ABB
Operating instructions for POLIM
©
R surge arrester
Doc. 1HC0075743 AA
EN
13
6.
MAINTENANCE, UPKEEP
DANGER
System uses high voltage
Death, serious bodily harm and damage to the switching gear may result from an
electric shock.
Allow only authorised professionals to perform work on the surge arrester.
Observe the safety rules of EN 50110-1 before working on the system:
–
Disconnect the system from the power supply.
–
Secure the system against being switched on again.
–
Ensure that the system is de-energised.
–
Earth the system and short-circuit it.
–
Cover or cordon off neighbouring energised parts.
The surge arresters do not contain wearing parts and are therefore maintenance-
free. Replacement parts are not needed.
6.1.
Replacement after overloading
Overloading during operation can lead to damaging (e.g. traces of fire, fractures) of
the surge arrester from arcs.
Minimal animal bites of the silicone housing (e.g. by birds, martens, mice etc.) do
not hinder the functioning of the surge arrester. Heavy bites do reduce the insula-
tion capacity of the silicone housing, however.
CAUTION
Damage to the surge arrester
Damaged surge arresters no longer protect the switchgear.
Check the surge arresters visually on a regular basis to ensure that they are
in sound condition.
Replace damaged surge arresters.
Keep a small percentage of installed surge arresters in reserve.
