1075 Old Airport Road • Bristol, VA 24201 Phone (276) 669-4084 • FAX (276) 645-8206 • www.federalpacic.com • ISO9001:2015
SECTION IB-1G-805
INSPECTION & MAINTENANCE RECOMMENDATIONS
PAD-MOUNTED SWITCHGEAR TYPE PSI
JUNE 2021, REV 1.1
Page 2
1. Exercising
Yearly mechanical exercising of the switch is recommended.
Refer to Instruction Bulletin Section IB-1G-500 for information
on operating the switch.
The switchgear must be completely de-energized from all sources
before any attempt is made to enter switchgear. Follow normal
system operating practices to de-energize the unit, test for voltage
and ground the unit before any work is performed.
2. Cleanliness
Check for cleanliness generally, but particularly for accumulation
of any foreign material on insulators and barriers.
Barriers and insulators can be cleaned with a non-alcohol and
non-solvent based cleaner that does not leave any residue when
dry. Residue must be removed.
Clean skirts of cable terminators and surge arrestors in accordance
with instructions provided by the manufacturers of those devices.
3. Barrier Removal
Fuse and Switch Dual-Purpose Barriers should not be left in
the slide-in position for more than one week. Accumulation
of contamination on the barrier may cause tracking that can
ultimately lead to a ashover. Clean any contaminated barrier per
"Maintenance" instructions above.
The use of interphase, phase-to-ground, and dual purpose front
barriers enhances the operation of pad-mounted switchgear by eld
personnel. The standard barrier system for Type PSI pad-mounted
switchgear includes a removable barrier assembly that allows removal
of phase-to-phase and phase-to-ground barriers from both the
switch and fuse compartments during initial installation and cable
termination or at any other time when the switchgear is de-energized.
When removing barriers, care must be taken to keep the barrier clean
and dry. Contamination on barrier can lead to tracking and arcing.
Clean off any contamination with a non-alcoholic and non-solvent
based cleaner that does not leave any residue.
Removal of the barriers is readily accomplished as follows:
a. Completely disconnect the unit from all power sources.
b. Open main door (see "Auto-Latch Features" and "Auto-Latch
Operation" on page 11 of Instruction Bulletin IB-1G-500) and
secure with door keeper.
c. Remove the dual-purpose barriers from their normal hanging
position (see instructions on pages 3 and 4 of Instruction Bulletin
IB-1G-500). If the optional B4/B5 barrier is provided, it must be
opened and secured before dual-purpose barriers may be accessed
(see page 4 of Instruction Bulletin IB-1G-500).
d. Test for voltage, and ground the unit using the user's standard
practice procedures and using grounding clamps suitable for the
short-circuit rating of the equipment.
e. See "Barrier System Removal" on pages 3 and 4 of IB-1G-500
for instructions on the procedure to follow when removing the
barrier system.
f. Barriers may be reinstalled by following the reverse procedure
to that described on pages 3 and 4 of IB-1G-500.
g. Dual purpose barriers may then be reinstalled.
h. Do not leave dual-purpose barriers in the slide-in position for
more than one week.
4. Switch Operation
Do not put any lubricant on switch probe or puffer tulip contacts. Refer
to section "11. Lubrication". Placing any lubricant on the probe or tulip
contacts (in the puffer assembly) will result in a disruptive event that may
cause equipment damage.
Check switch for proper operation refer to Instruction Bulletin IB-
1G-500. If the switch is closed on a short circuit within the fault
closing rating and the short circuit is cleared by circuit breakers or
fuses, the switch will not sustain damage which would require major
repairs. However, the switch should be inspected before returning
to service to determine switch condition. See Lubrication. Slight
arcing on switchblades and contacts can be burnished smooth
with an emery cloth or paper.
5. Fuse Operation
Open and close fuses and insure proper latching. Refer to
pages 8 and 9 in IB-1G-500. Inspect fuse contact interfaces for
damage and overheating, which will be evidenced by distortion
or discoloration of the contacts. Note that contacts are copper
and may be silver plated. There will be normal oxidation of these
parts. Slight irregularities can be burnished with an emery cloth
or paper. See "Lubrication".
6. Replacement Parts
If parts or labels are required they may be ordered by contacting
Federal Pacic at 276-669-4084 or your local Federal Pacic Sales
Territory Manager or Manufacturer's Representative. A directory
of the representatives can be found at www.federalpacic.com. If
parts are ordered, the unit serial number and date of manufacture
must be provided along with the part description.
7. Electrical Clearances
Check for proper electrical clearances as described in
Recommended Clearances.
NOTICE
WARNING
WARNING
DANGER
CAUTION
