From June 12th to 13th, 2023, the 7th China Smart Rail Transit Conference of RT FORUM 2022 will be held in Chongqing. Beijing Longding Xiaojie Technology Co., Ltd. will showcase our new products and new technologies in the field of rail transit at the conference. We sincerely invite you to visit our booth—B59 to discuss and exchange!

About the company

Beijing Longding Xiaojie Technology Co., Ltd. is mainly engaged in module power supplies and overall power supply solutions. It was founded by a team that has been in the industry for 20 years.The company has deeply cultivated the railway and urban rail transit industries at home and abroad, and has reached a high technical level from the module power supply to the power supply of the whole machine.Products are widely used in various equipment of railways and rail transit, including: traction converter, network control, train wireless communication, train signal, passenger information technology, gate controller, CMD, 6A, train lighting, bow network monitoring, etc.

Longding Xiaojie Company has unswervingly adhered to technological innovation. It has a technical development team of more than 20 people. It cooperates with a number of domestic scientific research institutions and well-known enterprises to establish a team of experts and has achieved a number of major innovative achievements. It is widely used in railway, electric power, military and other markets. It has successively established a power supply thermal simulation laboratory, a dynamic testing laboratory, a reliability laboratory and an electromagnetic compatibility laboratory, which can perform complete black and white box tests.

Longding Xiaojie Company has always been unremitting in the pursuit of excellent quality.The company has passed the ISO9001 quality management system certification and the national military standard quality system certification, and is currently undergoing IRIS certification.The company strictly follows international, national, and industry standards; its products have passed various certifications such as CE and ROHS, and provide customers with industry-specific overall power solutions and industry application services for power products.

Solution introduction

The application case scenarios of our power products are as follows：

Product introduction：

1. Host power supply

1. The whole machine has passed the iron standard test, excellent EMC and temperature design, flexible three-dimensional structure design, including 3U-6U and other sizes, and the overall thickness is thin.；

2. CPCI power supply with up to 4 outputs, a variety of functions to choose from (locomotive surge protection, start-up current processing, redundant backup, power health management, etc.)；

3. A variety of protection functions to adapt to the actual environment of railway locomotives and vehicles；

4. Flexible replacement of terminal connectors, flexible adjustment of structure, rapid development and production design to meet the special needs of customers.

2. Customized open board power supply

1. Low start-up inrush current, as low as 1.3A, which effectively solves the problem of air-skipping in the oems.；

2. Low cost and easy installation；

3. Low height, adapt to the height requirements of use scenarios, etc.

Three, portable power supply

1. Wide input range: the broadest products have inputs from 38V to 180VDC, and outputs from 3.3vdc to 48vdc.；

2. Provide equal volume AC input scheme, with the broadest input range of 85 to 265VAC；

3. A variety of heat dissipation methods to choose from, a variety of packaging methods to choose from, to adapt to different customer applications；

4. Flexible design, you can quickly replace the terminal and base plate；

5. Excellent thermal design, insulation design, and electromagnetic compatibility design; the typical efficiency of the whole machine is as high as 88%；

6. Complete protection function, up to 4 outputs can be output；

7. The smallest size in the industry: the thickness of the external cooling power supply is <20MM, the thickness of the portable power supply is <28mm, and the thickness of the small projection area is <50mm (the projection area is reduced by 40%)；

Fourth, the module power supply

1. Brick power supply: 50W-600W, remote control, output up and down adjustment, high thermal conductivity, full protection function;

2. Railway special module power supply (TLE series): 5-150W, ambient temperature -40℃-85℃, start-up circuit optimization, full protection functions.

5. Power supply health management system

The power supply health management system mainly realizes the function of collecting and storing data when the power supply is working, and can digitally and remotely adjust the power supply parameters, which can be applied to the PHM system.

1. The parameters of power supply monitoring can be set according to the application environment；

2. Monitor and record real-time data: input voltage, input current, power supply temperature, and output voltage and output current of up to 4 outputs, totaling 11 sets of data.Voltage accuracy is ±1%, current accuracy is ±3%, temperature error is less than 5℃, and the maximum transmission rate is 1Mbit/s；

3. The waveform acquisition function is added to realize the waveform diagram of voltage fluctuations within 3S before and after the acquisition.；

4. Support the function of automatic clock calibration；

5. Support the use of CAN communication or 485 communication；

6. Modular design；

7. Traceability: The monitored power supply realizes one-to-one correspondence through the network port address configuration (body barcode) to achieve traceability.