IS 722 Pt.1-1977

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标准号:IS 722 Pt.1-1977
发布日期:1977/12/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:This standard (Part I ) specifies the general requirements and tests for all types of ac electricity meters of induction type of accuracy Class 0·5, 1, 2 and worse, for the measurement of alternating current electrical energy (active, reactive or apparent) of a frequency in the range 40 to 60 Hz.1.2 It does not apply to:a) meters for testing purposes such as, rotating sub-standard;b) special types of meters such as, multi-rate meters; andc) measuring devices such as those used for telemetering.

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