EP2 ammeter, voltmeter EP2
Also this device can be called: EP-2, EP 2.
EP2 ammeter, EP2 voltmeter is a portable device technical one-limit electromagnetic system and is intended respectively for measuring voltage and current in AC circuits 50 Hz.
EP2 ammeters, EP2 voltmeters are used for measurements with a low degree of accuracy in the laboratory and workshop practice, as well as the installation of electric and radio equipment.
Accuracy class - 1.5.
Limits of measurement - from 0 to 20 A; from 0 to 600 V.
The basic error of measurement at normal temperature - not more than ±1,5% of full-scale.
Change readings caused by changes in ambient temperature 10° C - not more than ±1,2%.
Measurement limits EP2:
Operating position - horizontal.
Dielectric strength - 2 kV.
Calming the movable part of the device - magnetic induction.
Arrow shape - rod-like.
Dimensions - 165×165×95 mm.
Ammeter weight - 1.3 kg.
Operating conditions EP2:
The ambient air temperature - from -20° C to +50° C.
Relative humidity - 80%.
Ammeters, voltmeters constructively arranged in rectangular plastic case with leather carrying handle and a removable top cover. To eliminate the influence of external magnetic fields measuring mechanism is enclosed in a screen.
EP2 measuring mechanism comprises a circular stationary coil and disposed inside two cores of permalloy or electrical steel, one of which is fixed and the other together with an arrow fastened on a movable axis. When current flows through the coil both cores are magnetized with the same polarity, and pushing each other, creating a rotating rotation moment. Counteracting moment creates a spring spiral.
The manufacturer guarantees the conformity of devices existing technical requirements EP2, when the conditions of operation, transportation and storage.