AC Switchgear (GIS Cabinet)
Brief Introduction/Functions The AC switchgear is used for distribution, measurement, control, and protection of AC electric energy in urban rail power supply system. The complete set of equipment is composed of an incoming cabinet, an outgoing cabinet, a feeder cabinet, a busbar cabinet, and a busbar connecting cabinet, which are gas-insulated. Product Parameters/Key Technologies Rated voltage: AC 40.5kV Rated current: AC 1250A Rated power frequency withstand voltage: AC 95/118kV Rated short-circuit breaking current: AC 31.5kA Rated short-circuit making current: AC 80kA Application Cases Apply to traction power supply systems of urban rail vehicles in Kunming, Chongqing, Wuhu, Wuxi, Taizhou, etc. in batches | |
DC Switchgear
Brief Introduction/Functions The DC switchgear is used for distribution, measurement, control, and protection of DC electric energy in urban rail power supply system. The complete set of equipment is composed of an incoming cabinet, a feeder cabinet, a negative cabinet, and a terminal cabinet. It is suitable for traction power supply systems of metro, light rail, tram, maglev, and other rail transit systems. Product Parameters/Key Technologies Rated voltage: DC 750/1500V Rated current: DC 4,000A - 6,000A Short time withstand current: 90kA/250ms Peak withstand current: 128kA Application Cases Apply to traction power supply systems of urban rail vehicles in Chongqing, Kunming, Wuhu, Changsha, Wuxi, and other cities in batches. | |
Over-Voltage Protection Device (OVPD)
Brief Introduction/Functions Over-voltage protection device is used to limit the voltage of urban rail conductor rail to ensure personal safety of passengers and staff. It can be classified for control. The device, mainly composed of rail potential limiter, contactor and thyristor, is suitable for traction power supply systems of rail transit such as metro, light rail, maglev, etc. Product Parameters/Key Technologies Rated voltage: DC 750/1500V Rated current: DC 1250A Voltage detection direction: Bidirectional Action voltage setting range: DC 0 - 600V Short-time withstand current: 50kA/250ms Peak withstand current: 71kA Application Cases Apply to traction power supply systems of urban rail vehicles in Chongqing, Kunming, Wuhu, Changsha, Wuxi, and other cities in batches. | |
DC Grounding Protection Device (Unidirectional Conductor)
Brief Introduction/Functions The DC grounding protection device (unidirectional conductor) is used to detect ground faults of urban rail DC power supply system to ensure system safety. The device, mainly composed of high-power diode and fault current detection unit, has the advantages of sensitive and fast response, and small short-circuit fault limitation, etc. It is suitable for power supply systems of rail transit with special rail for current return, such as metro, monorail, maglev, etc. Product Parameters/Key Technologies Rated voltage: DC 1500V Rated current: DC 3000A Short-time withstand current: 100kA/120ms Current equalizing coefficient: ≥ 0.8 Application Cases The special rail current return system can effectively solve the counter-current problem, which has been widely applied to Ningbo Metro Line 4 in batches. | |
Drainage Cabinet
Brief Introduction/Functions The drainage cabinet can recover the stray current in the structural steel bars to the traction power supply system, reducing the corrosion of stray current on the structural steel bars. The drainage cabinet is mainly composed of diodes, controllable devices, current limiting resistors, load switches, etc. Product Parameters/Key Technologies Rated current: 200A (drainage diode branch), 400A (grounding diode branch) Short-time withstand current: 100kA/200ms Rated insulation voltage: DC 3,000V Application Cases It is applied in the substation of urban rail transit power supply system. | |
Network Isolating Switchgear
Brief Introduction/Functions The network isolating switchgear is used to break the line when there is voltage and without load current; realize electrical isolation or connection between two independent power supply areas, and electrically isolate the lines under repair from adjacent lines or circuit breaker equipment; suitable for traction power supply systems in metro and other rail transit systems. Product Parameters/Key Technologies Rated voltage: DC 750/1500V Rated current: 4000A Power frequency withstand voltage: 9.2kV/11kV, 1min Impulse withstand voltage: 20kV/46kV, 1.2/50 μ S Application Cases Apply to traction power supply systems of urban rail vehicles in Changsha, Kunming, Wuhu, Wuxi, and other cities in batches. | |
Low-Voltage Switchgear
Brief Introduction/Functions The low-voltage switchgear is used for distribution, measurement, control, and protection of low-voltage AC electric energy in urban rail power supply system, which is composed of a low-voltage incoming cabinet, a low-voltage busbar connecting cabinet, and a low-voltage feeder cabinet, etc. Product Parameters/Key Technologies Rated voltage: AC 400V Rated current: ≤ 6300A Rated frequency: 50Hz Impulse withstand voltage: 8kV IP rating of enclosure: IP40 Application Cases Apply to power supply systems of urban rail vehicles in Wuxi, Changsha, Chongqing, Qingyuan and other cities in batches. | |
Environmental And Electric Control Cabinet
Brief Introduction/Functions The environmental and electric control cabinet is a low-voltage switchgear responsible for the power supply and control of indoor ventilation and air conditioning equipment in rail transit, which is composed of a incoming cabinets, a busbar connecting cabinet, a feeder cabinet, etc. Product Parameters/Key Technologies Bus voltage: AC 400V Rated frequency: 50Hz Impulse withstand voltage: 8kV IP rating of enclosure: IP40 Application Cases Apply to power supply systems of urban rail vehicles in Wuxi, Changsha, Chongqing, Qingyuan and other cities in batches. | |
Distribution Box
Brief Introduction/Functions The distribution box is used for ground power distribution system of rail transit for power or distribution for lighting in three-phase AC distribution systems below 500V. It has advantages of compact structure, beautiful and elegant appearance, and convenient maintenance. There are a variety of wiring schemes for users to choose. Product Parameters/Key Technologies Distribution system mode: TN-S System voltage: AC 380/220V Rated frequency: 50Hz Application Cases Apply to power supply systems in Wuxi, Nanning, Chongqing etc. in batches. |