EN 60051-5:1989 Direct Acting Indicating Analogue Electrical Measuring Instruments and Their Accessories Part 5: Special Requirements for Phase Meters, Power Factor Meters and Synchroscopes
European Committee for Electrotechnical Standardization(CENELEC)
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EN 60051-5:1989
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1989EN 60051-5:1989 Direct Acting Indicating Analogue Electrical Measuring Instruments and Their Accessories Part 5: Special Requirements for Phase Meters, Power Factor Meters and Synchroscopes