标准号:IS 4237-1982
发布日期:1983/8/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:1.1 This standard covers the general requirements and tests common to all types of switchgear and controlgear for use on systems not exceeding 1 000 V ac or 1 200 V dc.1.2 Unless specified otherwise, the equipment shall be suitable for use for a reference ambient temperature of 40°C. The reference ambient temperature and service condition are indicated in Appendix A.