OPERATION:
The PS works as a DC UPS (Uninterruptible Power Supply) or as a backup power
supply system. When AC power is applied normally, the model offers a regulated
12V DC output at LOAD terminal for devices and a charging current output on
BATTERY terminal for charging a lead acid battery at the same time. Once AC fails,
the battery will replace the AC to power the model immediately without interruption.
The LOAD terminal will remain at 12VDC output for a while till the battery voltage
reduces to lower than 10.7V, the duration time depends on the volume of the battery
and the size of the load. When AC returns, AC takes over the battery to power the
load automatically, and start to charge the battery.
If you connect a solar panel or wind turbine to the BATTERY terminal at the same
time, if AC failed, when the battery voltage lower than 10.7V, the LOAD output will
turn off, but if the output voltage of the solar panel or wind turbine is higher than the
battery voltage, the battery will be charged by the solar panel or wind turbine, when
the battery voltage is back to 12.6V, the LOAD output will recover automatically.
The maximum load of the PS is around 210W, which means 12A maximum DC
output on LOAD and 5A maximum charge current on BATTERY. If the load draws
12A output, the charge current will be limited to around 5A, if there is no load, then
charge current also limited to 5A maximum.
The output voltage on LOAD terminal is regulated at 12.2V±0.2V, with over voltage
protection, over current protection and short circuit protection.
The charge voltage for AGM battery is 14.6
V±0.2V
, floating voltage is 13.6V
±0.2V
.
The charge voltage for WET battery is 14.6V
±0.2V
, floating voltage is 13.9V
±0.1V.
