FIELD: electricity.
SUBSTANCE: proposed is a device for verification of inductive active energy electric metres which contains an operating capacitor charged from the electric mains via a HF commutator and discharged immediately back into the mains; the capacitor capacity is selected based on power consumed as unaccounted. One of the operating capacitor poles is connected to the electric mains phase and neutral conductors via alternatively controlled power transistors, the other pole connected via alternatively commutating bidirectional thyristors parallel whereto filtering capacitors are joined up. Two additional commutating bidirectional thyristors are used in the operating capacitor discharge circuits, alternating activation of all the power transistors and bidirectional thyristors is performed by the control unit connected to them, such control unit operation synchronised by the electric mains signal.
EFFECT: evaluation of active energy electric metre protection against eventual uncontrolled electric energy stealing.
2 dwg
