Xtreme Power Conversion Corporation
M90S-4S User’s Manual
Page 27
Uninterruptible Power Supply
4. Operation
• Do not start the UPS until the installation is completed.
• Make sure the wiring is correct and the power cables are properly connected.
• Make sure all the breakers are switched OFF.
4.1 AC Startup
Ensure to follow this procedure when turning on the UPS from a fully powered-down condition.
The operating procedures are as follows:
Step 1: Refer to the “Installation Section” to connect the power cables and install the Power Modules and the bat-
tery required for the UPS system.
Step 2: Switch ON the battery breaker on the External Battery Pack if installed.
Step 3: Switch ON the external power switch to power the UPS.
Step 4: Switch ON the input breaker (Q1). The UPS will enter Standby Mode, if the setting of Bypass mode is dis-
abled (default).
Or the UPS will enter Bypass Mode, if the setting of Bypass mode is enabled.