DS DS/EN 60051-5
DS DSEN 60051-5 1995-DEC-07 Drect actng ndcatng analogue electrcal measurng nstruments and ther accessores - Part 5 Specal requrements for phase meters power factor meters and synchroscopes
DS DSEN 60051-5 1995-DEC-07 Drect actng ndcatng analogue electrcal measurng nstruments and ther accessores - Part 5 Specal requrements for phase meters power factor meters and synchroscopes
Part 5 of this standard applies to direct acting analogue phase meters, power factor meters and synchroscopes. This part also applies to non-interchangeable accessories used with phase meters, power factor meters and synchroscopes. This part also applies to a phase meter or power factor meter whose scale marks do not correspond directly to its electrical input quantity, provided that the relationship between them is known.