Emerson Static Transfer Switch Pole Transfer Switch, Shunt, Wye Output Transformer, System ID

Liebert STS2 Touch Screen Display

4-Pole Transfer Switch

This selection is set at the factory to indicate whether the system is a 3-pole or 4-pole unit.

Shunt

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 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 Selection

If your system is configured with the optional Remote Source Selection, it must be enabled from the System Options menu. See 5.5 - Remote Source Selection Wiring for more information.

If the system is utilizing Remote Source Selection:

•Select YES for the Remote Source Selection 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.

Order No., System Tag No., System ID No. and Model No. are the numbers used to identify and track the system.

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 87 for more informa- tion on configuring and using the password.

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