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Maintenance

Every 2 years

Visual inspection

Expertise of busbar connections, synthetic sleeves and gaskets, insulators, insulating pads, earthing system.

Each 5 years

Minor maintenance

Following to the expertise, change the damaged parts. Proceed with electrical tests (dielectric, insulation, ohmic resistance). Check of topographic elevation of the links.

Each 10 years

Major maintenance

Mandatory replacement : synthetic sleeves or bellows, synthetic gaskets.

Systematically repair : electrical contact surfaces (flexible laminations, braids and adaptators), including the replacement of spring washers.

According to expertise carried out : replacement of the flexible laminations or braids, replacement of the elastomer spring heads of lower insulators.

Replacement of old bolting.