IS 4064 Pt.1-1978

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标准号:IS 4064 Pt.1-1978
发布日期:1979/6/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:1.1 This standard ( Part I) covers general requirements and tests for air-break switches, air-break disconnectors, air-break switch-disconnectors and fuse-combination units to be used in distribution circuits and motor circuits the rated voltage of which does not exceed 1 000 V ac or 1 200 V dc.Note 1 — Depending on its design, a switch ( or disconnector ) can be referred to as ' rotary switch ( disconnector ) ', ' cam-operated switch ( disconnector) ', ' knife-switch ( disconnector ) ', etc.Note 2 — If they are not manually operated switches and disconnectors, they may have to comply with additional requirements.1.2 Any fuses incorporated shall conform to the requirements laid down in the relevant Indian Standards.1.3 This standard ( Part I ) does not cover the equipment coming within the scope of Indian standards on:a) circuit breakers,b) contactors,c) motor starters, andd) control switches.1.4 This standard (Part I) also does not include the additional requirements necessary for electrical apparatus for explosive gas atmospheres.Note — In this standard, switches, disconnectors, switch-disconnectors and fusecombination units will be referred to as ' equipment'.

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