Direct acting indicating analogue electrical measuring instruments and their accessories. Part 2: Special requirements for ammeters and voltmeters— 21 стр.
Applies to direct acting indicating ammeters and voltmeters having an analogue display, and to non-interchangeable accessories used with ammeters and voltmeters.
17.220.20 Measurement. Including measuring instruments, instrument transformers / Измерения электрических и магнитных величин. Включая измерительные приборы, измерительные трансформаторы
