Cutoff device and cutoff method for preventing electrification of primary equipment during relay protection debugging of substation
A technology of primary equipment and cut-off device, which is applied in the direction of circuit device, emergency protection circuit device, electronic protection circuit test, etc., can solve the problems of primary equipment false electrification, voltage transformer secondary winding, etc., to eliminate electrification and eliminate potential safety hazards , to meet the effect of remote test operation
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[0016] The present invention is described in detail below according to accompanying drawing:
[0017]A cut-off device for preventing substation relay maintenance and debugging primary equipment from being electrified, including a primary winding 2 and a secondary winding 3 of a voltage transformer 1, and one end of the secondary winding 3 passes through the first connecting piece 4, the air switch 8 and the third connecting piece in sequence. The sheet 6 is connected with one end of the relay protection device 10, and the other end of the secondary winding 3 is connected with the other end of the relay protection device 10 through the second connecting sheet 5 and the fourth connecting sheet 7 in sequence. A relay protection tester 9 is connected between the outer connection terminal of the connecting piece 6 and the outer connection terminal of the fourth connecting piece 7, and the relay protection tester external power supply 29 is connected to the relay protection tester 9....
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