Name: Microcomputer DC screen 1.6m small system 
Model: SP-GZDW   
1. Product Overview:
The 1.6m power supply small system is specially designed by Shanben Power for small capacity systems; it is suitable for small switch stations, small user substations, and the system adopts an integrated design concept, consisting of a rectifier module, a monitoring module, a step-down unit, a distribution unit, and a battery installation box; it has the characteristics of small size, simple structure, and independent system composition; the monitoring module adopts LCD Chinese character menu display, and has perfect system monitoring and battery automation management functions. It has four remote interfaces connected to the automation system, provides two communication interface options of RS232 and RS485, and provides three communication protocols of RTU, CDT, and MODBUS.

(II) System features
 Suitable for systems below 38AH/220V and 65AH/110V.
 Modules, monitoring units and step-down units all adopt live plug-in structures, which are easy to install and maintain.
 Three 2.0A/220V and 4.0A/110V natural cooling modules can be installed.
 The step-down unit has an automatic silicon chain step-down function, with a maximum current of 2A and an impact current of 30A/0.5S.
 The monitor uses LCD display, Chinese character menu, and key 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. 
Two communication interface options are available, RS232 and RS485, and three communication protocols are available, RTU, CDT, and MODBUS, which can be connected to the power station automation system.
 The monitor realizes battery voltage, control mother voltage, control mother current, battery charge and discharge current, and module status detection.
 The distribution unit can provide 2 AC inputs (one PT power supply can be selected) and 3 feed outputs.
The system automatically limits the output power when PT is supplying power.


(III) System technical indicators
AC input voltage: 220V±20%
PT supply voltage: 100V±10%
Grid frequency: 50Hz±10%
Power factor: ≥0.85Output
voltage range: 90V-140V continuously adjustable (for 110V system) 
                           180V-280V continuously adjustable (for 220V system)
Output current limit: 0.2A-2.5A (220V single module) 0.4A-4.5A (120V single module)
Voltage regulation accuracy: ≤±0.5%   
Current regulation accuracy: ≤±0.5%
Ripple factor: ≤±0.1%
Current balance: ≤5%
Efficiency: ≥93%
Output overvoltage protection: 280V±2V (220V) 140V±2V (110V)
Insulation resistance: ≥10MInsulation
strength: Output to ground, input to ground, input to output, apply 2KVAC, no arcing or flashover for 1 minute.
Audible noise: ≤55Db
Dimensions: 600 (width) × 1600 (height) × 600 (thickness)
Weight: 35KG