Vertiv™ | Liebert
®
STS2
™
100-1000A, 50/60Hz User Manual | Rev. 12 | 11/2017 16
6.12 Input Junction Box Installation—Optional
The input junction box option is available to simplify input connections to the Liebert STS2. Two input junction
boxes and the associated flexible 10 foot long (3 meter) input cables are provided with this option.
This option is available only with bottom cable entrance, typically when the unit is located on a raised floor.
If the input junction boxes will be used, they may be shipped either with the unit or in advance to be installed
during the rough-in stage of construction.
Locate the junction boxes a maximum of 8 feet (2.4 meters) from the planned location of the Liebert STS2.
Due to a lack of clearance for the cables below the unit, the cables are also shipped loose from the unit for
installation at the site. The input cables connect from the input junction boxes to the input power bus bars inside
the Liebert STS2.
The standard configuration for the input junction boxes and cables is for 3-wire-plus-ground feeds. If the input
neutral is required, special 4-wire-plus-ground input cables and junction boxes are required. See Figure 27 for
wiring details.
6.13 Seismic Floor Anchors
Seismic anchors are available for anchoring the unit to a concrete floor to meet seismic Zone 4 requirements.
See 4.1 - Leveling and Anchoring the Unit to the Floor on page 8 for more information. Installation details are
provided in Figures 10 through Figure 12.
6.14 Seismic Floor Stand
Seismic floor stands in four heights—18", 24", 30" and 36" (457mm, 610mm, 762mm and 914mm)—are available
for the Liebert STS2. The stands can be fastened to the floor to meet seismic Zone 4 requirements. See 4.0 -
Locating the Liebert STS2 and Figures 29 through 40 for instructions and details for installing seismic floor
stands.
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