A guide to UPS systems
The UPS and inverter both provides the backup supply to the electrical system. The major difference between the UPS and inverter is that the UPS switches from the main supply to the battery immediately, but the inverter takes much longer.
While both protect against a power cut, a UPS is an immediate, short term solution, provide power straight away for as long as its UPS batteries have charge. A standby generator is a longer turn solution, that is slower to start up, but will provide power for as long as it has fuel.
Follow the steps below to check the battery capacity of the battery pack in AC mode, the test will last for a duration of 10 seconds.
Press the function key, followed by the down arrow and then the up arrow.
When the battery is low an audible alarm will sound, the buzzer sounds every 0.2 seconds.
The recharge time to 90% is 4hrs.
A cold start is when you start a UPS without input power. This is useful if you need to test if the UPS is not turning on due to bad input power or if you need to turn the UPS on to operate during a power outage/failure. It’s also a good test to see if the battery in the UPS is functional (not necessarily at full charge, but holding some charge).
Check all power cords are connected and nothing is loose.
UPS is faulty, output power was off and the UPS cannot recover.
If the UPS is in an abnormal state, an alarm sign will light up and there will be an audible alarm.
See the table below for common codes and their meaning, further codes are explained in the instruction guide.
