Wall mounted dc screen
DC power supply panel
Scope of application ：
The monitoring module is displayed by LCD Chinese menu, which has perfect functions of system monitoring and battery automatic management, and has four-remote interface with the automatic system, providing RS232 and RS485 communication interface options, and providing RTU, CDT and MODBUS communication protocol options.
product details
Overview of wall-mounted dc screen
Wall power supply is designed for small capacity system,suitable for small switching station,small user substation,the system adopts integrated design idea,composed of rectifier module,monitoring module,buck unit,distribution unit and battery installation box;It has the characteristics of small volume,simple structure and independent system.The monitoring module is displayed by LCD Chinese menu,which has perfect functions of system monitoring and battery automatic management,and has four-remote interface with the automatic system,providing RS232 and RS485 communication interface options,and providing RTU,CDT and MODBUS communication protocol options.
Second,system characteristics
1.Live plug and pull structure is adopted for modules,monitoring units and buck units,which is convenient for installation and maintenance.
2.Three 2.5a/220V and 4.0a/110V natural cold modules can be installed.
3.Step-down unit has automatic silicon chain step-down function,current 2A,impulse current 30A/0.5s.
4.The monitor adopts LCD display,Chinese menu and key operation to realize system parameter setting,system working parameter display,system fault indication and system calibration.
5.The monitor has the function of automatic battery management.
6.RS232 and RS485 communication interfaces are provided,and RTU,CDT and MODBUS communication protocols are provided,which can be connected to the power station automation system.
7.Monitor realizes battery voltage,bus control voltage,bus control current,battery charge and discharge current and module state detection.
8.The distribution unit provides 2 channels of ac input(PT power supply one way is optional)and 3 channels of feed output.
9.The system automatically limits the output power of PT power supply.
Iii.Technical parameters
Ac input voltage:220V±20%
PT power supply voltage:100V±10%
Grid frequency:50Hz±10%
Power factor:≥0.85
Output voltage range:90v-140v continuously adjustable(for 110V system),180v-280v continuously adjustable(for 220V system)
Output current limit:0.2a-2.5a(single module)
Voltage stability accuracy:≤±0.5%
Steady flow accuracy:≤±0.5%
Ripple coefficient:≤0.1%
Uniformity of flow:≤5%
Efficiency:93%or higher
Output overvoltage protection:280V±2V(220V),140V±2V(110V)
Insulation resistance:10 m or moreΩ
Insulation strength:2KVAC is applied to output to ground,input to ground and input to output,with no flashover and flashover for 1min.
Relative humidity:≤90%
Ambient temperature:-5℃~45℃
Audible noise:≤55dB
Overall size:680X560X265(height X width X depth)
Focus on wechat