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Troubleshooting Power Sources and Power Protection Devices ]
My UPS doesn't provide proper backup power when the line power goes out
Explanation: A UPS is being used on the PC, but when the power goes out the UPS
doesn't keep the PC running.
Diagnosis: There is either something wrong internally with the device, or it has
been connected or configured incorrectly.
- If the unit is making any noises or has LEDs flashing in strange configurations, consult
the manufacturer's technical support.
- The unit may be overloaded. If a 400 kVA unit will support your system for 5 minutes on
battery backup, this does not mean that a 200 kVA unit will necessarily support it for 2.5
minutes. Once a unit gets too much load on it, it may not work at all when the
power goes out. You will need a more powerful unit in this case.
- Check the unit physically to make sure that everything is connected properly, there are
no tripped circuit breakers, etc.
- Try plugging the PC into a different socket in the device and see if that solves the
problem. If it does, the device has a failure with that particular socket and it needs to
be repaired or replaced.
- The batteries could be damaged, defective, or discharged. Follow the manufacturer's
instructions for ensuring that the batteries are fully charged and see if the problem
- Consult with the manufacturer of the device for technical
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