标准号:IS 9920 Pt.2-1982
发布日期:1982/12/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:This standard ( Part II) covers the rated characteristics of switches and switch-disconnectors (isolators) for use on system voltages above 1 000 V ac.Note — For detailed scope of this series of standards on switches and switch disconnectors, see 1 of Part I of this standard.