SWITCHING DEVICE Russian patent published in 2013 - IPC H03K19/03 G05B23/02 

FIELD: electrical engineering.

SUBSTANCE: in the switching device with "-" and "+" feed bars and n of single-type reserved relay cells consisting of four relays and four isolation diodes, the first, second and third switchable "+" feed bars, the fourth switchable "+" feed bar is introduced with four remote switches with two normally closed contacts, five current sensors, controller. The secondary outputs of windings in each cell are connected respectively to the first, second, third and fourth switchable "+" feed bar; the first, second, third and fourth current sensor is installed respectively at first, second, third and fourth switchable "+" feed bar through which the first normally closed contacts of the first, second, third and fourth remote switch is connected with common "+" feed bar while the fifth sensor is installed at switchable "-" feed bar. Outputs of current sensors are connected to data inputs of the controller which signal inputs trough the second normally closed contacts respectively of the first, second, third and fourth remote switch are connected to the common signal input of the controller.

EFFECT: fault monitoring of the relay in a cell in process of manufacturing and operation.

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