FIELD: electricity.
SUBSTANCE: device contains connected in-series a verifiable electricity meter, calibrated active load and an alternating current ammeter. At that the above measuring circuit with the verifiable electricity meter of induction type is connected to the alternating current mains through a bidirectional transistor current switch controlled from pulse generator with variable pulse-repetition rate through a high-frequency transformer which separated secondary windings are coupled through current-limiting resistors to control base-emitter junctions of a pair of power transistors back-to-back connected by their collector-emitter junctions as a part of the bidirectional transistor current switch. The pulse generator with variable pulse-repetition rate is connected to a frequency meter.
EFFECT: simplification of calibration device for induction electricity meters.
1 dwg
