The moving-iron panel meters are mainly used for measuring AC currents and voltages in the frequency range of 15 … 100 Hz. They indicate the rms value of the wave, even with high harmonics, with a minor ininfluence on the accuracy. Our instruments are normally calibrated for sinusoidal AC. For current above 100A or high voltages, the instruments must be connected through measuring transformers.
Movin iron instruments can be connected in any order without observation of polarity (ki) on the current transformer.
Scale - 90º
Class - 1.5
Dimensions in mm - 48 x 48 / 72 x 72 / 96 x 96 / 144 x 144
DIN Rail - EQ35
Electical Data
Overload capacity according to DIN 43780
Continuously 1,2 times rated value
Short duration 10 x IN 5 s in ammeters 2 x UN 5 s in voltmeters
The setting time is approximately 1 minute.
Consumption
Ammeters up to 15 A 0,5 VA
Ammeters more than 15 A 0,8 VA
Voltmeter between 1 – 4,5 VA
Moving iron instruments
Moving-iron movement with silicone oil damping. Pivot suspension with spring loaded jewel bearings for vibration and shock resistance.
Scales
90º scale, cmpressed at the beginning. Coarse-fine division. For ammeters with overload scaling, it covers between 10% (for 1,2In) y el 35% (for 5In) of the total scale lenght