FIELD: transport.
SUBSTANCE: invention relates to sectionalisation of overhead system for servicing dual-supply electric locomotives. Overhead system sectionalisation circuit serves to check up operation of electric equipment supplied from both 3 kV DC and 25 V AC power supplies, and to inspect overhead equipment. Servicing system comprises insulators inhibiting creation of galvanic connections by pantograph collectors of other overhead system electric locomotives upraised above depot traction paths and overhead system section, given both are supplied from various power sources or overhead system section is connected to the ground.
EFFECT: higher reliability.
4 cl, 3 dwg
