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Device for measuring in metric units (kWh), used for direct measurement of active power in a three-phase system. A special electronic circuit indicates, under the influence of flowing current and applied voltage in each phase, pulses in a quantity proportional to the electrical energy consumed in that phase. The energy consumption in the phase is signaled by the blinking of the corresponding LED. The sum of the pulses from the three phases is converted into energy consumed in the whole three-phase system, and its value is displayed on an LCD display (number of digits 6+1). Power supply: 3 × 230V~, 50Hz, base current: 20A, max. current: 120A, pulse frequency: 1000imp/kWh, additional button: resetting the peak load power consumption of the measuring circuit in the last 30 minutes from the loading activation, measurement accuracy: class 1, mounting on a 35 mm rail.
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