MAINS ELECTRIC AND LEAKAGE METER Russian patent published in 2014 - IPC G01R11/24 

FIELD: electricity.

SUBSTANCE: counter of mains electrical energy and leaks contains current sensor 1, the outputs of which are connected with the first current-voltage multiplier 3, which, in turn, is connected to the first current-pulse frequency converter 4, current transformer 5 with two primary windings, one of which is connected with phase conductor of the measurement network, while another one - with a zero conductor and with one secondary winding, on which the signal is proportional to a difference of currents of primary windings, while the outputs of the current transformer 5 are connected to second current-voltage multiplier 6, which, in turn, is connected to the second current-pulse frequency converter 7.

EFFECT: possibility for registering of leaks of electrical energy.

1 dwg