EQUIPMENT FOR CHARGE OF ACCUMULATOR BATTERY IN SYSTEM OF MAIN CROSSING OVER ELECTRIFIED RAILWAY Russian patent published in 2010 - IPC F16L7/00 H01M10/44 

FIELD: electricity.

SUBSTANCE: here is disclosed equipment for recharge of accumulator battery in system of main (M) crossing over electrified railroad with facilities of electro-chemical protection from effect of stray currents in circuit "M-rail". The equipment consists of a block of a primary shielding from over voltage including diode. Additionally it consists of a block of a lightning guard and in series connected block of the secondary shielding from over voltage, a conversion block, a block of galvanic isolation and a block of accumulator battery charge. Also the block of the secondary shielding is made in form of a relay and a source of control current with its output connected to an input of the relay. Notably, the cathode of diode of the primary shielding from over voltage is connected with the controlled input of the relay, while the anode is connected with the output of the lightning guard block; the output of the charge block is coupled to the accumulator battery, and the lightning guard is included to the circuit "M-rail" of the facilities of electro-chemical protection of electrified railroad.

EFFECT: protection of input circuit from long-term and pulse high voltage and from voltage of reverse polarity.

6 cl, 1 dwg