Shenzhen Zhilian Shengda Technology Co., Ltd.

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1: Introduction to DC screen small system
Name:
Intelligent microcomputer DC screen. Mi small system,
. Mi DC screen small system is a product of Zhilian Shengda Technology. Designed for small-capacity systems, it is suitable for small switch stations and small user substations. The system adopts an integrated design concept and consists of a rectifier module, a monitoring module, a voltage-reducing unit, a power distribution unit and a battery installation box. It has a small size, simple structure and independent structure. The system and other characteristics monitoring module adopts Chinese character menu display, complete the system monitoring and battery automatic management functions, has four remote interfaces to connect to the automation system, provides two communication interface choices of R3 and R, and provides three communication protocol choices of R, and B.
2: Working principle of DC screen
Simply put, DC screen is a device that provides stable DC power supply.
The two-channel mains power of the DC panel inputs one AC through the dual-channel AC switching device to supply power to each charging module. The DC panel charging module converts the input three-phase/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 through the voltage reduction device. When the mains power is outage or abnormal, emergency power supply is provided by battery discharge. Each basic monitoring unit in the DC panel 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 through communication lines. Unified management. The main monitor displays various information of the DC system. Users can also touch the display screen to query information and operate. System information can also be connected to the remote monitoring system.
In addition to basic AC monitoring, DC monitoring, and switch monitoring, the DC panel can also be configured with insulation monitoring and battery inspection functions to comprehensively monitor the DC system.
Three: Functional features of DC panel small system
● Suitable for systems with a size of 3/, or less.
● 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 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 charging and discharging 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 indicators of DC panel small system
Project name
Technical indicators
AC input
Voltage range ()


Frequency range

DC output
Rated voltage ()


Voltage adjustment range ()


Rated Current()


Output current limit range
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Voltage stabilization accuracy


Stabilization accuracy


Ripple coefficient


Conversion efficiency (full load output)


Dynamic response (load )
Recovery time overshoot
Environmental conditions
Insulation strength


Noise


Working environment temperature< br/> ℃～+℃

Transportation and storage temperature
～
℃

Humidity
No condensation
Protection function
Output over-voltage protection, output current-limiting protection, output short-circuit protection, over-temperature protection, module parallel protection, over-current protection

Overall dimensions: (width) (thickness) (height) plus The height behind the brow is
Weight: subject to quotation
Commonly used models are:
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