10
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Operating instructions
| EN | 1HC0075079 AB
6
Maintenance, upkeep
6.1
Safety
DANGER!
System uses high voltage.
Death, serious bodily harm and damage to the switching gear may result from an electric shock.
X
Allow only authorised professionals to perform work on the surge arrester.
X
Observe the safety rules of EN 50110-1 before working on the system:
à
Disconnect the system from the power supply.
à
Secure the system against being switched on again.
à
Ensure that the system is de-energised.
à
Earth the system and short-circuit it.
à
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.
6.2
Replacement after overloading
Overloading during operation can lead to damaging (e.g. traces of fire, fractures, thrown out pieces)
of the surge arrester from arcs.
CAUTION!
Damage to the surge arrester.
Damaged surge arresters no longer protect the switchgear.
X
Check the surge arresters visually on a regular basis to ensure that they are in sound condition.
X
Replace damaged surge arresters.
X
Keep a small percentage of installed surge arresters in reserve.
