can be carried
out via the rear connector connected to the control and monitoring system through
the serial communication bus.
3.2.
Features
*
Three-phase non-directional overcurrent protection with definite-time or IDMT
characteristic, low-set element.
*
Three-phase non-directional overcurrent protection, high-set element
*
Three-phase non-directional overcurrent protection, instantaneous element
*
Non-directional ground-fault protection with definite-time or IDMT
characteristic, low-set element
*
Non-directional ground-fault protection, high-set element.
*
Phase discontinuity protection
*
Three-phase thermal overload protection for cables
*
Arc protection:
*
Two lens sensors for arc detection (optional)
*
Automatic reference level adjustment based on backlight intensity
*
Arc detection via a remote light signal
*
Automatic reclosing 1...3 shots
*
Circuit-breaker failure protection
*
Trip counters for circuit-breaker condition monitoring
*
Trip-circuit supervision with possibility to route the warning signal to a non-trip
output
*
Trip lockout function
*
Four accurate current inputs
*
User-selectable rated frequency 50/60 Hz
*
Three normally open trip contacts
*
Two change-over (form c) non-trip contacts and three additional change-over
(form c) non-trip contacts on the optional I/O module
*
Output contact functions freely configurable for wanted operation
Feeder Protection Relay
Operator's Manual - ANSI Version
REF 610
REF 610
1MRS755539
