Distributed DC power supply

Abstract: Distributed DC power supply is a new type of DC power supply equipment, mainly used in small switching station and user end, for the secondary control line to provide reliable uninterrupted power supply, to solve the problem of operating overvoltage and harmonic factors such as UPS failure resulting in microcomputer protection failure, but also for the primary switching equipment to provide DC operation power.

I. Product introduction

Distributed DC power supply is a new type of DC power supply equipment, mainly used in small switching stations and user terminals, for secondary control lines (such as microcomputer protection and other intelligent terminals and indicators, analog indicators, etc.) to provide reliable uninterrupted power supply, to avoid the loss of protection of microcomputer protection when AC power loss. Solve the problem of microcomputer protection failure caused by UPS failure due to operating overvoltage and harmonics. At the same time, it can also provide DC power supply for primary switchgear (spring mechanism vacuum circuit breaker, permanent magnet mechanism vacuum circuit breaker, electric load switch, etc.) that meet the power requirements of the device.

The distributed DC power supply provides mains input and PT input. The output mode ranges from DC220V to DC24V, meeting various application requirements. The maximum output power of the device can reach 600W, which can meet the needs of different loads.

Distributed DC power supply is small in size, easy to install and connect, suitable for scattered installation in various types of switchgear. Make it more reliable than the general DC panel system, more economical (for small user terminal more obvious), and save space, reduce line loss and installation engineering, and easy maintenance, provide a new choice for the reliability of power supply system.

The distributed DC power supply adopts the high-frequency power supply technology, and the battery adopts the automatic charging management module for maintenance, which greatly prolongs the service life of the battery and makes the operation of the device more safe and reliable. The device has the function of communication and alarm, and can conveniently realize the remote automatic management of unattended.

Ii. Product category

According to the differences in the installation methods of distributed DC power in the switch cabinet, it can be divided into two types: integrated and split.

Integrated DC power supply - The battery is embedded in the main case and installed in the instrument room of the switchgear for application.

Split DC power supply - the battery is installed independently, separated from the main box, applied to the main box installed on the panel of the instrument room, the battery can be selected according to the size of the installation position, the capacity of the battery below 12AH can be installed in the instrument room.

Three, the scope of application

Distributed DC power supply is mainly used in various types of switchgear. It provides reliable DC operation power for primary switches (circuit breakers, load switches, etc.) and secondary protection devices.