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1

DIN EN IEC 60051-4:2022-07

VDE 0411-51-4. Direct acting indicating analogue electrical measuring instruments and their accessories title - Part 4: Special requirements for frequency meters.

VDE 0411-51-4. Direct acting indicating analogue electrical measuring instruments and their accessories title - Part 4: Special requirements for frequency meters.

2

BS EN IEC 60051-4:2021

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

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

3

IEC 60051-4:2018

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

4

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

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

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