FIELD: electricity.
SUBSTANCE: contact network of each path with two air gaps is connected by two breakers to common busbars of sectioning post. The first breaker connects the beginning of the first air gap, and the second breaker - end of the second air gap with common busbars. Common busbars are connected by link with any point of contact network between the first and second air gaps. The third breaker is included into link break, position of the first and second breakers is detected, and if both are connected, the third breaker is connected, position of the first and second breakers is monitored, as well as availability of current in circuit of the third breaker, and if the first and second breaker trips, and current is available in the circuit of the third breaker, the third breaker is disconnected.
EFFECT: improved reliability of contact network operation.
2 cl, 2 dwg
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