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5
Commissioning
5.1
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.
5.2
Electrical check before commissioning
Each surge arrester is tested by the manufacturer. The routine test report is included with the pack-
aging. Additional electrical testing before commissioning is not necessary.
5.3
Installation location and protective distance
DANGER!
Danger of fire and injury via arc with overloading of the surge arrester.
Ignition of flammable materials by an arc and flying burning parts.
X
Do not store flammable materials near the surge arrester.
X
When working near the surge arrester, do not wear easily flammable clothing.
Surge arresters only protect medium-voltage apparatuses when they are located within the protecti-
ve distance. The protective distance is only a few meters.
X
Always mount surge arresters as close as possible to the apparatus to be protected within the
protective distance. The length of the connecting cables are decisive here.
X
In cases of doubt, calculate the protective distance according to the formulas in the „Application
guidelines".
1HC0075079 AB | EN | Operating instructions
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