Direct acting indicating analogue electrical measuring instruments and their accessories. Part 5: Special requirements for phase meters, power factor meters and synchroscopes— 19 стр.
Direct acting indicating analogue electrical measuring instruments and their accessories. Definitions and general requirements common to all parts— 58 стр.
Corrigendum 1 - Classification of environmental conditions - Part 3-3: Classification of groups of environmental parameters and their severities - Stationary use at weatherprotected locations— 0 стр.
Classification of environmental conditions. Classification of groups of environmental parameters and their severities, Microclimates inside products— 16 стр.
