Xtreme Power Conversion Corporation
NXTi 3P-3P User’s Manual
Page 12
Uninterruptible Power Supply
Bus start failure
Beeping continuously
Yes
Bus over
Bus under
Bus unbalance
Converter over current
Inverter soft start failure
High Inverter voltage
Low Inverter voltage
Inverter output short circuited
Negative power fault
Battery SCR short circuited
Inverter relay short circuited
Battery fuse broken in battery mode
Parallel communication failure
Parallel output current unbalance
Single UPS Operation
Turn on the UPS with utility power supply (in AC mode)
1.
After power supply is connected correctly, set the breaker of the battery pack at “ON” position (the step
only available for long-run model). Then set the line input breaker at “ON” position(for dual input unit,
also set the bypass input breaker at “ON”). At this time the fan is running and the UPS enter to power on
mode for initialization, several seconds later, UPS operates in Bypass mode and supplies power to the
loads via the bypass.
NOTE:
When UPS is in Bypass mode, the output voltage will directly power from utility after you switch on
the input breaker. In Bypass mode, the load is not protected by UPS. To protect your precious devices, you
should turn on the UPS. Refer to next step.
2.
Press and hold the “ON” button for 0.5s to turn on the UPS and the buzzer will beep once.
3. A few seconds later, the UPS will enter to AC mode. If the utility power is abnormal, the UPS will operate
in Battery mode without interruption.
NOTE:
When the UPS is running out battery, it will shut down automatically at Battery mode. When the
utility power is restored, the UPS will auto restart in AC mode.
Turn on the UPS without utility power supply (in Battery mode)
1.
Make sure that the breaker of the battery pack is at “ON” position (only for long-run model).
2.
Press the “ON” button to set up the power supply for the UPS, UPS will enter to power on mode. After
initialization UPS will enter to No Output mode, then Press and hold the “ON” button for 0.5s to turn on
the UPS, and the buzzer will beep once.
3. A few seconds later, the UPS will be turned on and enter to Battery mode.
Connect devices to UPS
After the UPS is turned on, you can connect devices to the UPS.
1.
Turn on the UPS first and then switch on the devices one by one, the LCD panel will display total load level.
2.
If it is necessary to connect the inductive loads such as a printer, the in-rush current should be calculated
carefully to see if it meets the capacity of the UPS, because the power consumption of this kind of loads
is too big.
3. If the UPS is overload, the buzzer will beep twice every second.
4. When the UPS is overload, please remove some loads immediately. It is recommended to have the total
