3M 5458A-IJ Manuale utente

3M™ Cold Shrink Integrated Splice

Kit QS-III 5458A-IJ

for Jacketed Concentric Neutral (JCN) Cable

Instructions

IEEE Std. 404

25/28 kV Class

200 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

5458A-IJ 1.24"–2.07"

(31,5–52,6 mm)

500–1000 kcmil*

(240–500 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DimensionalRequirements

Minimum Inches (mm) Maximum Inches (mm)

Outside Diameter 1.05" (26,7 mm) 2.07" (52,6 mm)

Length

Aluminum (Al/Cu) Compression —7.50" (191 mm)

Length

Copper Compression and

3M™ Shearbolt Connector QCI 500-1000

—8.25" (210 mm)

September2010

78-8127-8872-3-B3

 2 78-8127-8872-3-B

1.0 Kit Contents

a. 3M™ColdShrinkIntegratedSpliceBody5458A-IJ(1ea.)

b. ConstantForceSprings(4ea.)

c. RedCompoundTubes(non-siliconegrease)(2ea.)

d. Scotch®RubberMasticTape2228Rolls,2"x48"(2ea.)

e. Scotch®MasticSealingStrips2230,6"length(8ea.)

f. ColdShrinkAdapterTube(1ea.*)

g. 3M™CableCleaningPadsCC-3(1ea.)

h. Scotch®ElectricalShieldingTape24,1"x15'(1ea.)

i. 3M™AluminumFoilTapeStrips1115B,10"length(2ea.)

j. Cut-backTemplate(2ea.**)

k. InstructionBooklet(1ea.)

*Cold shrink adapter tube may not be included in all kits.

**Kits contain either 1 or 2 cut-back templates as needed per conductor size.

Note: Do not use knives to open plastic bags.

Note: Connector not shown, but if included, it is indicated on the packaging label.

78-8127-8872-3-B 3

2.0 Prepare Cables

2.1 Checktobesurethecablefitswithinthekitrangesasshownonthecoverpage.

2.2 Preparecablesaccordingtostandardprocedures.Refertotemplateprovidedorillustrationbelowforproper

dimensions(Figure1).

“A”

“B”

3 1/2"

(89 mm)

Insulation

Semi-Con

Neutral Wires

Cable Jacket

Typical Conductor Size*

kcmil (mm2)

Insulation OD Range

Inches (mm)

Jacket Cutback "A"

Inches (mm)

Semi-con Cutback "B"

Inches (mm)

500**-750

(240-400)

1.24–1.70

(31,5–43,2)

15 3/4

(400)

9 1/4

(235)

1000**

(500)

1.59–2.07

(40,4–52,6)

15 1/4

(387 mm)

8 3/4

(222)

*For 100% and 133% insulation levels, Insulation OD is the ﬁnal determining factor.

**Cables must be within the Insulation OD Range of the splice kit and the connector must meet the dimensional requirements shown on the front page.

Figure1

2.3 Carefullybendthecutneutralwiresupandawayfromthecablesemi-conasshown.FoldoneScotch®Mastic

SealingStrip2230inhalflengthwiseandapplyonewraponlyatcablejacketedgeundertheneutralwires

(Figure2).

Insulation

Semi-Con

Neutral Wires

Scotch® Mastic Sealing Strip 2230

Fold mastic strip in half lengthwise

Figure2

 4 78-8127-8872-3-B

2.4 Markthecablesemi-con4"(102mm)fromthecablejacketedge.Applytwohalf-lappedlayersofScotch®

ElectricalShieldingTape24overthecablesemi-con,startingfromthemasticedgeouttothemarkonthe

semi-conandback.Half-hitchtotieoff(Figure3).

Insulation

Semi-Con

Neutral Wires

Scotch® Mastic Sealing Strip 2230

(102 mm)

Scotch® Electrical Shielding Tape 24

Figure3

2.5 Carefullylayneutralwiresbackdownontopoftheshieldingtapeandpressintomastic.Keepwireprofilelow

byfollowingtheconcentricturninthecable(Figure4).

2.6 Removethelinerfromone3M™AluminumFoilTapeStrip1115Bandsecuretheendsoftheneutralwires.

Wrapthealuminumtapeontopofitselfandtightlypressdownontheedgeofthetapetowardtheendofthe

electricalshieldingtape(Figure4).

Insulation

Semi-Con

Neutral Wires

3M™ Aluminum Foil Tape Strip 1115B

Scotch® Electrical Shielding Tape 24

Press down edge tightly

Figure4

78-8127-8872-3-B 5

2.7 ApplyaScotch®MasticSealingStrip2230overthepreviouslyappliedmasticstripandoverlappingontothe

cablejacket.Kneadmasticaroundneutralwires.Overwrapmasticwithvinyltape,takingcarenottoextend

tapealongneutralwires(Figure5).

Scotch® Mastic Sealing Strip 2230

Overwrap with vinyl tape

Cable Jacket

Figure5

2.8 Cleanorcovercablejacket30"(760mm)fromjacketedgeonsidewheresplicebodywillbeparked.

2.9 Slideintegratedsplicebodyontocleancablejacket,loosecoreendfirst(Figure6).

Loose core end

Integrated splice body

Cleaned cable jacket

Figure6

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500-1000,refertotheinstructionsincludedwiththeconnectorfor

insulationcut-backdimension.Insulationremovallengthshallnotexceed33/4"(95mm)fromconductorend

(Figure7).

Refer to connector instructions for dimensions

Figure7

 6 78-8127-8872-3-B

3.2 Install3M™ShearboltConnectorQCI500-1000accordingtotheinstructionsincludedwiththeconnector

(Figure8).

Connector

Shearbolt

Figure8

Go to section 4.0 “Install Splice.”

3.3 Ifusingacrimptypeconnector,removecableinsulationfor1/2connectorlengthplusanallowance*for

increasesinconnectorlengthduetocrimping.Insulationremovallengthshallnotexceed4-1/8"(105mm)from

conductorend.Donotinstallconnectornow(Figure9).

*Note: This assumes that the installer has determined the increased length of an aluminum connector crimped

with a specific tool and die.

Aluminum (Al/Cu) Crimp Connector Growth Chart

Conductor Size Typical growth allowance (per end)

500 kcmil 1/4" (6 mm)

750–1000 kcmil 3/8" (10 mm)

Note: 1) Copper connectors do not require a length change allowance.

2) Maximum aluminum connector crimped length allowed is 8.25" (210 mm).

One-half connector length

+ growth allowance*

Figure9

78-8127-8872-3-B 7

3.4 For500kcmilcopperconnectors,orconnectorswithanO.D.between1.05–1.24"(26,7–31,5mm):

Parkcoldshrinkadaptertubeoncableinsulation(Figure10).

Cold shrink adapter tube

Figure10

3.5 Installconnector.Seetable(oncover)forproperconnectordimensions.(Forstandard3M™Connectors,refer

totableattheendofthisinstructionforcrimpinginformation).Removeanyexcessoxidationinhibitorfrom

connectorendsifaluminumconnectorisused(Figure11).

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11-1/2"



(292mm)fromcenterofconnector(Figure12).

Tape Marker

Semi-con

11 1/2"

(292 mm)

Figure12

 8 78-8127-8872-3-B

4.2 Ifusingcoldshrinkadaptertube:Positionadaptertubeovertheconnector.Shrinkadapternearcenterof

connectorbypullingandunwindingtheloosecoreendinacounter-clockwisedirection(Figure13).

Cold shrink adapter tube

Figure13

4.3 Cleancablesusingstandardpractice:

 a.Donotallowsolventorabrasivetocontactthecablesemi-conductiveinsulationshield.

 b.Donotreducecableinsulationdiameterbelow1.24"(31,5mm)specifiedforthesplice.

 c.Theinsulationsurfacemustberound,smoothandfreeofcuts/voids.Sandingmaybenecessary,finish

sandingshouldbedonewitha300gritorhigherelectricalgradeabrasive.

 d.Makecertainthatthecableinsulationissmooth,cleananddrybeforecontinuing.

4.4 Applyredcompoundoncableinsulations,makingcertaintofillinedgeofcablesemi-con.Donotuse

siliconegrease(Figure14).

Apply Red

Compound

Apply Red

Compound

Fill semi-con step Fill semi-con step

Figure14

78-8127-8872-3-B 9

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¼"(6mm)ofthesplicetoshrinkontothetapemarker.Carefullyslidethe

splicebodyoffthetapemarkerbypullingandtwistinguntiltheentiretapemarkerisexposed.Continue

removingthecoretocompletethesplicebodyinstallation(Figure15).

Note: The splice body ends must overlap onto the semi-con of each cable by at least 1/2" (13 mm).

Note: Do not push the splice body toward the tape marker as this may cause the end to roll under. If the end

does roll under, DO NOT use sharp-edged tools to pull it out as this could cut and damage the splice.

Unwind Counter-clockwise

Align splice body with tape marker

Figure15

5.0 Connect Shielding

5.1 Removethevinyltapeholdingtheshieldsleeveontherejacketingtube,andspreadtheshieldsleeveouttoward

thecablejacket.

Note: The 3M™ Cold Shrink Integrated Splice Body includes a pre-installed ground braid for external

grounding on either side of the splice body. If not using the ground braid, it may be tied into the ground

system with the shield sleeve using constant force springs as shown below.

5.2 Hand-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

vinlytapeatthejacketedgeandthealuminumfoiltapeasshown.Trimexcessgroundbraidifneeded.Cinch

(tighten)thespringafterwrappingthefinalwinding(Figure16).

Ground Braid

Aluminum Foil Tape beneath Shield Sleeve

Constant Force Springs

Cable Jacket

Rejacketing Tube

Vinyl Tape

Figure16

 10 78-8127-8872-3-B

5.3 Wraptwohalf-lappedlayersofvinyltapeovertheconstantforcesprings(Figure17).

Vinyl Tape

Figure17

6.0 External Grounding (Optional)

Note: Use these instructions if circuit grounding is required at this location.

6.1 Connectagroundwiretothepre-installedgroundbraidontheintegratedspliceusinganappropriateconnector.

Keepconnectorprofile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18).

Ground Wire

Connector

Ground Braid

Figure18

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