GB/T 7676.1-2017 Direct acting indicating analogue electrical measuring instruments and their accessories—Part 1:Definitions and general requirements common to all parts

Scope

This part of GB/T 7676 specifies the terms and definitions, classification, grading, general technical requirements, information, markings and symbols, packaging and storage, and inspection rules for direct-acting analog indicating electrical measuring instruments and their accessories. This part applies to direct-acting analog indicating electrical measuring instruments, such as: -- ammeters and voltmeters; -- power meters and reactive power meters; -- pointer and vibrating spring frequency meters; -- phase meters, power factor meters, and synchronous indicators; -- resistance meters (impedance meters) and conductivity meters; -- multi-functional instruments in the above forms; This part also applies to: -- certain accessories used with the above instruments, such as: ● shunts; ● series resistors and impedance devices; ● Hall current sensors; ● Hall voltage sensors; ● electronic converters. -- instruments and accessories when used together with the instruments and adjusted in a combined state. -- direct-acting analog indicating electrical measuring instruments whose scale lines are known but not directly corresponding to the input power. -- instruments and accessories with electronic devices in their measurement and/or auxiliary circuits. GB/T 7676 does not apply to: -- special-purpose instruments specified by corresponding national standards; -- special-purpose devices specified by corresponding national standards for use as accessories. This part does not specify the dimensional requirements for instruments or accessories.

Development Information

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