Hubbell Power Systems Uni-Grip Deadends Installation guide

Brand
Hubbell Power Systems
Model
Uni-Grip Deadends
Type
Installation guide
FARGO®
INSTALLATION INSTRUCTIONS
UNI-GRIP DEAD ENDS
FOR ACSR CONDUCTOR
The Uni-Grip deadend assembly for ACSR consists of a prefilled aluminum body with pre-compressed eye or
clevis, and a steel core gripping unit (or two gripping units to be installed in tandem). Assembly may also
include 15, pre-filled aluminum jumper terminals and terminal mounting hardware. The dead end pad is angled
at 15, which permits either a 30 or straight jumper take-off. Deadend tube is marked to show FARGO, catalog
number, conductor size stranding and type, required die size & minimum press size. Repair deadends have
catalog number marks that include suffix “XL” followed by and the damaged conductor cutout length in inches.
1. Prior to installation the conductor must be clean, straight and in lay. Any bend in the conductor section
inserted into the deadend will tend to make the deadend body bow during compression.
2. Mark the conductor from the end at a distance equal to the insertion length. The insertion length is the
distance from the mouth of the dead end to the knurl.
3. Cut-mark the aluminum strands at a distance equal to the length of the gripping unit (or gripping unit pair if
two supplied with deadend) plus one (1) steel core diameter. Tape the aluminum strands ½” beyond cut
mark, to hold them in lay during cutting. Expose the steel core by cutting away the aluminum strands to the
cut mark. Be careful not to nick the steel core while cutting away the aluminum strands.
4. Install the gripping unit (or tandem pair if two supplied with deadend) onto the exposed steel core. Ensure
that the steel core exits the rear of the gripping unit. If serving wire was used to keep steel core in lay,
assure it lies outside the gripping unit, or is removed. DO NOT twist the core grip on the steel core.
5. Remove tape wrap. With a clean stainless steel wire brush (V-brush type recommended), aggressively
brush the aluminum conductor over the entire crimp zone. Immediately apply a generous coat of FARGO
Joint Compound Type UJC over the entire compression length of the aluminum conductor.
DO NOT REMOVE ANY FACTORY-FILLED JOINT COMPOUND FROM DEADEND TUBE
6. Remove the protective plastic and end plug from the dead end. Insert the conductor with core grip installed
into the mouth of the dead to the full insertion length marked in step 2. Once inserted, avoid pulling the
conductor back out as the core grip may come off the conductor core and be difficult to retrieve.
7. Select the proper compression die set as indicated on the dead end body. Mount die halves in press and
lubricate die faces and the entire compression zone of the deadend body with die lubricant stick, clean oil or
clean plastic bag material (if plastic used as lubricant, ensure that it wraps completely around the deadend
tube, fully covering both die face during each compression). Make the first compression at the knurled ring
and continue crimping toward the tapered end. Ensure die closure with each crimp and overlap crimps by
an amount necessary to prevent the formation of ridges between adjacent crimps. Continue crimping to the
tapered end. To minimize bowing of the deadend, keep the compression zone lubricated equally at both die
faces and fully seat deadend body in one die half as dies close.
8. As compressions are completed, wipe off excess joint compound as it is expelled from the deadend body.
Remove any die flash and file or sand for a smooth appearance.
9. Refer to separate instruction sheet for installing the jumper loop terminal. Deadends installed at EHV will
require terminal pad shielding if installed without jumpers.
DO NOT COMPRESS IN THE REVERSE DIRECTION
DO NOT APPLY TENSION TO THE CONDUCTOR PRIOR
TO COMPLETION OF ALL COMPRESSION
INS 883 (05/23/09) HUBBELL POWER SYSTEMS, INC.
Printed in U.S.A. Leeds, AL 35094 1908830000
  • Page 1 1

Hubbell Power Systems Uni-Grip Deadends Installation guide

Brand
Hubbell Power Systems
Model
Uni-Grip Deadends
Type
Installation guide
Download PDF
report

Ask a question and I''ll find the answer in the document

Finding information in a document is now easier with AI

Related papers

Other documents