FIELD: electricity.
SUBSTANCE: 110 kV (and higher) switching device contains three-phase busbar with an individual relay protection and automation set with connected to it phase-by-phase switches, and also breakers between each switch and the respective phase conductor of outgoing overhead power transmission line. Note that each of the named switches is connected to the respective phase conductor of the busbar through the additional circuit breaker with the automatic drive.
EFFECT: improvement of reliability of power supply of the consumers powered by single-circuit power line.
3 cl, 1 dwg
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