601 Old Airport Road • Bristol, VA 24201 Phone (276) 669-4084 • FAX (276) 669-1869 • www.federalpacific.com • ISO9001:2015
SECTION IB-2D-700
INSTALLATION & OPERATION INSTRUCTIONS
PMDF PAD-MOUNTED SWITCHGEAR
NOVEMBER 2017 VER. 2.1
PAGE 6
Terminate cables and install 600 ampere elbows and accessories
following instructions provided by the cable manufacturer and
the elbow manufacturer. The 600 ampere elbows are a dead-
break device and must NOT be removed when the equipment
is energized.
Always follow user’s and manufacturer’s standard operating
procedures when installing, maintaining or removing 200 ampere
loadbreak elbow connectors and accessories. Such procedures
should always include:
1. Verifying the correct circuit is being maneuvered,
2. Installing portable feed-through standoff bushings on the
parking stand adjacent to the loadbreak elbow to be switched,
3. Recognizing that the unit may be subject to back feed and
taking necessary precautions to isolate the equipment from
such possibility before maneuvering 200 amp elbows when
dead-break procedures are to be followed,
4. Testing for voltage, and
5. Grounding the circuits before any other work is attempted.
Bushings
The 600 ampere bushings accommodate 600 ampere elbow
(separable insulated) connectors and accessories. The units
are shipped with a red dust cover over each bushing to prevent
contamination. Dust covers are NOT capable of providing any
electrical insulation at medium voltage levels. Therefore, if an
elbow is not to be connected to a bushing, prior to energization
the dust cover MUST be removed and replaced with an insulating
protective bushing cover.
Always follow user’s and manufacturer’s standard operating
procedures when installing, maintaining or removing 600 ampere
elbow connectors. Such procedures should always include:
1. Opening adjacent load-interrupting devices to completely de-
energize the unit,
2. Recognizing that the unit may be subject to back feed and tak-
ing necessary precautions to isolate the equipment from such
possibility before maneuvering 600 amp elbows,
3. Testing for voltage to verify circuit is de-energized before
maneuvering 600 amp elbows, and
4. Grounding the circuits before any other work is attempted.
Removal of Load-Break Elbows
1. Remove the padlock and fully loosen the penta-head bolt. Pull
and lower the door handle cover to open the active elbow-
compartment door and secure with the windbrace. See Figures
7 through 14.
2. Loosen the two pentahead bolts that secure the passive elbow
compartment door and secure it open using the windbrace.
3. System operating practices may allow loadbreak elbows to
be switched while the associated cable is energized. Follow
loadbreak elbow manufacturer’s procedures for proper tech-
nique when live switching is to be performed using the elbows.
If live switching is not permitted with elbows, appropriately
rated voltage testers should be used to verify that the circuit
is completely de-energized.
4. Using the shotgun clamp stick, install and secure the feed-
through standoff bushing on the parking stand.
5. If live switching of elbows is not permitted for operating
circumstances of the system, test the elbow to be moved for
voltage. After verifying that voltage is not present, or if live
switching is permitted, use the shotgun clamp stick to remove
the elbow connector from the appropriate bushing well, fol-
lowing standard system operating procedures and the elbow
manufacturer’s instructions. Move the elbow connector onto
a standard feed-thru standoff bushing that is placed in the
parking stand.
WARNING
Failure to remove dust covers and replace with a protective
insulating bushing cover prior to energization may result in
equipment damage, personal injury or death.
DANGER
Do not attempt to remove 600 ampere elbows (separable
insulated) connectors when the equipment is energized. Any
attempt to remove 600 ampere elbows while the equipment
is energized will result in equipment damage, personal injury
or death.
DANGER
When removing energized 200 ampere elbows (separable
insulated) connectors, do not allow the elbow probe to
touch any grounded surface. Before working on any cables
or circuits, test for voltage and ground the circuit. Failure to
follow proper procedures while the equipment is energized
will result in equipment damage, personal injury or death.
DANGER
When removing energized 200 ampere elbows (separable
insulated) connectors, do not allow the elbow probe to
touch any grounded surface. Before working on any cables
or circuits, test for voltage and ground the circuit. Failure to
follow proper procedures while the equipment is energized
will result in equipment damage, personal injury or death.
