ABB MWD Panduan Petunjuk Pengoperasian - Halaman 14
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6.2
Cleaning in case of heavy pollution
Thanks to the hydrophobicity of the silicone housing, normal pollution does not affect
the insulation capacity of the housing. In case of excessive pollution (heavy deposit layer)
the surge arrester should be de-energised and then cleaned (see chapter 6.1 for safety
precautions).
CAUTION!
Solvents and abrasive equipment
Damage to the silicone housing
Do not use cleaning agents containing solvents other than isopropanol.
X
Do not use abrasive equipment for cleaning.
X
Do not use silicone grease or silicone oil after cleaning.
X
Do not immerse the entire surge arrester into a cleaning bath.
X
Clean the surge arresters either with:
X
à Warm water and soft, lint-free cloths,
à Water spray with a maximum pressure of 400 kPa,
à Soft, lint-free cloths moistened with isopropanol (isopropyl alcohol).
Clean the entire silicone surface.
X
6.3
Replacement after overloading or damages caused by animals
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 impair the functioning of the surge arrester. However, heavy bites do reduce the
insulation capacity of the silicone housing.
CAUTION!
Damage to the surge arrester
Damaged surge arresters no longer protect the equipment.
Check the surge arresters visually on a regular basis to ensure that they are in sound
X
condition.
Replace damaged surge arresters.
X
Replace the surge arresters when the disconnecting device has operated.
X
Keep a small quantity of surge arresters in reserve.
X
6.4
Disconnecting device
The disconnecting device, if installed, does not need any maintenance.
DANGER!
Tripping of disconnecting device
Risk of injury due to inappropriate handling.
Do not expose the disconnecting device to temperatures above 60 °C (for exceptions, see
X
specific product documentation).
Never try to open the disconnecting device.
X
Do not connect any voltage/energy source to the terminals of the disconnecting device.
X
14 |
Operating instructions | EN | 1HC0141361 AA