Welcome to visit Nanjing Huashi Electronic Scientific Co., Ltd.

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025-57931977

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南京华士电子科技有限公司 南京华士电子科技有限公司
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Nanjing Huashi Electronic Scientific Co., Ltd.

Nanjing Huashi Electronic Scientific CO.,Ltd. was established in 1992. The company is headquartered in Nanjing, Jiangsu Province, China. It is a national high-tech enterprise and a strategic partner of the Institute of Electrical Engineering of the Chinese Academy of Sciences.

The company has been focusing on the development of key rail vehicle electrical equipment solutions and product integration such as...

News Center

Nanjing Huashi "Linear Motor Vehicle Traction System" project was awarded the 2021 Science and Technology Award of Jiangsu Institute of Engineers
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Huashi has helped Singapore's first driverless refurbished vehicles to carry passengers
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Huashi company was once again awarded the outstanding contribution to the Yuhua Economic Development Zone
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Huashi product

Metro rail traction converter

Metro rail traction converter

Metro/light rail traction converter is mainly used in the traction system of urban rail transit vehicles. Its principle is to convert the power supply of catenary into the power supply needed by traction motor of vehicles to provide traction force and electric braking force for the whole vehicle.

Metro rail auxiliary converter

Metro rail auxiliary converter

Subway/Light Rail Auxiliary Converter is mainly used in Urban Rail Transit Vehicle Auxiliary Power Supply System, which includes Inverter Unit and Converter Unit to supply power for medium and low voltage electrical equipment of vehicles.

Pulling motor

Pulling motor

Subway traction motor adopts three-phase rat cage asynchronous electric motor, using frequency conversion and variable voltage speed regulation mode. The traction converter output three-phase AC power to power the stator winding of the traction motor.The rotating magnetic field is generated on the motor stator winding, which cuts the rotor conductor to sense the electromotive force and current. The rotor conductor is exerted by the electromagnetic force under the action of the magnetic field, forming the electromagnetic torque, driving the motor rotation, converting the electric energy into mechanical energy, and driving the train to run.

Main fuse box

Main fuse box

High-pressure input loop components for integrated traction converters and auxiliary converters.Control the switching between traction, auxiliary input power supply and ground by the high voltage disconnecting switch.

Braking resistor

Braking resistor

The brake resistor is mainly used to consume the excess energy that the power grid cannot absorb in the electric brake to ensure that the intermediate DC circuit voltage does not exceed the limit. Brake resistor is composed of brake resistance, cooling fan, thermostat, metal box and other components.Each bullet train is equipped with one brake resistor with two separate brake resistors; each brake resistance is forced air cooled and powered by the 400VAC circuit of the traction converter cooling system.

Pantograph Type Current Collector

Pantograph Type Current Collector

Contact with the catenary on the vehicle running line, realize the electrical connection between the catenary DC1500V and the vehicle, form a power supply circuit with the vehicle running track, and provide the DC1500V power supply for the vehicle.

Main fuse box

Main fuse box

It can effectively prevent the impact of the power supply network when serious faults such as short circuit occur at the back end of the fuse output, and can also physically isolate the converter from the power supply network to avoid the further expansion of the fault.

DRT 【Traction convertor】

DRT 【Traction convertor】

The traction controller of rubber train is mainly used in the traction system of urban ground rubber rail train. Its principle is to convert the power new energy battery or supercapacitor of the digital rail train into the power supply required by the permanent magnet synchronous motor, so as to provide traction and electric power for the whole vehicle.

DRT 【Auxiliary converter】

DRT 【Auxiliary converter】

Rubber wheel number rail car auxiliary converter is mainly used in the urban ground rubber wheel number rail train auxiliary system, including inverter unit and transformation unit, integrated vehicle auxiliary battery, to provide power for the vehicle medium and low voltage electrical equipment.

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Huashi service

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Convenient

Supply and replacement of

spare parts

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High efficiency

Technical support and

maintenance service support

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major

Supply and replacement of

spare parts

Professional maintenance and after-sales team.Eight After-sales Service

Institutions and Six Service Areas in China. 

According to the requirements of customers, Nanjing Huashi provides related products and service of product life cycle of supporting products, establishes after-sales technical service network covering important cities throughout the country, and always puts high quality and efficient service in the first place of enterprises. 

Contact us

 

Contact person: manager Xu

Telephone:025-57931977

E-mail:xzj@huashi.cc

Address: No.26 Fengyi Road, Yuhua Economic Development Zone, Nanjing, Jiangsu Province

 

中山市恒之高自动化称重设备有限公司

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Nanjing Huashi Electronic Scientific Co., Ltd.      苏ICP备2020052654号-1      Power by300.cn