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Installation
Each unit is shipped with this instruction bulletin which will be
located inside the switch compartment door. These instruc-
tions should be reviewed prior to placing unit on pad.
Recommended Pad Layout
Figure 2. Typical Pad Layout
Placement of Unit
Remove unit from shipping pallet per handling procedures of
Page 2 (Figure 1). When unit has been correctly oriented and
placed on pad (Figure 2), verify that unit is level and shim if nec-
essary between unit base and pad. Secure unit to pad using
four (4) tie-down clips as furnished (see Figures 3 and 4). Check
compartment door operation for any binding due to enclosure
distortion and re-shim if necessary. A recessed grouting
should then be applied between unit base and pad to prevent
entry of foreign objects.
Customers Pad
Corner Detail
Figure 3. Typical Anchor Bolt Location
601 Old Airport Road • Bristol, VA 24201 Phone (276) 669-4084 • FAX (276) 669-1869 • www.federalpacific.com • ISO9001:2015
PSI-X
Base of Cabinet
Anchor Bolt
5/8-11 Anchor
Bolts (by others)
Recommended
Figure 4. Bolting Units to Pad
Barrier System Removal
The use of interphase, phase-to-ground, and dual purpose
front barriers enhances the operation of pad-mounted switch-
gear by field personnel. The standard barrier system for Type
PSI pad-mounted switchgear is the patented drawout barrier
system which maintains all the features of a barrier system and
permits the removal of all barriers from a compartment during
initial installation and cable termination when the switchgear
is completely de-energized and grounded.
Removal of the barriers is readily accomplished as follows:
1. The unit must be completely disconnected from all power
sources, tested for voltage and grounded before barrier
removal is attempted.
2. Open main door and secure with door keeper.
3. Remove the dual purpose barriers from their normal hang-
ing position. If the optional B4/B5 barrier is provided, it must
be removed before dual purpose barriers may be accessed
(see page 4).
4. Rotate barrier retaining latches to vertical position. (Figure 5)
5. Grasp nylon pull loops located at upper corners of viewing
window and withdraw barrier assembly approximately 12
inches. (Figure 6)
6. Grasp side-support angles located at upper sides and
remove barrier assembly from unit. (Figure 7)
7. Place barrier assembly and components in convenient
location. (Figure 8)
8. Barrier system may be re-installed by reversing the steps
above.
SECTION IB-1G-500
INSTALLATION & OPERATION INSTRUCTIONS
PAD-MOUNTED SWITCHGEAR TYPE PSI
REV. 1.6 - NOVEMBER 2017
4 Tie Down
Plates Provided w/Unit
Cabinet
Pad Section
PAGE 3
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