Analogue ammeter Э47 150/5A accuracy class 1,5 72х72mm IEK
Used in low-voltage assemblies in residential, commercial and industrial distribution networks.
Э47 ammeters are analogue electromagnetic instruments for measuring current in AC circuits.
They comply with ГОСТ 30012.1, 8711 and 22261, and ГОСТ Р 52319, 51522, 51317.3.2 and 51317.3.3. Manufactured to specification ТУ 4223-023-18461115-2008.
Э47 instruments are included in the State Register of Measuring Instruments and have a measuring instrument type approval certificate.
Operating principle: a circular coil contains movable and fixed cores. Current through the coil creates a magnetic field that magnetises both cores. Like poles repel, causing the movable core to turn the pointer shaft. A metal shield protects the coil and cores against external magnetic fields.