CEA notifies guidelines for validity of type tests for transmission equipment

The Central Electricity Authority (CEA) has notified guidelines for the validity period of type tests conducted on major electrical equipment in power transmission. As per the CEA, at present, national/international standards do not specify any validity period for type test results. Ideally, repetition of type tests on the equipment is not desirable so long as there is no change in the basic design or technology, mechanical construction including physical dimensions material, functionality of the equipment and performance. However, some utilities insist on repetition of type tests after a reasonable period of time to ensure that equipment quality, performance and reliability are being maintained. The frequency of repetition of type tests by Indian utilities, even if the equipment has remained essentially the same, has become a matter of concern as it varies from utility to utility. The CEA’s current set of guidelines attempts to address these issues.

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