IEC 60051-4*CEI 60051-4

Direct acting indicating analogue electrical measuring instruments and their accessories. Part 4 : Special requirements for frequency meters

1984-00-00

Có hiệu lực

DIN EN 60051-4 (1991-11), IDT * 88/33509 DC (1989-01-20), IDT * BS 89 (1977-04-29), NEQ * BS 89-4 (1990-08-31), IDT * GB/T 7676.4 (1998), IDT * EN 60051-4 (1989-11), IDT * NF C42-103 (1986-05-01), IDT * NF C42-103 (1990-02-01), IDT * JIS C 1102-4 (1997-10-20), IDT * SEV-ASE 3007-4 (1985), IDT * OEVE EN 60051-4 (1990-01-09), IDT * PN-E-06501-04 (1992-09-30), IDT * PN-EN 60051-4 (1998-12-28), IDT * SS-EN 60051-4 (1999-08-20), IDT * UNE-EN 60051-4 (1993-12-29), IDT * GOST 7590 (1993), IDT * TS 5592 (1988-03-15), IDT * TS 5592 EN 60051-4 (1997-04-16), IDT * NEN 10051-4, IDT * STN EN 60051-4 (2001-10-01), IDT * CSN IEC 51-4 (1992-08-01), IDT * DS/EN 60051-4 (1996-04-16), IDT * NEN 10051-4:1991 en;fr (1991-01-01), IDT

IEC 60051-4*CEI 60051-4 (1984)

Direct metering * Electrical engineering * Electrical measuring instruments * Frequency measurement * Frequency meters * Indications * Indicators * Measurement * Measuring instruments * Meters * Precision * Scales * Specification (approval) * Analogue indication * Analogue measurements

17.220.20. Ðo các đại lượng điện và từ

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