ABB Substation Automation
Products and Systems
User’s Guide
REJ 513
1MRS750613-MUM
61
C
Service
1 General
When the protection relay is operating under conditions specified in section
“Technical data”, the relay is 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,
as to temperature, 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
shall be noted:
•
Signs of mechanical damage on relay, contacts and relay case.
•
Rust spots or signs of corrosion on terminals or case.
If the relay fails in operation or if the operating values differ remarkably from those of
the relay specifications, 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 his nearest representative for further information about checking,
overhaul and recalibration of the relay.
When contacting ABB for ordering service, please state the possible fault code.
Note !
Static protection relays are measuring instruments that should be handled with care
and protected against moisture and mechanical stress, especially during transport.
Summary of Contents for REJ 513
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