Xtreme Power Conversion Corporation
NXTi 3P-1P User’s Manual
Page 12
Uninterruptible Power Supply
Overload
Beeping twice every second
No
Low battery
Beeping once every second
Battery unconnected
Over charge
EPO enable
Fan failure
Over temperature
Charger failure
L1 IP fuse broken
Battery fuse broken
Overload 3 times in 30min
IP Neutral loss
IP phase abnormal
Converter Current unbalance
Inverter Current unbalance
Cover of maintain switch is open
Phase auto adapt failure
Fault
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