Shenzhen Zhilian Shengda Technology Co., Ltd. South China Region

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DC screen D DC screen small system DC power supply quotation
1: Introduction to DC screen small system
Name:
Intelligent microcomputer DC screen. Mi small system
. Meter DC screen small system is specially designed by Zhilian Shengda Technology 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 reduction unit, a power distribution unit and a battery installation box. It has the characteristics of small size, simple structure and independent system. The monitoring module adopts D Chinese character menu display and has perfect system monitoring and automatic battery management functions. It has four remote interfaces to connect to the automation system, providing r and r. Two communication interface options are provided, r and D. , D three communication protocol choices.
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 to charge the battery and at the same time supply 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, the battery discharges emergency power supply. 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 for unified management through communication lines. . The main monitor displays various information of the DC system. Users can also touch the display screen to query information and operating system information, and can also access 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: DC panel small system functional characteristics
● Suitable for systems consisting of /, / or below.
● The modules, monitoring units and voltage-reducing units all adopt a live plug-in structure for installation and easy maintenance.
● Can install ./, ./ natural cooling modules.
● The voltage-reducing unit has an automatic silicon chain voltage-reducing function. The maximum current inrush current is/.
● The monitor adopts D display Chinese character menu button operation to realize system parameter setting, system working parameter display, system fault indication and system calibration.
● The monitor has the function of automatic battery management.
● Provide r and r two communication interface options. Provide r, D, D three communication protocol options to connect with the power station automation system.
● The monitor implements battery voltage, bus voltage control bus current, battery charging and discharging current, and module status detection.
● The power distribution unit can provide three AC inputs (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
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Technical indicators
AC input
Voltage range
%

Frequency range
%
DC output
Rated voltage (D)
/

Voltage adjustment range (D)


Rated current (D)


Output current limiting range
%-%

Voltage regulation accuracy
.%

Steady flow accuracy
.%

Ripple coefficient
.%

Conversion efficiency (full load output)< br/>

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


Noise


Working environment temperature
-℃～+℃

Transportation and storage temperature
-～
℃

Humidity
-% No condensation
Protection function
Output overvoltage protection, output current limiting protection, output short circuit protection, overtemperature protection module, parallel protection, overcurrent protection
Dimensions: (width) (thickness) (height) Height after adding brow is
Weight: subject to quotation
Commonly used models are:
DDD
DDD
DDD
DDD
DDD
DDD
DDD
DD