Service; General; Commissioning Testing; Function Test - ABB REJ 525 Operator's Manual

REJ 525
5.
5.1.
5.2.
5.2.1.
26
Combined Overcurrent and Earth-Fault Relay
Operator's Manual

Service

General

When the protection relay is operating under the specified conditions (refer to the
Technical Reference Manual, sections Requirements and Technical data), the relay
will be practically maintenance-free. The relay includes no parts or components
subject to abnormal physical or electrical wear under normal operating conditions.
If the environmental conditions at the relay operating site differ from those
specified, e.g. temperature and humidity, or if the atmosphere around the relay
contains chemically active gases or dust, the relay ought to be visually inspected. At
the visual inspection the following should be noted:
• Signs of mechanical damage on the relay, contacts and relay case.
• Rust spots or signs of corrosion on the terminals or case.
If the relay fails in operation or if the operating values differ remarkably from the
specified values, the relay is to be given a proper overhaul. All major measures
involving overhaul of electronics are to be taken by the manufacturer. Please contact
the manufacturer or the nearest representative for further information about
checking, overhaul and recalibration of the relay.
When contacting ABB for ordering service, please give a description of the fault and
state the possible fault code.
1RWH
Static protection relays are measuring instruments which should be handled with
care and protected against moisture and mechanical stress, especially during
transport. If stored for a longer period of time, the surrounding temperature of the
relay should be kept stable.

Commissioning testing

Function test

The test mode is accessible via "FUNCTION TEST/BI" under
"CONFIGURATION" in the HMI menu. In the test mode, all internal signals from
the different protection stages can be activated one by one, the self-supervision
included. The internal signals are routed to the output contacts according to the SGR
switchgroups.
1. Enter the test mode by pressing the [E] button and select the wanted signal with
→ ←
the [ ] or [ ] button.
2. To activate the signal, press the [E] button. The signal will remain active for as
long as the [E] button remains pressed.
3. To leave the test mode, press the [C] button.
1MRS 752137-MUM