How to check if Kelong UPS power can't start?

In the process of using UPS power supply, some unpredictable faults sometimes occur. Processing can solve many common problems. It is particularly important to learn UPS power maintenance knowledge. Following is a detailed description of the UPS power supply can not be started:

First, the newly installed UPS power supply can not start properly.

This situation may be caused by two reasons. Users can check whether the battery connection plug on the back panel of UPS power supply has been connected. If not, you can open the front panel to check if the battery is connected.

Second case: Kelong UPS power  battery takes about two years, UPS power can not start.

This situation generally applies to most users, because batteries will generally have more or less battery capacity decline or battery inertia after two years of use. If batteries can not delay for this role, users need to consider replacing new batteries. To avoid the inertia problem of batteries, we can use battery automation management software.

Third, the voltage of a single battery is normal, but the UPS power supply cannot start.

At this time, although the cell voltage is normal, it may be due to other reasons such as the UPS power supply can not start.
1. It may be due to the connection between the battery and the battery or the connection between the battery and UPS power supply. For example, if the connection point is not firm or the connection point is oxidized, it is necessary to remove the oxide and reconnect after that.
2. It may be that the UPS power supply and battery connection insurance is broken. If it is insured, change the insurance.
3. The connection between UPS power supply and battery is very long, very thin or there is a connection point in the middle, so a large voltage drop occurs, which leads to the failure of UPS power supply to start.

Fourth case: UPS power supply can not start normally after working for a period of time.