E47 ammeter (without scale) accuracy class 1.5 72x72mm IEK

Used in low-voltage complete devices in electrical distribution networks of residential, commercial and industrial facilities. E47 ammeters with replaceable scales - analogue electromagnetic electrical measuring instruments - are designed to measure current in AC electrical circuits. Meets the requirements of GOST 30012.1, 8711, 22261; GOST R 52319, 51522, 51317.3.2, 51317.3.3 and manufactured according to technical specifications TU 4223-023-18461115-2008. Operating principle: E47 ammeters are devices with an electromagnetic system. They consist of a round coil with movable and stationary cores placed inside. When current flows through the turns of the coil, a magnetic field is created that magnetizes both cores. As a result, the like poles of the cores repel, and the movable core turns the axis with the arrow. To protect against the negative influence of external magnetic fields, the coil and cores are protected by a metal shield. The device is purchased without scales; replacement scales are purchased separately.