Product Overview
The GZDW-1B wall-mounted system is a high-reliability product designed on the basis of many years of development experience. It consists of the AC input distribution section, rectifier section, DC output and monitoring section. Featuring small size, a simple structure and wall-mounted installation that takes up no floor space, it is mainly used in various switching stations and user substations. The system supplies DC current for the opening and closing of circuit breakers and for instruments, meters, relay protection and emergency lighting in secondary circuits.
Type Designation
Product Features
- Features small size, a simple structure and wall-mounted installation that takes up no floor space.
- Adopts the modular design peculiar to switching power supplies, with redundant hot standby.
- Extra-wide voltage input range with strong network adaptability, suitable for relatively harsh environments.
- The charging modules can be hot swapped for convenient and fast online maintenance.
- The charging modules adopt the latest international soft-switching technology, with high conversion efficiency and low electromagnetic interference.
- Hardware low-differential autonomous current sharing technology, with a typical output current unbalance between modules of ±3%.
- The charging modules have passed CE safety and electromagnetic compatibility certification, making them reliable and safe.
- Open interface design with powerful communication functions, allowing convenient connection to substation RTU devices or the DCS computer monitoring system of a power plant.
- Automatic battery management and protection, with real-time automatic monitoring of the battery operating state and various parameters 9; used together with a battery inspector, it is more convenient to monitor the fault state of the battery bank and of each individual cell.
- A built-in insulation monitoring relay is provided; an external insulation relay or insulation monitor may also be used, giving flexibility.
- Convenient real-time monitoring of the insulation condition of the DC busbar.
Note: a signal box can be added as required by the user to provide accident signal or pre-warning signal alarm functions.
Two AC inputs can be selected (one of which may be supplied by a PT at 100 VAC); when supplied by a PT the output power is automatically limited. The GZDW-1B wall-mounted DC power supply is mainly used in various switching stations and user substations, supplying DC current for circuit breaker opening/closing and secondary circuits.
Related Products
Low-voltage switchgear of the same series and other types available for selection:
