标准号:IS 8468-1977
发布日期:1978/1/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:1.1 This standard covers on-load tap-changers for power transformers, and their motor-drive mechanisms. It relates mainly to oil-immersed tap-changers.1.2 Tap-changers for transformers for railway rolling stock are not covered by this standard.Note 1 — As this standard deals only with on-load tap-changers the expression is shortened to 'tap-changer' in the remainder of this standard.Note 2 — For the purpose of this standard a synthetic insulating liquid, for example, askarel is regarded as an oil.