Xtreme Power Conversion Corporation
E91 User’s Manual
Page 10
Uninterruptible Power Supply
2-4. Operation Principle
The operating principle of the UPS is shown as below.
2-5. Single UPS Installation
Installation and wiring must be carried out in accordance with the local electric laws and regulations by trained
professionals.
1) Make sure that the mains wire and breakers of the building are rated for the capacity of the UPS to prevent
electric shock or risk of 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. The receptacle may be damaged 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:
CAUTION
- To reduce the risk of fire, AC input terminals of each UPS should be connected to branch circuit breaker
with maximum overcurrent protection in accordance with the National Electric Code, ANSI/NFPA 70 as below
table.
Model
E91-10K
E91-15K
E91-20K
E91-30K
E91-40K
Wiring (AWG)
6
4
2
2/0
3/0
Torque force (lb-in)
17.71
26.56
AC:60
DC:132.8
AC Input Protection Device
63A
80A
100A
150A
200A
AC Output Protection Device
30A
50A
60A
100A
150A
NOTE 1: The selections for color of wires should be followed by the local electrical laws and regulations.
NOTE 2: Only use 90°C copper wires.
NOTE 3: Ring terminal of PE stud size shall be minimum 8mm and can be connected to minimum AWG
copper wire noted above
