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Operating instructions
| EN | 1HC0076149 AC
5.4
Mounting
5.4.1
System voltage
CAUTION!
Incorrect system voltage.
Damage to the switching gear and the surge arrester.
X
Do not use surge arresters intended for a.c. systems in d.c. systems.
X
Observe the „Application guidelines“ from ABB Switzerland Ltd.
X
Before mounting, ensure that the characteristic data on the rating plate of the surge arrester
matches the requirements of the power system.
X
Ensure that system voltage applied at the terminals of the arrester does not exceed the
maximum permissible continuous operating voltage of the surge arrester.
5.4.2
Installation position
CAUTION!
Deposits on the undersides of sheds.
Conductivity of deposits hinders protective function of the POLIM®-C.
X
Always mount surge arresters in such a way that the sheds point downward.
5.4.3
Minimum distances between surge arresters and earth
The minimum permissible distances between the surge arresters and the earth are specified on the
data sheets supplied with the offer or order confirmation. The values are based on calculations for
unfavourable conditions and include safety margins.
X
Observe national regulations and the rules of the system owner regarding minimum permissible
distances between the surge arresters and the earth.
