Traction Transformer
Brief Introduction/Functions The traction transformer steps down the AC25kV single-phase alternating current to a voltage that the traction converter can withstand (about 970V). Product Parameters/Key Technologies Rated voltage(V): AC25000V input and AC970V output Rated capacity (kVA): 1500kVA-3600kVA Frequency (Hz): 50 Coil structure: 2-coil, 3-coil, 4-coil, and 6-coil Efficiency: ≥95% (rated load) Application Cases Main application: AC 25kV powered EMUs. | |
Master Controller
Brief Introduction/Functions Master controller is applied to control the operation of metro vehicles, serving as electrical appliance that indirectly controls the main circuit through the low-voltage apparatus of the control circuit. It is equipped with master joystick, direction handle, mechanical lock, and deadman button. Product Parameters/Key Technologies Mechanical life: > 2x106 Electrical life:>1×105 Weight: ≤ 17kg | |
Pantograph/ Current Collector
Brief Introduction/Functions The pantograph/current receiver is the equipment used by the vehicle to take power from the catenary-pantograph or the current collection rail, which correspond to the vehicles with pantograph and with third rail respectively. Product Parameters/Key Technologies Voltage range: DC 1000V - DC 2,000V Rated working current (pantograph): 1,500A Maximum working current (pantograph): 2,100A | |
Lightning Arrester
Brief Introduction/Functions Lightning arrester is used to prevent overvoltage from the outside of the vehicle (such as lightning strikes) and operational overvoltage inside the vehicle from damaging electrical equipment insulation of vehicle. When there is lightning or overvoltage due to operation, the surge current can flow into the ground without causing damage to the vehicle. Product Parameters/Key Technologies Continuous operating voltage: DC 2,000V (Max) Rated voltage: DC 2,000V Nominal discharge current of 8/20 waveform: 10kA Impulse overcurrent withstand of 4/10 waveform: 100kA Long duration impulse current withstand of 2mS square wave: 1,200A | |
Line Reactor
Brief Introduction/Functions The line reactor mainly filters the input end, which is generally integrated in the traction inverter. Reactor box will be set separately for some old traction converter platforms. | |
Gear Drives
Brief Introduction/Functions The gear drives play the role of transferring the torque of the motor to the wheelset of the vehicle to drive the vehicle forward. Product Parameters/Key Technologies Transmission efficiency: ≥ 97% Noise: < 103dB (3,526 r/min) | |
Grounding Device
Brief Introduction/Functions The grounding device is installed at both ends of the shaft for vehicle grounding. Product Parameters/Key Technologies Maximum current: 900A for 5 minutes IP rating: IP 67 Weight of grounding device: ≤ 3.5Kg (body, excluding brushes) | |
Water Cooling Device
Brief Introduction/Functions Water cooling device is cooling equipment with water as condensed medium. | |
Charger
Brief Introduction/Functions The input DC1500V is converted to output DC110V for DC loads through power electronic conversion. The product has the advantage of high redundancy with high-frequency DC/DC conversion technology in combination with the application of DC parallel power supply technology. Product Parameters/Key Technologies Rated power: 30KW Output voltage: DC 110V (1 ± 1.5%) Efficiency: > 90% Cooling method: Forced air cooling | |
24V Power Supply
Brief Introduction/Functions The power conversion module is mainly applied to convert DC110V power output into DC24V power to supply to the on-board equipment requiring 24V power supply. |