DEVICE FOR TESTING CURRENT PROTECTION Russian patent published in 2023 - IPC H01H85/30 G01R31/00 

FIELD: electrical engineering.

SUBSTANCE: invention is related to devices for testing the current protection of electrical equipment, namely circuit breakers. The device contains a thyristor device, a current measuring transducer, the input circuit of which, together with the current protection device under test, forms a test current circuit, a control controller connected by an information input to the current measuring transducer, a cascade of supercapacitors is used as a source of test current, containing balancing boards connected in parallel to each supercapacitor, the output of the supercapacitor cascade is connected to the input of a current measuring transducer, made in the form of a shunt, the input of the supercapacitor cascade is connected to the output of a thyristor device, made in the form of a power switch, the thyristors of which are connected in parallel, the input of the thyristor device is connected to the output of the device under test, the output of the current measuring transducer connected to the input of the device being tested, there is a charging unit, the output of which is connected to the input and output of the supercapacitor cascade, the input of the charging unit is connected to the industrial network.

EFFECT: increase in the accuracy of testing current protection designed for high power circuit breakers.

1 cl, 1 dwg