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Xtreme Power Conversion Corporation
M90U-80 & 140 User’s Manual
Page 27
Uninterruptible Power Supply
Figure 3-2: Wiring diagram for single inputs
3.2 Operation Mode
This modular UPS is a three-phase, four wire on-line, double-conversion and reverse-transfer UPS that permits
operation in the following modes:
• Standby Mode
•
Line Mode
• Battery Mode
• Bypass Mode
•
ECO Mode
• Shutdown Mode
• Maintenance Bypass Mode (manual bypass)
Standby Mode
Upon connecting to utility input power, the UPS is in Standby mode before UPS is turned on (if BYPASS enable set
-
ting is Disabled), and charger function will be active when the battery is present. The load is not powered under
this mode.
Figure 3-3 : Standby Mode Diagram
factory
installed
jumpers
wiring
installed by
qualified
electrician