KPDZ series railway flat carts are powered by the low voltage electricity from the railways.

The power source AC 380V is transformed into AC 36V two-phase and are respectively connected to the two rails. Then the flat trolley's wheels conduct the AC36V on rail into the electrical appliance box at the bottom of the carts. And then the AC 36V is transformed into DC 36V and then control the DC and adjust the speed and so on. KPDZ flat carts can be used both on the ‘S' and arc-shaped railways. They also can be used in the high-temperature environment. The hydraulic lifting device can be installed on the flat carts. The dc motor has the advantages of safety, flexibility, stable start, big starting torque, small impact to the gear reducer, low voltage, long lifetime and so on. But this series have strict requirement on the construction of the railways which need to be insulated. The rated load can not be more than 50T. This series' flat carts are suitable to be used in such condition: higher using frequency, not too short running distance. The running distance is not limited. When running distance is more than 70m, you need to increase the transformers to make up the voltage which has been lowered.