Operations
36
IST5 Tower UPS 10kVA~40kVA User Manual
5.2.3 Switching the UPS into Normal Mode from Bypass Mode
Follow the path by selecting the icon of
and then s
Manual ESC
, the system
transfer to Normal Mode
Note
Normally, the system will transfer to the Normal mode automatically. This function is used when
the frequency of the bypass is over track and when the system needs to transfer to Normal mode by
manual.
5.2.4 Switching the UPS into Maintenance Bypass Mode from Normal Mode
These following procedures can transfer the load from the UPS inverter output to the
maintenance bypass supply, which is used for maintaining the bypass module.
Transfer the UPS into Bypass mode following section 5.2.2.
Open the battery breaker and close the maintenance bypass breaker. And the
load is powered through maintenance bypass and static bypass.
The load is powered through maintenance bypass.
Protective cover Maintenance switch
Maintenance switch
Screw for protective cover
Fig.5-2 the cover of maintenance bypass breaker
Waring
Once the cover on the maintenance bypass breaker is removed, the system will transfer to bypass
mode automatically.
Waring
Before making this operation, confirm the messages on LCD display to be sure that bypass supply
is regular and the inverter is synchronous with it, so as not to risk a short interruption in powering
the load.
Danger
Even with the LCD turned off, the terminals of input and output may be still energized .
If you need to maintain the power module, wait for 10 minutes to let the DC bus capacitor fully
discharge before removing the cover.
Summary of Contents for IST5010
Page 4: ......