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High-voltage switchgear and controlgear -- Capacitive current switching capability of air-insulated disconnectors for rated voltages above 52 kV
This technical report applies to high-voltage air-insulated disconnectors for rated voltages above 52 kV.
The report describes the capacitive current switching duty and provides guidance on laboratory testing to demonstrate the switching capability.
Air-insulated disconnectors equipped with auxiliary interrupting devices are included under this scope.
NOTE For manually operated disconnectors, the in-service safety of the operator should be considered and it should be recognized that the results of the switching tests described herein (performed using motor-operated disconnectors) are not necessarily representative of the performance of such disconnectors in actual service.
Due diligence should be exercised if the switching tests indicate that prolonged arc durations are probable.
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