Xtreme Power Conversion Corporation
TX91 3.8- 10kVA User’s Manual
Page 11
Uninterruptible Power Supply
2. Connect input L2 wire to UPS input L2 terminal.
3. Connect input GND wire to input GND terminal.
4. Connect output L1 wire to UPS output L1 terminal.
5. Connect output L2 wire to UPS output L2 terminal.
6. Connect output N wire to UPS N terminal.
7. Ensure ISO TAP Jumper is in correct position (208V for 208V input or 240V for any other input
voltages).
8. Ensure Output voltage parameter is set to match the site input voltage. Refer to section 3.3
NOTE 1: The ISO Tap Selector Jumper is electrically located between the output of the inverter and the
transformer primary. In the 208V position it steps up the voltage by 11%. In the 240v position there is
no voltage change. 208V is default Position. Refer to figure 2-4.
Voltage Configuration Chart
Standard Settings
Input Voltage
Iso Tap Position
Voltage Out
208
208
230/115 (Default)
240
240
240/120
Additional Settings
Input Voltage
Iso Tap Position
Voltage Out
200
208
240
222/111
200/100
208
240
208/104
220
208
240
244/122
220/110
230
208
240
256/128
230/115
240
208
266/133
NOTE 1: If other than default setting is desired, configuration can be done at the factory for an
additional voltage configuration fee.
6. After connecting the wires, replace the terminal block cover on the rear panel of the UPS.
NOTE 1: Install the output breaker between the output terminal and the Load. I.A.W NEC code.
NOTE 2: UPS Cabinet contains an Isolation Transformer with N-G bond. This system qualifies as a
separately derived source.
Warning:
Make sure the UPS is turned off before installation.
The UPS should not be turned on during wiring connection.
