Shenzhen Zhilian Shengda Technology Co., Ltd.

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1: Introduction to DC wall-mounted power supply
Name
: Intelligent microcomputer DC wall-mounted power supply
Model:
(DC screen power supply)
Wall-mounted The small power supply system is specially designed by Shenzhen Zhilian Shengda Technology Co., Ltd. for small capacity systems. It is suitable for small switching stations and small user substations. The system adopts an integrated design concept and consists of a rectifier module, a monitoring module, a voltage reduction unit, a power distribution unit and The battery installation box has the characteristics of small size, simple structure, and independent system formation. The monitoring module adopts Chinese character menu display and has complete system monitoring and battery automatic management functions. It has four remote interfaces for connecting to the automation system and provides two communication interfaces, R3 and R. Select, providing three communication protocol choices of R, and B.
2: Working principle of DC wall-mounted power supply
DC wall-mounted power supply has two channels of mains power input and one channel of AC through AC switching to supply power to each charging module. The charging module converts the input single-phase alternating current into direct current, charges the battery, and supplies power to the closing load. In addition, the closing bus supplies power to the control bus after the voltage is reduced and stabilized by the step-down silicon chain device. When the mains power is outage or abnormal, the battery discharges the emergency power supply. Each basic monitoring unit in the system is managed and controlled by the main monitoring unit. The information collected by each basic monitoring unit is sent to the main monitoring unit for unified management through communication lines. . The main monitor displays various information of the DC system. Users can also query information and operations through the LCD screen or touch screen. System information can also be accessed to the remote monitoring system.
Three: Characteristics of DC wall-mounted power supply system
★Suitable for systems below 3/,/.
★The modules, monitoring units and voltage-reducing units all adopt live plug-in structures, making them easy to install and maintain.
★Can install 3 ./, ./natural cooling/air cooling modules.
★The voltage-reducing unit has an automatic silicon chain voltage-reducing function, with a maximum current and an inrush current of 3/.
★The monitor adopts display, Chinese character menu and button operation, which can realize system parameter setting, system working parameter display, system fault indication and system calibration.
★The monitor has the function of automatic battery management.
★Provides two communication interface options, R3 and R, and three communication protocol options, R, and B, which can be connected to the power station automation system.
★The monitor implements battery voltage, control bus voltage, control bus current, battery charge and discharge current, and module status detection.
★The power distribution unit can provide one AC input (one power supply can be selected) and three feed outputs.
★The system automatically limits the output power during power supply
Four: Technical specifications of DC wall-mounted power supply
Project name
Technical specifications
AC input
Voltage range ()< br/>

Frequency range

DC output
Rated voltage ()


Voltage adjustment range ()
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Rated current ()


Output current limiting range
-

Voltage regulation accuracy


Steady flow accuracy


Ripple coefficient


Conversion efficiency (full load output)
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Dynamic response (load)
Recovery time overshoot
Environmental conditions
Dielectric strength


Noise
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Working environment temperature
℃～+℃

Transportation and storage temperature
～℃

Humidity
None Condensation
Protection functions
Output over-voltage protection, output current-limiting protection, output short-circuit protection, over-temperature protection, module parallel protection, over-current protection

Dimensions: (width) (Height) (Thickness)
Commonly used models are:
-/Wall-mounted power supply/Wall-mounted power supply/Wall-mounted power supply
-/Wall-mounted power supply/Wall-mounted power supply/Wall-mounted power supply
-/Wall-mounted power supply /wall-mounted power supply/wall-mounted power supply
/wall-mounted power supply/wall-mounted power supply/wall-mounted power supply
-/wall-mounted power supply/wall-mounted power supply/wall-mounted power supply
-/wall-mounted power supply/wall-mounted power supply/wall-mounted power supply
-/Wall-mounted power supply/Wall-mounted power supply/Wall-mounted power supply
-/Wall-mounted power supply/Wall-mounted power supply