COMBINED NETWORK PROTECTION Russian patent published in 2014 - IPC H02H9/04 H02H3/20 

FIELD: electricity.

SUBSTANCE: invention is related to the area of electric engineering; it comprises a module of voltage limiters (MVL), input, intermediate and output power keys (PK), a choke, the second diode, control and monitoring module (CMM), an input fuse, positive and negative inputs and positive and negative outputs. During implementation of failure and damage protection stage-by-stage dissipation of excessive energy is made by shunting and dissipating facilities with load connected to the network, and when limit values of the dissipated energy are reached protection is made by disconnection of the combined network protection from the mains.

EFFECT: potential use of thirystors as power keys.

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