When the municipal power is normal, one path of municipal power charges the battery through a rectifier, while the other path passes through an automatic voltage stabilizer to absorb some grid interference initially, before being directly supplied to the user via a bypass switch. At this time, the battery is in a charging state until it is fully charged and switches to a float charge state.
When the grid voltage or frequency exceeds the input range of the UPS, under abnormal conditions, the AC input is disconnected, the charger stops working, and the battery starts discharging. Under the control of the control circuit, the inverter begins to operate, producing 220V, 50Hz AC power. At this point, the UPS power supply system switches to battery-inverter, continuing to supply power to the load. Features: Simple structure, low cost, low noise; however, most of the time, the load receives slightly regulated "low-quality" sine wave power.
Long conversion time; the inverter of the backup UPS is not frequently in operation, so the dynamic condition of the inverter is not well-maintained, which easily leads to hidden faults. Suitable for less critical single PC units. Aerial Ground Power 2, 36V Aerial Power 1, 400HZ Frequency Converter 7, 115/200V Power 2, 27V DC Power 5, 400HZ Power 12, Aerial Power
