Xtreme Power Conversion Corporation
NXTi 3P-3P User’s Manual
Page 6
Uninterruptible Power Supply
1.
RS-232 communication port
2.
USB communication port
3. Emergency power off function connector (EPO connector)
4. Share current port (only available for parallel model)
5.
Parallel port (only available for parallel model)
6. Intelligent slot
7. Power stage fan
8. External battery terminal(Only available for long-run model)
9.
Bypass Input Circuit Breaker(Only available for dual input unit)
10.
Input/Output terminal (Refer to Diagram 2)
11.
Line Input circuit breaker
12.
Maintenance bypass switch
13. Output Grounding terminal
14. Output terminal: connect to mission-critical loads
15.
Line input terminal
16. Bypass input terminal(Only available for dual input)
17. Input Grounding terminal
Single UPS Installation
Installation and wiring must be performed in accordance with the local electric laws/regulations and execute the
following instructions by professional personnel.
1.
Make sure the mains wire and breakers in the building are enough for the rated capacity of UPS to avoid
the hazards of electric shock or fire.
NOTE:
Do not use the wall receptacle as the input power source for the UPS, as its rated current is less than
the UPS’s maximum input current. Otherwise the receptacle may be burned and destroyed.
2.
Switch off the mains switch in the building before installation.
3. Turn off all the connected devices before connecting to the UPS.
4. Prepare wires based on the following table:
Model
Wiring spec (AWG)
Input(Ph)
Output(Ph)
Neutral
Battery
Ground
20K
8
8
6
–
6
20KL
8
8
6
6
6
NOTE 1:
The cable for 20K/20KL should be able to withstand over 63A current. It is recommended to use
AWG 8 or thicker wire for Phase and AWG 6 or thicker wire for Neutral for safety and efficiency.
NOTE 2:
The cable for 30K/30KL should be able to withstand over 63A current. It is recommended to use
AWG 8 or thicker wire for Phase and AWG 4 or thicker wire for Neutral for safety and efficiency.
NOTE 3:
The selections for color of wires should be followed by the local electrical laws and regulations.
5.
Remove the terminal block cover on the rear panel of UPS. Then connect the wires according to the fol-
lowing terminal block diagrams: (Connect the earth wire first when making wire connection. Disconnect
the earth wire last when making wire disconnection!)
