FIELD: electricity.
SUBSTANCE: according to the first version the unit contains the first-fourth current sensors (CS) for phases A, B, C and neutral wire N, the first and second temperature sensors, a square-wave generator (SWG), a microcontroller (MC), a register, a digital indicator (DI), the first and second receiver-transmitters, a read-only memory (ROM), a computer; according to the second version the unit contains the first-fourth CSs, the first-fifth temperature sensors, SWG, MC, a register, DI, the first and second receiver-transmitters, ROM, a computer.
EFFECT: expanding functionality of the unit due to permanent control and registration of power loss effect from each harmonic component of load current.
2 cl, 2 dwg
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