FEDERAL PACIFIC PSE Installation instructions

1075 Old Airport Road • Bristol, VA 24201 Phone [phone] • FAX [phone] • www.federalpacic.com • ISO9001:2015
SECTION IB-2B-800A
SUPPLEMENT TO INSPECTION AND MAINTENANCE RECOMMENDATIONS
TYPE PSE DEAD-FRONT PAD-MOUNTED SWITCHGEAR
JUNE 2021
Page 1
Restoring Type PSE Dead-Front
Pad-Mounted Switchgear
Following Immersion in Flood Waters
Supplement to Inspection and Maintenance Recommendations
(Instruction Bulletin IB-2B-800)
© 2021 Electro-Mechanical Corporation
These training requirements would include, but are not limited, to the following
key points:
• The skills and techniques necessary to distinguish exposed energized parts
from other parts of electrical equipment.
• The skills and techniques necessary to determine the proper approach
distances corresponding to the voltages to which the qualied person will be
exposed.
• The proper use of the special precautionary techniques, personal protective
equipment, insulating and shielding materials, and insulated tools for working
on or near exposed energized parts of electrical equipment.
• Tasks performed less often than once per year have additional training
requirements.
These instructions are intended only for such qualied persons. They are not
intended to be a substitute for adequate training and experience in safety
procedures for this type of equipment. Additionally, the recommendations in
this instruction bulletin are not intended to supersede or to take the place of
established utility safety guidelines and established practices. If there is any
question, consult with your foreman or supervisor, as appropriate.
Please refer to OSHA 29 CFR 1910.399 and NFPA 70E Articles 100 and 110.
Qualied Persons
The equipment covered by this publication must be selected for a specic
application and it must be operated and maintained by Qualied Persons
who are thoroughly trained and knowledgeable in the installation, operation,
and maintenance of underground power distribution equipment along with
the associated hazards that may be involved.This publication is written only
for such qualied persons and is not intended to be a substitute for adequate
training and experience in safety procedures for this type of equipment. Proper
installation is the responsibility of the operating and construction personnel and
the utility performing and authorizing the work. Completion of these instructions
implies no further warranty by the manufacturer.
A Qualied Person is dened in the National Electrical Code (NEC/NFPA-70) as:
One who has skills and knowledge related to the construction and operation of
the electrical equipment and installations and has received safety training to
recognize and avoid the hazards involved.
The specic electrical safety training requirements to be considered a qualied
person are detailed in NFPA-70E, Article 110.1(D), Employee Training. Some
of the requirements from the 2012 edition are shown below. For the specic
detailed training requirements for a Qualied Person make certain to refer to the
most recent applicable edition.
WARNING

1075 Old Airport Road • Bristol, VA 24201 Phone [phone] • FAX [phone] • www.federalpacic.com • ISO9001:2015
SECTION IB-2B-800A
SUPPLEMENT TO INSPECTION AND MAINTENANCE RECOMMENDATIONS
TYPE PSE DEAD-FRONT PAD-MOUNTED SWITCHGEAR
JUNE 2021
Page 2
This supplement is to be used in conjunction with Instruction Bulletin
IB-2B-800, “Inspection and Maintenance Recommendations for Dead-Front
Pad-Mounted Switchgear, Type PSE”. All Caution, Warning, Danger, and other
Notes in that document apply to this supplementary document.
Air insulated switchgear, be it Live-Front (PSI) or Dead-Front (PSE), is not
designed to be submersible. Once water touches, or comes in proximity
to, energized parts or interrupting components, there is a substantially
increased probability of immediate electrical failure or delayed electrical
or mechanical failure of the switchgear. This supplement addresses the
corrective actions to address exposure to a submerged condition.
When conditions warrant, barriers and insulators can be cleaned with a
non-alcohol and non-solvent based cleaner that does not leave a residue
when dry. Any residue must be removed. Any barrier showing swelling or
warping should be replaced.
When cleaning components, NEVER use any industrial strength cleaners.
NEVER apply lubricants to the probe contact or the tulip contact, which
aretheinterruptingcontacts.NEVER use any solvent-based or ammable
products on any components in the pad-mounted switchgear. Solvents
and ammable products can attack non-metallic components of the
equipment and reduce electrical and mechanical properties.
Before Opening the Switchgear
Thefollowinginspectionandmaintenanceproceduresmustbeperformed
with the current-carrying parts completely de-energized and isolated from
voltage. Any attempt to perform the inspection and maintenance with
the current-carrying parts energized may result in electrical arc ash that
can cause equipment damage, personal injury or death.
Initial Inspection after Flooding Event
1. If water has reached the oor-plate in the medium voltage compartment
of a PSE dead-front pad-mounted switchgear unit (the top of the base
spacer or bottom of the switchgear, if there is no base spacer), then action
must be taken to preserve and restore the switchgear.
The switchgear must be completely de-energized from all sources before
anyattemptis madeto enterswitchgear.Follownormal system operating
practices to de-energize the unit, test for voltage and ground the unit
before any work is performed.
2. If the switchgear has been submerged above the level of the switch
interrupters or the fuse-mounting interrupters, the user may want to
consider replacement, since it will be difcult to fully clean the interiors
of the interrupters, reassemble,and realign them by other than factory
personnel.
Standard Cleaning and Maintenance
3. Perform the Inspection and Maintenance functions recommended
in Federal Pacic Instruction Bulletin IB-2B-800, including cleaning
materials, lubrication, as well as the recommendations and procedures
contained in this supplement.
Barriers, viewing windows 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.
Flooded Switchgear - Additional Steps
4. PSE Dead-Front Switchgear which has been ooded and is deemed
suitable for restoration to service will require the additional inspection,
cleaning, and maintenance.
Current carrying parts must be completely de-energized from all sources
before any maintenance is performed on these parts. Follow normal
system operating practices to de-energize, test for voltage and ground
these parts before any work is performed. Any attempt to perform the
inspection and maintenance with the current-carrying parts energized
may result in electrical arc ash that can cause equipment damage,
personal injury or death.
a. Remove the roof. There are six sets of clamps and bolts (three on each
side) in the termination compartments.
b. Remove the internal barriers.Take care not to damage barriers during
removal or reinstallation.
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.
c. Remove and clean or discard (and replace with new) the screened vent
screens at the bottom of the medium-voltage compartment.
d. Rinse the interior of the switchgear with low pressure clean water and
ush out any debris or water-soluble surface contaminants.
e. Clean the bus, the interrupters,the support insulators, and the barrier
boards.
f. Rinse thoroughly with clean water
g. Dry with compressed air or other similar approved means.
h. After cleaning and drying,inspect all insulators and bushings to make
certain there is no surface damage,including any imbedded perma-
nent discolorations or cracks.
• All damaged, discolored,or cracked insulators must be replaced.
i. After cleaning anddrying,inspect all barriers,make certain thatthere is
no surfacedamage,including any imbeddedpermanent discoloration
or warping.
• All discolored barriers must be replaced.
• Warped barriers must be inspected to make certain that correct
“Electrical Clearances” are met, as specied in Table 1, and replace
if necessary.
NOTICE
WARNING
WARNING
WARNING
WARNING
DANGER

1075 Old Airport Road • Bristol, VA 24201 Phone [phone] • FAX [phone] • www.federalpacic.com • ISO9001:2015
SECTION IB-2B-800A
SUPPLEMENT TO INSPECTION AND MAINTENANCE RECOMMENDATIONS
TYPE PSE DEAD-FRONT PAD-MOUNTED SWITCHGEAR
JUNE 2021
Page 3
j. After cleaning and drying, inspect all metallic components of the
switches and fuse mountings for corrosion. Operating components
such as door latching mechanisms, springs, probes, switchblades,
contacts,bus, ground studs andground bars,and hardwareitems,such
as nuts, bolts, washers, etc. displaying corrosion must be replaced.
k. Lubrication of Non-Current Carrying Parts – Non-current carrying parts,
such as operating mechanisms,hinges and latches, may be lubricated
with anylubricants that theuser has determinedto be suitablefor such
applications.
l. Lubrication of Current Carrying Parts – NYE Reolube 363 is the only
approved lubricant for current carrying parts, as listed below. Apply
only a thin coat of lubricant.
• Fuse panel main contact stab.
• Contact interface at the fuse-mounting lower contact (hinge end).
• Contact interface at the fuse-mounting upper contact (receiver).
• Main-contact stab (stationary contact) on the Auto-jet®switches.
m. Install new vent plugs (or re-install cleaned existing plugs) at the bottom
of the medium voltage compartment.
n. Verify that all bolts remain torqued for tightness and circuit continuity.
o. Reinstall the barriers.
p. Remove the old roof gasket and install a new roof gasket.
q. Ensure that the roof and interior are dry before re-installing.
r. Verify the integrity of terminations in accordance with the terminator
manufacturer’s recommendations. Replace any cable accessories or
other third party components as appropriate.
s. Verify the integrity of SML-20 components and end ttings, FP-3097
end ttings, SMU-20 and DBU fuse units/rell units and SML-4Z fuse
holders and rell units in accordance with the fuse manufacturer’s
recommendations.
• All fuses and fuse rell units in the switchgear which were not
sealed and known to be free of moisture must be considered to be
potentially damaged and are to be discarded and replaced.
• A silencerthat has beensubmerged mustbe replacedas anyresidue
inside may clog the exhaust path and cause a misoperation of the
fuse assembly when a subsequent fuse operation occurs.
t. Replace instruction manuals and any damaged or obscured name-
plates, ratings labels and hazard alerting signs (DANGER, WARNING,
and CAUTION) of the pad-mounted switchgear.
u. BEFORE RETURNING THE SWITCHGEAR TO SERVICE:
i. With the equipment de-energized, perform one or two mechani-
cal operations of each switch and fuse mounting to verify correct
operation and alignment as described in Federal Pacic Instruction
Bulletin IB-2A-210 – “Instructions for Installation and Operation,
Type PSE. Dead-Front Pad-Mounted Switchgear, 15kV – 25kV.”
ii. Verify the integrity of the insulation system in the equipment by
applying high potential testing in accordance with applicable
industry standards and the utility standard operating practices.
iii. As the combined effect of having many components submerged
in water, which may have been polluted with heavy levels of
contamination, and where there is a potential for hidden dam-
age or hazards to go unnoticed, it is recommended that the unit
be energized by a means the is initiated from a location OTHER
THAN by operating the components such as switches and fuses
in the specic switchgear unit being returned to service. For this
purpose, Federal Pacic has developed a CO2actuated Portable
Remote Operating Mechanism (PROM). Refer to Federal Pacic
for details on this product.
5. If there is any doubt or suspicion about any component, it should be
replaced.
Replacement Parts and Labels
If parts or labels are required, they may be ordered by contacting your local
Federal Pacic Representative. A directory of the representatives can be found
at www.federalpacic.com. You may also contact Federal Pacic directly
at 276-669-4084.
If parts or labels are ordered, the unit serial number must be provided along
with the part description.
Table 1 — Recommended Electrical Clearances
15kV, 25kV
Pad-Mounted
Unit Rating
kV BIL
Recommended Clearances (minimum, in inches)
Phase-to-Phase
or
Phase-to-Ground
Without
Barrier
Phase-to-Phase
or
Phase-to-Ground
With Barrier
Energized
Bus
(or device)
to Barrier
Barrier-to-Ground
in Vicinity
of
Energized Bus
(or device)
Terminator
or
Insulator
Skirts
to Barrier
95 5-1/2" 3" 1" 3/4" 1/2"
125 7-1/2" 5" 2-1/4" 2" 1-1/4"
CAUTION
Do not put any lubricant on switch probe or puffer contacts. Refer to
Inspection Bulletin IB-2B-800, section 10, "Lubrication of Current
Carrying Parts".

1075 Old Airport Road • Bristol, VA 24201 Phone [phone] • FAX [phone] • www.federalpacic.com • ISO9001:2015
SECTION IB-2B-800A
SUPPLEMENT TO INSPECTION AND MAINTENANCE RECOMMENDATIONS
TYPE PSE DEAD-FRONT PAD-MOUNTED SWITCHGEAR
JUNE 2021
Page 4
Every effort is made to ensure that customers receive an up-to-date instruction manual on the use of Federal Pacic products; however, from time
to time, modications to our products may without notice make the information contained herein subject to alteration.
Notes:
© 2021 Electro-Mechanical Corporation