ABB POLIM-D Manuel d'utilisation - Page 15

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1. Technical Data on the Surge Arrester

ABB

6.2.

Replacement after overloading or damages caused by ani-

mals

Overloading during operation can lead to damaging (e.g. traces of fire, fractures) of

the surge arrester from arcs.

Minimal animal bites on the sheds of the silicone housing (e.g. by birds, martens,

mice etc.) do not hinder the functioning of the surge arrester. Heavy bites do re-

duce the insulation capacity of the silicone housing, however.

Damage to the surge arrester

Damaged surge arresters no longer protect the switchgear.

CAUTION

6.3.

Cleaning in case of heavy pollution

Thanks to the hydrophobicity of the silicone housing, normal pollution does not af-

fect the insulation capacity of the housing. If pollution exceeding this is present

(heavy deposit layer) the surge arrester should be cleaned.

Solvents and abrasive equipment

Damage to the silicone housing.

CAUTION

Doc. 1HC0010173 AB

Check the surge arresters visually on a regular basis to ensure that they are

in sound condition.

Replace surge arresters, when disconnecting device has operated.

Replace damaged surge arresters.

Keep a small percentage of installed surge arresters in reserve.

Do not use cleaning agents containing solvents besides isopropanol

Do not use abrasive equipment for cleaning.

Do not use silicone grease or silicone oil after the cleaning.

Clean surge arresters either with

warm water and soft, lint-free cloths

–

water spray with a maximum pressure of 10 bar

–

soft, lint-free cloths moistened with isopropanol (isopropyl alcohol).

–

Apply on the whole silicone surface

Operating instructions for POLIM

-D surge arrester