Thomas & Betts 3702-A1 Installation Manual

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April 2010

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Installation Instructions

3702A1

Loadbreak Feed--Thru Insert

CONTENTS: Loadbreak feed--thru insert, Stainless steel plate, Stainless steel hook bolts, Stainless steel wing nuts,

Lubricant, Installation Instructions.

The 3702A1 is designed to provide the apparatus interface and loop feed--thru for Elastimold 35kV class (21.1kV phase--to-­ground) loadbreak connectors. The bushings provide a vent ring for improvedswitching performance. This product isidentified
by a white button installed into one grounding eye.

DANGER

All apparatus must be de--energized during installation
or removal of part(s) except for test point caps and
indicators that can be installed and operated
energized.
After installation loadbreak products can be operated
energized per operating instructions. All deadbreak
connectors must be de--energized before operating.
All apparatus must be installed and operated in
accordance with individual user, local, and national
work rules. These instructions do not attempt to
provide for every possible contingency.
Do not touch or move energized products.

“Loadbreak connectors must be operated with a full
insulated “hotstick” type live -- line tool.” Consult the
company’s safe work practices for the required
live--line tool length.

FOR MORE INFORMATION ON PARTS, INSTALLATION RATINGS AND COMPATIBILITY, CALL THE NEAREST ELASTIMOLD OFFICE.

Excess distortion of the assembled product may result
in its failure.
Inspect parts for damage, rating and compatibility with
mating parts.
This product should be installed only by competent
personnel trained in good safety practices involving
high voltage electrical equipment. These instructions
are not intended as a substitute for adequate training or
experience in such safety practices.
Failure to follow these instructions will result in
damage to the product and serious or fatal injury.
If this product is supplied with a protective shipping
cover(s), remove this shipping cover(s) and replace
with the appropriate HV insulated cap(s) or
connector(s) before submerging or energizing the
circuit.

IMPORTANT

1. Check contents of package to ensure they are complete
and undamaged.

2. Check all components to ensure proper fit with cable
and/or mating products.

STEP 1

When installing a 3702A1 feed--thru insert in a clampable
apparatus bushing well, check the height of the mounting
bolts. Hardware which protrudes more than 1/2” (12mm)
above the top of the apparatus bushing well will prevent the
feed--thru insert from being assembled. If this condition ex­ists, consult with apparatus manufacturer on proper method

to shorten bolts.

.500” (12.7mm)

FOR ALL WELLS MAX

CLAMP

TANK

3. Read entire installation instructions before starting.

4. Have all required tools at hand and maintain cleanliness
throughout the procedure.

STEP 2

Inspect the apparatus bushing well to ensure it is dry and
free from all contaminants. Lubricate the bushing well and
outer well surface and the bushing well interface and cuff
area of the feed--thru insert with the supplied lubricant or
ELASTIMOLD approved lubricant. DO NOT SUBSTITUTE.
Other lubricants may be harmful to this product or its mating
parts.

White Marker

Lubricate

Protective
Caps

Lubricate

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IS---3702A1

April 2010
Printed in U.S.A.

8155 T&B Boulevard, Memphis, Tennessee 38125
(800) 888--0211 Fax: [phone]

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April 2010

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STEP 3

Place the lubricated portion of the feet--thru insert in the apparatus bushing well and rotatefeed--thru insert clockwise until fully
seated. DO NOT FORCE. Over tightening may damage threads of bushing well. The feed--thru insert has been designed with
a special 180_ adjustment feature. Feed--thru insert may now be rotated counter--clockwise up to a half turn to obtain desired
alignment. A definite stop will be felt at the end of the 180_ adjustment range.

Protective
Caps

STEP 4

FEED--THRU INSERT MUST BE ASSEMBLED WITH HOLD--DOWN BAIL. Assemble “A” hook bolt in available upper
bushing well tab. Assemble plate over threaded end of bolt with detents upward towards operator. Use hole in plate which
allows the most vertical position of hook bolt. Assemble wing nut. Assemble “B” hook bolt and wing nut. Engage hook of hook
bolt into lower bushing well tab. Swing hook bolt up into slot of plate, using slot which allows the most vertical position of hook
bolt. Tighten wing nuts securely by hand.

A

Plate

B

STEP 5

Push a lengthof copper wire, No. 14 AWG (2.5mm@) or equivalent, throughone of the groundingholes onthe feed--thru insert.
Make a small loop and twist tightly, taking care not to damage the conductive shield. Connect free end ofthe wire to the system
ground using a suitable connector.

The electrostatic grounding wire should be installed in such a manner so as not to contact the bushing interface or adjacent
bushing interfaces or interfere with the placement of accessories on nearby parking stands.

This step provides assurance that the conductive shield on the feed--thru insert is grounded.

To System

Ground

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STEP 6

Remove protective shipping caps from feed--thru insert. Thoroughly wipe the bushing interfaces clean of any contaminants
and lubricate with the supplied lubricant or ELASTIMOLD approved lubricant. DO NOT SUBSTITUTE. Other lubricants may
be harmful to this product or its mating parts. Install the mating products to the feed--thru insert following the instructions

supplied with the mating products.

If feed--thru insert is not to be immediately mated with elbow connector(s) and/or insulated cap(s) and/or grounding
elbow(s), do not remove shipping caps. Do not energize or submerge apparatus with the shipping caps on the
feed--thru insert. This is a protective cap only which is not insulated or water tight and only intended to keep the bushing plug

surfaces clean during handling and installation.

To System Ground

Clean and Lubricate

Clean and Lubricate

To System Ground

To System Ground

STEP 7 SEATING INDICATION

Complete assembly of an insulated cap or elbow is indicated by no portion of the yellow band being visible when viewed from
the side.

8155 T&B Boulevard, Memphis, Tennessee 38125
(800) 888--0211 Fax: [phone]