FIELD: transport.
SUBSTANCE: invention relates to railroad transport and is focused on creation of system to provide auxiliary drives in rail vehicle with electric energy. System (20) for supplying energy to auxiliary drives (18) via isolating transformer (14) is connected with energy source, e.g. with DC intermediate circuit (7), where the system (20) without intermediate including the current limiting resistor via safety switch (25) is connected with electrical reference potential, primarily with chassis ground of a vehicle. Herewith, safety switch (25) is made capable to perform disconnection when current flow occurs through closed safety switch (25) which current is caused by additional contact of the system (20) with reference potential.
EFFECT: providing reliable protection of auxiliary drives while lowering costs.
10 cl, 2 dwg
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