This standard applies to direct acting indicating electrical measuring instruments having an analogue display, such as: - ammeters and voltmeters; - wattmeters and varmeters; - frequency meters of pointer and vibratin...
详细信息
标准号:
BS EN 60051-1-1999
This standard applies to direct acting indicating electrical measuring instruments having an analogue display, such as: - ammeters and voltmeters; - wattmeters and varmeters; - frequency meters of pointer and vibrating-reed types; - phasemeters, power-factor meters and synchroscopes; - ohmmeters, impedance meters and conductance meters; - multi-function instruments of the above types. It also applies to certain accessories used with these instruments, such as: - shunts; - series resistors and impedance elements. If other accessories are associated with instruments, this standard is applicable to the combination of the instrument and the accessory provided that the adjustments have been made for the combination. This standard also applies to a direct acting indicating electrical measuring instrument whose scale marks do not correspond directly to its electrical input quantity, provided that the relationship between them is known. This standard also applies to instruments and accessories having electronic devices in their measuring and/or auxiliary circuits. This standard does not apply to special purpose instruments which are covered by their own IEC standards. This standard does not apply to special purpose devices which are covered by their own IEC standards when they are used as accessories. This standard does not contain either requirements for protection against environmental conditions or the relevant tests. However, when necessary, and then only by agreement between the manufacturer and the user, tests to approximate the conditions of use may be selected from IEC 60068. This standard does not specify requirements concerning dimensions of instruments or accessories (for the former, see IEC 60473).
この規格は,三相3線式及び三相4線式回路において,計器用変成器と組み合わせて使用する無効電力量計及び電流合成方式の多回路を総合計量する無効電力量計並びにこれらの発信装置付無効電力量計(以下,計器という.)について規定する。なお.この規格で規定する事項のほかは,JIS C 1210による。また,付加装置を備えた計器では,その無効電力量計部分に対し,付加装置を付加した状態の下で,この規格を適用する。この規格において,多回路総今計器と組み合わせで使用する多回路総合計器用変流器については,附属書1及び変成器との組合せと総合誤差の許容限度については.附属書2による。
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