Huawei UPS5000-S-300 kVA User Manual page 151

UPS5000-S-300 kVA User Manual
(3P3W, 200 V)
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Context
When the load power is small and stable, you can shut down the inverters in some power
modules so that these power modules enter hibernation mode and other power modules bear
all the load power. This improves the system efficiency in the case of small load power and
increases the power module service life. The hibernation function can be set on the WebUI.
Procedure
Step 1 On the WebUI, choose Monitoring > Param. Settings > System Settings and set Paral. sys.
hibernate to Enable.
Step 2 Set the Hibernated redundant modules.
Step 3 Set the Module cycle hibernation period to an integer ranging from 1 to 100. The default
value is 30.
Figure 5-14 System settings
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Issue 01 (2020-03-06)
Ensure that the load power is stable. If the system load power fluctuation is greater than
30% of the rated capacity of a module (for example, the single-phase load power
fluctuation is greater than 2.5 kVA for a 25 kVA module) or the load power fluctuation is
greater than 10%, the UPS may enter and exit from hibernation mode repeatedly.
Check that the number of redundant power modules and racks are appropriate. If the
number is insufficient, the UPS may not enter hibernation mode.
Click Submit after setting parameters on the WebUI.
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