Chapter 4 Operations
32
HSTP3T 15/20KE-C/KEBC-C User Manual
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 UPS, wait for 10 minutes to let the DC bus capacitor fully discharge
before removing the cover.
4.2.5 Switching the UPS into Normal Mode from Maintenance Bypass Mode
These following procedures can transfer the load from the Maintenance Bypass Mode to
inverter output.
1. After finish of maintenance, close the output, bypass breakers and bypass static switch will
be turned on in 30S after the LED screen goes on, the bypass indicator goes green and the
load is powered through maintenance bypass and static bypass.
2. Turn off the maintenance bypass switch and fix the protection cover, and then the load is
powered through bypass static switch.
3. Select the icon of
and select
Fault Clear
to turn on the inverter.
4. After 60S, the system transfers to Normal Mode.
Waring
The system will stay on bypass mode until the cover of maintenance bypass breaker is
fixed.
4.3 Battery Maintenance
If the battery is not discharged for a long time, it is necessary to test the condition of the
battery.
Enter the menu
，
as is shown in Fig.4-3 and select the icon
MaintTest
，
the system
transfers into the Battery mode for discharging. The system will discharge the batteries until
the alarm of “Battery low voltage” is given Users can stop the discharging by the “Stop Test”
icon
.
With the icon of
BattTest
, batteries will be discharged for about 30 seconds, and then
re-transfer to normal mode.
Summary of Contents for HSTP3T15KE-C
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