Operating Modes - Powerware 9150 User Manual

Operating Modes

The Powerware 9150 block diagram, shown in Figure 16, consists of
several modules, each having its own functions:
:
:
:
:
:
Utility
Power
Powerware 9150 User's Guide
®
LED Status
OVERTEMP On or
Blinking
SERVICE Blinking
ALARM Blinking
The rectifier/charger converts AC-power to DC-power and keeps the
battery bank fully charged.
The inverter converts DC-power back to AC-power, which is
delivered to the load.
The Static Bypass switch transfers the load to bypass when the
inverter is overloaded or cannot power the load.
The filter protects the load from disturbances in the utility when
power is supplied through the Static Bypass switch.
The Maintenance Bypass switch is used to bypass the UPS to utility
power during maintenance, service, or startup.
Maintenance
Bypass Switch
Rectifier/
Filter
Charger
Figure 16. Block Diagram of the Powerware 9150
:
www.powerware.com
Description
One of the main UPS components is too hot or the fan has
failed.
Battery failure, fan failure, or configuration error exists.
Contact your service representative. See "Service and Support"
on page 57.
There is a UPS alarm condition. See Chapter 6,
"Troubleshooting" on page 55 for additional information.
Static
Bypass
Inverter
Switch
Battery
Operation
Output
41