FIELD: electricity.
SUBSTANCE: electricity metre comprises metering voltage transformer, inputs of which are connected in parallel to load, and outputs are connected to inputs of voltage sensor. Inputs of metering transformer are connected into wire splitting serially with load, and outputs are connected to inputs of current sensor. The first two inputs of metering-calculating information unit are connected to outputs of current sensor, the second two inputs are connected to outputs of voltage sensor, the third two inputs are connected to outputs of power supply source, and outputs of unit are taken out for external connection. Counter is equipped with additional current transformer, inputs of which are connected serially with inputs of metering current transformer into wire splitting serially with load, and outputs - with inputs of power supply inputs.
EFFECT: improved accuracy of measurements.
1 dwg
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