Ralf Gawlista (SEG)
2. Maintenance – Changing the Battery
The relay is buffered by a battery for feeding the LC display as well as for memoriz-
ing fault values and reset of the trip relay. Failure of the battery has no effect on the
protective functions of the relay. The battery has a service life of several years.
The battery is housed underneath the front cover of the relay at the lower right corner
and is fastened by plug terminals.
The following instructions are mandatory for the safe replacement of the bat-
tery.
Before changing the battery on a WIP it is imperative that the complete device is dead
and the following 5 safety regulations are always met:
Hazardous Voltage
Battery contacts behind front cover may cause electric shock.
Disconnect from all power (supply) sources
Secure against reconnection
Verify if the equipment is dead
Connect to ground and short-circuit all phases
Cover or safeguard all live adjacent parts
To Next Page
Loading...
