FIELD: instruments for electric fault detection. SUBSTANCE: device provides automatic resume of device operations after their test when they are adversely affected in part. Locking circuits of output relays are divided into two groups. Test set is also divided into main and redundant. Device provides possibility to test when devices are partly switched off, to prohibit test when devices are switched off completely, to perform additional test when devices are switched on. Device provides dialog between automatic control system and control device. These goals are achieved by shift register with redundant number of outputs for initiation of protection, button for cycle skip, delay gates and differentiating circuits, as well as additional group of output relays and additional input for cycle skip register. EFFECT: increased functional capabilities. 1 dwg
