IS 8623-1977

标准号：IS 8623-1977
发布日期：1978/3/1 12:00:00
实施日期：1999/12/31 12:00:00
适用范围：1.1 This standard covers factory-built assemblies of switchgear and controlgear the rated voltage of which does not exceed 1 000 V ac at frequencies not exceeding 1 000 Hz, or 1 200 V dc ( For higher frequen-cies, special consideration may be necessary ). It applies to stationary or movable factory-built assemblies with or without enclosures.Note — Additional requirements for busbar trunking systems are not covered in this standard.1.2 This standard covers factory-built assemblies designed for use under special service conditions, such as in ships, in railway vehicles, for hoisting equipment, in explosive atmospheres, and for domestic ( household ) applications, provided that the relevant additional requirements are complied with.1.3 Individual devices and self-contained components, such as motor starters, fuse-switches, electronic equipment, etc, shall comply with the relevant Indian Standard and are in this respect not covered by this standard.Note — Wherever no Indian Standard is available the requirements shall be as agreed to between the manufacturer and the purchaser.