Thomas & Betts 160GLR Installation Manual

R

IS---0269

IS---160/370GLR

December 2004

Page 1 of 3

Installation & Operating Instructions

160GLR & 370GLR

GROUNDING ELBOW

CONTENTS: Grounding Elbow, Lubricant (DO NOT SUBSTITUTE), Installation/Operating Instruction

The grounding elbow is designed to provide plug--in, visible grounding for UD systems. The 160GLR provides an operating
interface for connecting to anANSI/IEEE STD 386 Fig. 5, 15kV class (nominal 8.3kV phase--to--ground and 14.4kV phase--to-­phase) 200 ampere loadbreak bushing or accessory device with fault close rating of 10,000 amperes, symmetrical,
10 cycles max.

The 370GLR provides an operating interface for connecting to an ANSI/IEEE STD 386 Fig. 7, 25kV class (nominal 15.2kV
phase--to--ground and 26.3kV phase--to--phase) or 35kV class (nominal 21.1kV phase--to--ground and 36.6kV phase--to-­phase) 200 ampere loadbreak bushing or accessory device with fault close rating of 10,000 amperes, symmetrical,
10 cycles max.

DANGER

All apparatus must be de--energized during installation
or removal of part(s). For loadbreak products follow
operating instructions. All deadbreak connectors must
be de--energized before operating. All 200A deadbreak
connectors must be mechanically secured with bails
when connected.

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.

Excess distortion of the assembled product may result
in its failure.

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

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
arenot 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.

3. Read entire installation instructions before starting.

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

IS---0269 IS --- 160/370GLR

December 2004
Printed in U.S.A.

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

Protective

Cap

Warning

Ta g

Ground Lead

Grounding

Elbow

Operating

Eye

IS---0269

December 2004
Page 2 of 3

STEP A GROUNDING

Connect lead on grounding elbow to system ground. Leave
enough slack in ground lead for hotstick operation of the
grounding elbow.

STEP B LUBRICATION

Remove protective cap and apply a light, uniform coat of
supplied lubricant, working thoroughly into surface.

CAUTION: EXCESS LUBRICANT may prevent the

grounding elbow from being fully seated in the “locked on”
position. Keep the internal mating surface free from dirt and
grime.

Connect Lead

to Ground

Remove

Protective

Cap

Lubricate

IMPORT ANT: Do not insert grounding elbow into bushing unless circuit has been tested and shown to be “de--energized”.

STEP C PREPARATION

ENSURE THAT THE SYSTEM IS DE--ENERGIZED WITH EITHER OF THE FOLLOWING PROCEDURES:

Indirect Test using Capacitive Test

1.

WARNING: THE VOLT AGE TEST POINT IS A CAPACITANCE DEVICE, IT IS NOT DIRECTLY CONNECTED TO

THE CONDUCTOR. Do not use conventional voltage measuring equipment. Follow the manufacturer’s directions for the
meter that is used. Test with a suitable sensing device, made for use with separable connectors manufactured with
capacitive test points, to determine if cable is energized. Contamination, moisture, dirt, etc. around the test point or use
of the wrong measuring equipment can provide a false “no voltage” indication on an energized elbow. To prevent
serious or fatal injury treat the elbow as energized until the “no voltage” test point indication is confirmed by other means.

Direct Test using 370TR Test

2. Remove existing elbow or insulated cap from the bushing with a hotstick following the applicable loadbreak operating

instructions (IS--167/168LR, IS--273/274LR or IS--375/376LR). Firmly tighten a hotstick to the 370TR test rod operating
eye. Insert the test rod into the bushing. Using a meter capable of direct reading the system voltage, check the test rod
disc for voltage. Remove test rod.

IMPORTANT: If voltage is indicated by either of the two preceding procedures, do not proceed without de--energizing

the system.

CAUTION: The hotstick eye and disc of the test rod are not insulated; be careful to keep them clear from ground until

tested “de--energized”.

1. 2.

Points

Rod

Operating

Eye

Tes t

Point

Tes t R od D i s c

Hotstick

370TR

Tes t R od

IS---0269

December 2004

Page 3 of 3

IF MEASUREMENT INDICATES THE SYSTEM IS DE--ENERGIZED PROCEED WITH STEP D.

DANGER: Continue to treat the system as energized using a hotstick for all operations in case of error or equip-

ment malfunction. Ground lead must be connected to system ground before connecting elbow to bushing. If ground
connection is dislodged when elbow is connected to bushing remove elbow before reattaching ground lead.
DO NOT OPERATE BY HAND.

STEP D CONNECTION

1. Firmly tighten a hotstick to the grounding elbow operating eye.

2. Place the grounding elbow receptacle area over the bushing, inserting the probe approximately 1 to 2 inches into
the bushing.

3. Firmly thrust the grounding elbow home with a fast, straight motion, which will engage the internal lock of the grounding
elbow into the bushing interface.

4. To return the loadbreak elbow to the apparatus bushing and to remove the grounding elbow, reverse the operational
sequence, following the applicable loadbreak--loadmake operating instructions.

Hotstick

Ground

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