CyberPower PR750RT2U - Page 23

Problem
Possible Cause
Solution
UPS cannot work properly while
attached to a generator.
The size of generator is not suitable for
current load.
The continuous generator capacity rating must be at least twice the
total load, including the UPS and all other devices attached to the
generator; otherwise, the generator may not be able to hold the
voltage and frequency within the input tolerance of the UPS,
causing the UPS switching from utility to battery mode back and
forth. Please reduce the connected load or upgrade the generator.
The UPS is too sensitive to power events.
The quality and stability of the generator power may not be as
good as your local utility. The frequent blackouts and waveform
distortions could lead the UPS to consider the input power
inappropriate, switch to battery mode to provide clean power to
attached load, draining the battery. Refer to LCD OPERATION GUIDE
section to desensitize the UPS via LCD module, PowerPanel®
Business software or RMCARD interface (if installed).
Note: Lowering the sensitivity setting makes the UPS tolerate more
power events, but it also increases the transfer time of the UPS.
Some sensitive equipment cannot accept extended transfer time.
Test to check if there is a load drop when the UPS is switching to
battery mode.
Additional troubleshooting information can be found at www.cyberpowersystems.com.
TROUBLESHOOTING (continued)