Background And Application Of DC Power Systems

Due to their distinct technical advantages, DC power supply systems have received increasing attention and are becoming more closely integrated with everyday applications. DC systems are widely used in many critical sectors, including urban trolleybuses, metro systems, metallurgy, chemical processing, solar power generation, rolling mills, marine electrical systems, and mining operations.

As requirements for power supply reliability continue to increase and DC load capacities grow, higher performance standards are being placed on DC circuit breakers. These devices must demonstrate strong resistance to shock, vibration, and inclination, particularly in applications such as ships and railway vehicles, where operating conditions can be unstable. In highspeed rail and similar environments, DC circuit breakers must ensure reliable connection and dependable interlocking during operation.

To enable convenient insertion and withdrawal during installation and maintenance, DC circuit breakers are commonly mounted on a traction trolley, which moves along internal cabinet rails via travel wheels. However, many existing trolley designs on the market suffer from difficult operation and unreliable interlocking performance.

Xing Electric DC Traction Trolley Solution
To address these challenges, Xing Electric Appliance Group has developed a DC traction trolley featuring a lead-screw-driven, Tshaped intermediate transmission mechanism, forming an integrated DC circuit breaker trolley unit.

Key features include:
Dual-layer movable trolley design for smooth and easy operation
Mechanical life exceeding 3,000 operations
Open/close interlocking and mobile emergency trip function
Upgradeable to motorized operation
Compatible with GE circuit breakers and domestic DC circuit breakers
This solution ensures operator safety while offering easy assembly, reliable interlocking, smooth movement, secure breaker connection, and long service life, making it well suited for demanding DC power applications.