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Normas BSI – AENOR
BS 89-4:1990, EN 60051-4:1989, IEC 60051-4:1984

BS 89-4:1990, EN 60051-4:1989, IEC 60051-4:1984

Direct acting indicating analogue electrical measuring instruments and their accessories. Specification for special requirements for frequency meters

Fecha Anulación:
2021-05-07 /Withdrawn
Comité:
PEL/85
Equivalencias internacionales:

EN 60051-4:1989

IEC 60051-4:1984

Relación con otras normas BSI:

Reemplaza a: BS 89:1977

Reemplazada por: BS EN IEC 60051-4:2021

Keywords:
Working range, Overvoltage tests, Marking, Meters, Grades (quality), Electrical tolerances, Electrical testing, Analogue signals, Electrical measuring instruments, Electric terminals, Accessories, Errors, Signal devices, Electrical wave measurement, Frequency measurement
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