Vertiv™ | Liebert® STS2/PDU
™
User Manual | Rev. 6 | 10/2017 112
PDU
This selection is set at the factory to YES, which allows the LCD to draw the Mimic accordingly and display PDU
metering and alarm information.
Select the PDU button in the System Options window (see Figure 73). This opens the PDU Options window,
shown below in Figure 74.
Figure 74 PDU options button
The PDU Options window allows you to specify whether you have the surge suppression option.
• If the TVSS option is installed, this selection is set at the factory to YES. To disable surge suppression, click NO.
• Click SAVE.
4 Pole Transfer Switch
This selection is set at the factory to indicate whether the system is a 3 pole or 4 pole unit. The 4 pole design is
not available at this time.
Shunt Trip
This selection is set at the factory.
Wye Output Transformer
The Wye Output Transformer controls the firing of the SCRs on startup, which minimizes the inrush into PDU
transformers. Output breakers and PDU input breakers have to be closed when you start up the system. Based
on whether the input side of the PDU transformer is configured as a Wye or Delta changes the firing sequence of
the SCRs.
If the Liebert STS2/PDU is connected to a PDU configured as a Wye:
• Select YES for the Wye Output Transformer choice in the System Options dialog box.
Remote Source Select
If your system is configured with the optional Remote Source Selection, it must be enabled from the System
Options menu. See 4.4 - Remote Source Selection Wiring for more information.
If the system is utilizing Remote Source Selection:
• Select YES for the Remote Source Select choice in the System Options dialog box to activate the option.
System ID
Most of the settings for System ID are set by Liebert either at the factory or when the unit is installed.
The system is identified and tracked with these numbers: Order No., System Tag No., System ID No. and Model
No.
Language, Time and Date are synchronized with the location of the unit.
The only configurable field is the Password. See Using the Password on page 98 for more information on
configuring and using the password.
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