Patent CZ-306639-B6 (CZ)
Title: Circuit arrangement for indication of asymmetry of conductive currents of the driving railway vehicle with electric traction
Inventor: SRB Stanislav
IPC: B61L1/20
Filed: 2014-09-04
Abstract: Circuit arrangement for indication of asymmetry of conductive currents of the driving railway vehicle with electric traction comprises the first odd earthing (1ZL), the second odd earthing (2ZL) to the n-th odd earthing (nZL), then the first even earthing (1ZS), the second even earthing (2ZS) to n-th even earthing (nZS) of the actuating vehicle (HV), also the actuation (PO), the connection between the trolley (TR) through the pantograph (PA) to the seventh actuator terminal (7PO), the connection between the trolley (TR) and the second pole of the power supply, the connection between the first pole of the power supply and the symmetrising choke, the first contact transformer with the first conductive current, the second conductive current and the uncompensated current, with the track receiver, then the first rail, the second rail with the emergency resistor, the second contact transformer with the power supply end of the track circuit. At the inlet, from the first actuator terminal (1 PO) of the actuator (PO) to the first even earthing (1ZS), there is located the first even current sensor (S1), while, at the inlet, from the second actuator terminal (2 PO) of the actuator (PO) to the second even earthing (2ZS), there is positioned the second even current sensor (S2), while, from the third actuator terminal (3PO) of the actuator (PO) to the even n-th earthing, (NZS) there is situated the even n-th current sensor (Sn). At the inlet, from the sixth actuator terminal (6PO) of the actuator (PO) to the first odd earthing (1ZL), there is located the first odd current sensor (L1), while, at the inlet from the fifth actuator terminal (5PO) of the actuator (PO) to the second odd earthing (2ZL), there is situated the second odd current sensor (L2), while, from the fourth actuator terminal (4PO) of the actuator (PO) to the n-th odd earthing (nZL), there is positioned the n-th odd current sensor (Ln). The output (VS1) of the first even sensor (S1) is connected to the first inlet (P.SIGMA.S1) of the even adder (.SIGMA.S), while the output (VS2) of the second even sensor (S2) is connected to the second inlet (P.SIGMA.S2) of the even adder (.SIGMA.S), while the output (VSn) of n-th even sensor (Sn) is connected to n-th inlet (P.SIGMA.Sn) of the even adder (.SIGMA.S). The output (VL1) of the first odd sensor (L1) is connected to the first inlet (P.SIGMA.L1) of the odd adder (.SIGMA.L), while the output (VL2) of the second odd sensor (L2) is connected to the second inlet (P. SIGMA.L2) of the odd adder (.SIGMA.L), while the outlet (VSn) of the n-th odd sensor (Ln) is connected to n-th inlet (P.SIGMA.Ln) of the odd adder (.SIGMA.L). The output (V.SIGMA.S) of the even adder (.SIGMA.S) is connected to the first inlet (PK1) of the comparator (K), while the output (V.SIGMA.L) of the odd adder (.SIGMA.L) is connected to the second inlet (PK2) of the comparator (K), while the output (VK) of the comparator (K) is connected to the bus (BUS) via its connection (PBUS).