Traction system of electric locomotive

Brief introduction/functions

Combined with class of repairs of China Railway Group and related product application data, C4, C5, and C6 maintenance and repair can be conducted for key components such as traction converter, auxiliary converter and network control system to improve reliable application of product.

Application cases

Main application: Maintenance and repair of HXD1 series locomotive, DC locomotive and other models.

Traction system of diesel locomotive

Brief introduction/functions

Combined with class of repairs of China Railway Group and related product application data, C4, C5, and C6 maintenance and repair will be conducted for key components such as traction converter, auxiliary converter, and network control system to improve reliable application of product.

Application cases

Main application: Maintenance and repair of HXN5 locomotive, HXN5B locomotive and other models.

Traction system of high-speed EMU

Brief introduction/functions

Aiming at the high-level maintenance of high-speed EMUs, our company has formed an industrial layout mainly based on Qingdao maintenance base, supplemented by those in Wuhan, Chengdu, Jiangmen and Guangzhou, capable of high-level maintenance and product servicing for traction converters, auxiliary power modules, network control systems, air ventilation systems and other supporting products of EMUs.

Application cases

Main application: High-level maintenance and product servicing of traction converters, auxiliary power modules, network control systems, air ventilation system and other supporting products for CRH2 EMUs and standard EMUs.

Traction system of intercity EMU

Brief introduction/functions

We have established maintenance bases in Qingdao, Chengdu, Jiangmen and other cities for high-level maintenance of intercity EMUs, and continuously expanded them. The maintenance bases are capable of providing high-level maintenance and product servicing for supporting products of EMU such as integrated main and auxiliary traction converter and network control system.

Product parameters/key technologies

We have a professional maintenance technology and service team. There are 30 people in the maintenance technology support team, nearly 90 people (including 4 doctors) in the product reliability research team, and 204 on-site management and executive people.

With advanced maintenance facilities and strong maintenance capabilities, the total area of each maintenance base plant covers approximately 24,000 square meters, with 36 sets of professional automatic test benches for various products and 3 intelligent lean production lines, meeting high-level maintenance with annual output of about 900 standard EMUs.

We have an intelligent maintenance line and a professional maintenance team, taking advantage of intelligent maintenance technologies to upgrade and build efficient lean production system and standardized maintenance plant to ensure quality of maintenance products.

Application cases

Main application: Class 3 and Class 4 maintenance and product service of EMU products such as integrated main and auxiliary traction converters, network control systems, etc. on intercity EMUs.

Traction system of urban rail vehicle - Intermediate maintenance of traction system

Brief introduction/functions

The intermediate maintenance cycle is about 5 years or 500,000 km of operation. The vehicle is disassembled, and the electrical system components are not removed from the vehicle as a whole. Localized maintenance is carried out to check, test and repair equipment and parts and consumable parts are replaced.

Product parameters/key technologies

Main maintenance contents:

1. Clean, check and repaint the cabinet2. Replace seals and fan bearings3. Power module and board function test4. Electrical material performance test

Application cases

Main application: Intermediate maintenance projects for Nanchang Metro Line 1, Shanghai Metro Line 1 and Line 11, etc.

Traction system of urban rail vehicle - Major repair of traction system

Brief introduction/functions

During the routine major repair, the vehicle is completely disassembled, the important components of the electrical system are returned to the factory (manufacturer or remote maintenance base) for maintenance, and the performance after maintenance is close to the new vehicle standard. The equipment and parts shall be checked, tested, and repaired and the wearing parts shall be replaced.

Product parameters/key technologies

Main maintenance contents:

1. Clean, check, flaw detect and repaint the cabinet2. Replace consumable parts3. Low-voltage/high-voltage function and performance testing of components and systems4. Disassembly inspection and testing of supplies, such as switches5. Replacement of expired wearing parts

Application cases

Main application: Major repair projects for Shenyang Metro Line 2 and Beijing Subway Fangshan Line etc.

Traction system of urban rail vehicle - Upgrading of traction system

Brief introduction/functions

Autonomous platform: On the basis of routine intermediate maintenance/major repair, submit a variety of upgrading schemes for product functions, performance, materials, platforms, interfaces, etc. in which some products of the original system shall be upgraded or new equipment shall be introduced;·Cross platform: Provide product replacement and equipment installation on the basis of routine intermediate maintenance/major repair to replace or introduce new equipment to some products of the original system.

Product parameters/key technologies

Main maintenance contents:

Main maintenance contents:

Autonomous platform:

1. Material substitution and upgrade2. Control platform upgrade3. Power output capability upgrade4. Installation of LCU equipment5. Improvement of data processing/transmission/storage capabilities

Cross platform:

1. Integral replacement of traction system2. Integral replacement of auxiliary system3. Power module replacement4. Control system replacement

Application cases

Main application: Localization and upgrade of Shenzhen Metro Line 3, upgrade of Guangzhou Metro Line 1, etc.

Traction system of urban rail vehicle - Long-period maintenance service

Brief introduction/functions

Long-period low-cost maintenance scheme relying on condition-based repair technology. Condition-based maintenance relies on vehicle condition detection and diagnostic information to determine degree of equipment degradation, fault location, and cause through statistical analysis. It is a preventive maintenance strategy before the fault occurs, which can effectively avoid sudden faults and accidents, and reduce maintenance costs.

Product parameters/key technologies

Typical items that enable condition monitoring are as follows:

·System operating status·High-speed circuit breaker status·Traction motor status·Key contactor status·Auxiliary converter output status·Battery status

Traction system of urban rail vehicle - Spare parts

Brief introduction/functions

Supply spare parts of traction, auxiliary, network, braking and other systems, all of which are genuine and timely delivery guaranteed.

Application cases

At present, spare parts have been supplied for Wuxi Metro Lines 1 and 2, Tianjin Metro Lines 5 and 6, and other lines.

Traction system of urban rail vehicle - Technological consulting

Brief introduction/functions

Based on years of maintenance technology research and maintenance project experience, we can provide various technological consulting services for electrical system maintenance of urban rail vehicle, including solution provision, third-party evaluation, business guidance, and other forms, to give users effective technological support for electrical system maintenance of vehicle.

Product parameters/key technologies

Main scope of consultation:

·Inertial troubleshooting solution·Intermediate maintenance/major repair integrated solution·Life degradation status assessment·Development for substitution of discontinued and fault prone devices

Application cases

Main application: intermediate maintenance consultation project of Chongqing Metro Line 6.