Service Manual
Chapter 3 - Commissioning
Validating the Installation
3 - 4
3x3 UPS Commissioning
Issue 2 - November 2001
3.4 - Initial UPS Start-up.
The following procedure describes the start-up and calibration of the UPS at the initial Start-up.
Figure 3-1
Operator Control Panel
Note: The following instructions refer to the controls on the UPS OPERATOR PANEL
(shown above). The user interface consits of 4 status indicator LEDs (labled 1-4),
a LCD panel and 4 control push buttons (labled a-d).
3.4.1 - Converter and Inverter Output Calibration.
The Secondary DC bus and Inverter Output settings will be automatically set by the Voltage parameters set on the
UPS Control Boards (see
Setting UPS Parameter
Section for more details).
The following table shows the correct levels of the Inverter AC volts and the Secondary DC Bus volts, depending
on the Voltage Parameters:
Voltage Parameter/
Inverter AC (L–L) Voltage.
Secondary DC Bus Voltage.
380Vac
715Vdc
400Vac
750Vdc
415Vac
800Vdc
Before starting the UPS connect a DVM set to DC volts to the UPS Secondary DC bus as shown below:
Figure 3-2
DC Bus Voltage check
F2
F3
Check Secondary DC bus
between Fuse F3 & F2
765V DC