FIELD: electrical engineering.
SUBSTANCE: invention relates to power supply devices of railway transport, and in particular, to power supply to section of AC contact network. Secondary voltage transformer is introduced into division post bus for voltage control by two voltage transformers of two directions of contact network section and switch with electromagnet of connection and current transformers equipped with protection and automation unit, as well as unit for determination of passing short circuit in contact network, connected to two voltage transformers. At passing short circuits in contact network command is given to switch on.
EFFECT: shorter state of the disconnected position of the partitioning station in an emergency situation.
1 cl, 1 dwg
