Prüfungen an Gasaußendruckkabeln und Garnituren für Wechselspannungen bis einschließlich 275 kV (Um = 300 kV)
Norm-Titel, englisch
Tests on external gas-pressure (gas compression) cables and accessories for alternating voltages up to and including 275 kV (Um = 300 kV)
Norm-Titel, französisch
Essais des câbles à pression de gaz externe (à compression de gaz) et de leurs dispositifs accessoires pour des tensions alternatives inférieures ou égales à 275 kV (Um = 300 kV)
HD 635 applies to tests on radial-field impregnated-paper insulated cables and accessories which, during normal operation, work under a gas pressure exceeding 1200 kPa (12 bar) applied outside a sheath or jacket, so that the gas is not in direct contact with the insulation. The tests are applicable to cables and accessories intended to be used in systems with a nominal voltage not exceeding 275 kV between phases.