3M QS4-15JCN-350-750 Instructions Manual Download Page 1

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™

Cold Shrink QS4 Integrated

Splice Kit QS4-15JCN-350-750

for Jacketed Concentric Neutral (JCN)
and Flat Strap Neutral Cable
Instructions

IEEE Std. 404

15 kV Class

150 kV BIL

CAUTION

Working around energized systems may cause serious injury or death. Installation should

be performed by personnel familiar with good safety practice in handling electrical

equipment. De-energize and ground all electrical systems before installing product.

Kit Selection Table

Kit Number

Cable Insulation O.D. Range

Conductor Size Range

QS4-15JCN-350-750

1.04"–1.70"

(26,4–43,2 mm)

350–750 kcmil*

(185–325 mm

)

* Splices (including size transitions) can be made to smaller or larger conductors (but larger conductors may require special neutral

handling), provided both cables are within the Insulation O.D. Range and the connector meets the dimensional requirements
shown below.

Connector Dimensional Requirements

Minimum Inches (mm)

Maximum Inches (mm)

Outside Diameter

0.80" (20,3 mm)

1.84" (46,7 mm)

Length

Aluminum (Al/Cu) Compression

—

6.75" (171 mm)

Length

Copper Compression and 3M

™

Shearbolt Connector QCI 350-750

—

7.50" (191 mm)

January 2014

78-8127-8864-0-C

Summary of Contents for QS4-15JCN-350-750

Page 1: ...e Kit Number Cable Insulation O D Range Conductor Size Range QS4 15JCN 350 750 1 04 1 70 26 4 43 2 mm 350 750 kcmil 185 325 mm2 Splices including size transitions can be made to smaller or larger conductors but larger conductors may require special neutral handling provided both cables are within the Insulation O D Range and the connector meets the dimensional requirements shown below Connector Di...

Page 2: ...ubber Mastic Tape 2228 Rolls 2 x 36 2 ea e Scotch Mastic Strips 2230 6 length 9 ea f Cold Shrink Adapter Tube 1 ea g 3M Cable Cleaning Pads CC 3 1 ea h Cut back Template 1 ea i Wire Brush 1 ea j Instruction Booklet 1 ea Cold shrink adapter tube may not be included in all kits Note Do not use knives to open plastic bags Note Connector not shown but if included it is indicated on the packaging label...

Page 3: ...24 mm Cable Jacket Neutral Wires Insulation Semi con 4 102 mm 8 1 4 210 mm Figure 1 2 3 Clean or cover cable jacket 30 760 mm from jacket edge on side where splice body will be parked 2 4 Select a Scotch Mastic Strip 2230 from the kit and remove white release liners Using light tension apply a single wrap of mastic at the edge of the cable jacket and partially over the neutral wires Figure 2 Cable...

Page 4: ...e jacket edge under the neutral wires Figure 3 Knead mastic around neutral wires Insulation Semi Con Neutral Wires Scotch Mastic Strip 2230 Scotch Mastic Strip 2230 Fold mastic strip in half lengthwise Bend neutral wires over cable jacket Figure 3 2 6 Apply an additional single wrap of Scotch Mastic Strip 2230 at the edge of the cable jacket and partially over the neutral wires Overwrap mastic wit...

Page 5: ...le jacket Figure 5 3 0 Install Connector Note If using a crimp type connector go to step 3 3 3 1 If using a 3M Shearbolt Connector QCI 350 750 refer to the instructions included with the connector for insulation cut back dimension Insulation removal length shall not exceed 3 1 2 89 mm from conductor end Figure 6 Refer to connector instructions for dimensions Figure 6 3 2 Install 3M Shearbolt Conne...

Page 6: ...uminum connector crimped with a specific tool and die Aluminum Al Cu Crimp Connector Growth Chart Conductor Size Typical growth allowance per end 350 500 kcmil 1 4 6 mm 750 kcmil 3 8 10 mm Note 1 Copper connectors do not require a length change allowance 2 Maximum aluminum connector crimped length allowed is 7 50 191 mm One half connector length growth allowance Figure 8 3 4 For 350 and 500 kcmil ...

Page 7: ...inhibitor from connector ends Figures 10 and 11 File sharp connector flashing if necessary taking care to remove all metal filings from splice area Antioxidant Compound Figure 10 Connector Figure 11 4 0 Install Splice 4 1 Apply a tape marker to semi con insulation shield on cable which does not contain splice Measure 10 254 mm from center of connector Figure 12 Tape Marker Semi con 10 254 mm Figur...

Page 8: ...igure 14 Note This core installs differently than other cold shrink products 4 5 Position the splice body over connector area aligning end of the splice body not the core at the center of the tape marker Slowly start to remove the splice core by pulling and unwinding the loose core end counterclockwise allowing only 6 mm of the splice to shrink onto the tape marker Carefully slide the splice body ...

Page 9: ...and tighten the shield sleeve outward and secure it along with the ground braid if not grounding externally to the neutral wires on either side of the splice using two constant force springs on each end between the vinyl tape at the jacket edge and the vinyl tape as shown Figure 16 5 3 If shield sleeve extends beyond neutral wires it may be interwoven with the constant force springs Trim excess gr...

Page 10: ...If shield sleeve extends beyond neutral wires it may be interwoven with the constant force springs Trim excess ground braid if needed Cinch tighten the spring after wrapping the final winding Figure 18 Ground Braid Constant Force Springs Cable Jacket Rejacketing Tube Vinyl Tape Figure 18 5 8 Place one mastic sealing strip on the cable jacket under the solder block of the ground strap no farther th...

Page 11: ...ile as low as possible For C tap or H tap connectors position flat against the cable Crimp connector following the connector manufacturer s recommendations Figure 22 Ground Wire Connector Ground Braid Figure 22 6 2 Cut one mastic sealing strip into two equal pieces Place one piece on the cable jacket centered under the ground wire near the jacket end Roll two mastic strips into small rolls Place o...

Page 12: ... mastic and ground wire Press the mastic around the ground wire and to the cable jacket Figure 24 Second Half Mastic Strip Ground Wire Figure 24 6 4 Wrap two half lapped layers of vinyl tape over the ground connector Figure 25 Vinyl Tape Ground Wire Mastic Seal for Ground Wire Figure 25 ...

Page 13: ...ure 27 If grounding was applied apply tape over mastic strips 2 rubber mastic 2 rubber mastic Figure 26 Stretch and tear off last 1 2 25 50 mm of rubber mastic Figure 27 7 2 Remove the clear plastic wrap Install the rejacketing tube by twisting the tube not the yellow liner from side to side to start the movement Then slide and unroll the tube over the constant force springs and rubber mastic Figu...

Page 14: ...ct optional grounding Note In applications where the splice is regularly exposed to high levels of ultra violet radiation i e direct sunlight wrap two half lapped layers of Scotch Super 33 Vinyl Electrical Tape or Scotch Vinyl Electrical Tape Super 88 over the re jacketing tube ...

Page 15: ... 1 3 U 2 H 7 8 2 H 7 8 3 u C l A 2 1 0 0 2 0 0 4 4 T R A 2 3 U 1 4 H 4 9 4 H 4 9 2 2 u C 4 1 0 0 1 0 0 5 2 R 4 3 A 2 T R 4 3 U 3 n w o r B 3 H 7 8 2 u C l A 4 1 0 0 2 0 0 5 4 T R A 4 3 U 1 3 H 6 0 1 4 H 6 0 1 2 2 u C 4 1 0 1 1 0 0 5 4 R 4 3 A 3 T R 4 3 U 4 n w o r B 4 H 7 8 3 u C l A 0 0 5 I C 0 0 5 3 T R A 4 3 U 3 H 6 0 1 3 u C l A 6 1 0 0 2 0 0 6 4 T R A 6 3 U 1 3 H 5 1 1 3 3 u C 9 1 0 0 1 0 5 7...

Page 16: ... writing by an authorized officer of 3M Warranty Limited Remedy Limited Liability This product will be free from defects in material and manufacture at the time of purchase 3M MAKES NO OTHER WARRANTIES INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE If this product is defective within the warranty period stated above your exclusive remedy sh...

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