1. We are a professional manufacturer of Motorized transfer trolley in China.The transfer car can be used for transfer heavy cargo or equipment between the fix point.They widely use in the line of metallurgy,coal,shipbuilding, machinery and light industry. We manufacture KPD, KPDS, KPDZ, KPC, KPJ, KPX, KPT and KP series according to the different power supply mode. The range of load is 5-300t.
2.  KPDZ Transfer Trolley. Its power is supplied with single-phase 36V low voltage unit. DC motor drive.
The working principle : AC 380V is transformed into AC 36V by way of transformer, and then sent to the current rectifier on the truck, which supply 36V direct current to DC motor.
3.  Advantage: Rails are electricity conductor instead of cable. You need not worry about rail circuit impacted, and staffs wouldn't care about pulling or drawing cable in case of injuring themselves.
 Shortage: erection requirement is very stringent, and transporting distance is within 60 meter. Beyond the range, you need to add another transformer for lower AC 380V to 36V to the line.