Completing the picture

SIL ICONE PRODUCTS for industr ia l usemedium vol tage BUSBAR SYSTEMS

based on experience is the future

1999 nKt a/s, denmark, merged with felten & GuilleaumeKabelwerke Gmbh in Germany to form nkt cables groupGmbH with headquarters in cologne. nkt cables group GmbHis owned by nKt holding a/s, an industrial group of companiesemploying some 8.800 people.

developing and manufacturing of house service boxes, cabledistribution cabinets and cable accessories up to 145 kV isone of the core businesses of nkt cables group GmbH. sincemore than 60 years nkt cables GmbH nordenham, Germany(formerly f&G Kabelgarnituren Gmbh) is one of the worldmarket leaders in power cable accessories.

as the first company introducing silicone rubber terminationsalready in the sixties, nkt cables GmbH, nordenham is special-ized in production of silicone rubber power cable accessories.the product range covers cable joints, cable connectors forsf6-switchgears and transformers as well as indoor- and out-door terminations.

tailored products are complementing the product spectrum,e.g. the bus bar system for interconnection of sf6-switchgears,which was established in 1993. until now more than 180.000busbars where installed from our international customers. addi-tionally a large assortment of accessories for our busbar systemis available.

in our housing department cable distribution cabinets, meteringpillars, house service boxes, street lightning cabinets and readysolutions for controlling, traffic lights and many more applica-tions were produced.

nkt cables GmbH

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Special products for industrial use

High flexibility by own building of moulds

at our work we can manufacture Grp and silicone moulds with-in shortest time according to your desires. With our processingcentres also complex forms can be provided flexibly and fast.Many years of experience and continuing education enables ourteam to realise even ambitious shapes and moulds for.

usage modern cad systems for tool design enables a visualsimulation of finally designed parts and moulds. rejections andinjections miss are avoided. short start up time of the tool is theresult. the time needed from order intake until production releaseof mould is very short an so tooling costs are relatively low.

Silicone instead of rubber

rubber is considered as cheap material; but if it concerns theelectrical and mechanical characteristics, silicone is the materialof the superlative. silicone also under direct sunlight won’t be-come inflexible or expose plasticiser. after releasing the moulds,the silicone parts will be tempered one more time. thus allvolatile silicone components interlace to a homogeneous unit.as proof: a fresh rubber product (and also from other plastics)has a „aromatic“ smell. this odour develops from evenly thesevolatile components, e.g. plasticiser. silicone products do notsmell, from the machine nor after long weathering. thus siliconeis even food safe and taste neutral.

also the other characteristics of silicone are excellent: especiallythe tear strength plays a prominent role: other materials destroythemselves with a damage by a laceration, while silicone keepsstable because its cross-linking mesh structure. silicone isweather and age-stably, uV and ozone-steadily, durably water-rejecting and not inflammable. not least silicone is halogen- andflue gas missions free.

Silicone rubber

silicone rubber is a preferred material for cable accessories dueto its excellent mechanical and electrical properties. for morethan 40 years silicone has been used successfully as high-qual-ity electrical insulation for voltages up to 400 kV. silicone rubberfeatures high quality electrical insulation, superior corona andtracking resistance, combined with high elasticity.

it facilitates multi range application, where one silicone rubberbody can be used for various conductor cross sections. optimalflexibility ensures easy assembly of the accessories. outstand-ing features of the silicone rubber insulation material are:

✓ uV and ozone resistance✓ durable✓ weather and aging resistance✓ non-flammable, self-extinguishing, heat resistant✓ applicable for use at temperatures between -50° c and +180° c✓ high elasticity✓ high tracking resistance✓ no conductive material deposition✓ unlimited storage life✓ environmentally friendly

property dimension Value standard

track resistance 2,5 kV;6 kV

- passed hK-class 1

Vde 0441

Volume resistivity at 23° Ω x cm 8 x 1014 din 53482

dielectric losses factor tan δ < 0,004 din 53483

dielectric strength kV / mm > 20 din 53481

dielectric constantat 50 hz

er 2,8 ±0,2 din 53483

temperature resistance °c -50 ... + 180(permanent)up to + 250(short periods)

iec 216

arc resistance sec. 250 astM495-61

flammability,self-extinguishing

- V0 uL 94

ozone stability - no tearing din 53509

uV- stability - > 2000 h xenon-test1200

thermal conductivity W / m x K 0,25 ... 0,30 din 52612

stretch to tear % > 450 din 53504

tensile strength n / mm² > 8 din 53504

tear resistance n / mm > 20 din 53515

shore a hardness,approx.

- 30 - 50 din 53505

specific gravity g / cm³ 1,10 - 1,17 din 53479

Busbar system withend- and cross adapterscreened cross- and end-adapter and screened busbar for sf6insulated switchgears with metal housing, connecting type caccording to en 50180, en 50181 and din 47636, max. systemvoltage up to 24 kV, continuous nominal current 630/1250 a**.

✓ variable busbar length from 226 - 1586 mm possible✓ fitting to all switchgears✓ quick and easy assembly✓ screening by outer conductive layer✓ integrated stress control system✓ various accessories available

· surge arrester· cable connector, coupling connector· voltage transformer adapter

✓ capacitive measuring point

Scope of delivery✓ 3 cross- or end adapter✓ 3 covering caps✓ 3 insulating plugs✓ 3 threaded bolts✓ 6 contact shells✓ 3 earthing strands✓ 1 assembly instructions✓ accessories

Busbar system 24 kV up to 1250 A

type reference no.

end adapter 26 129 72 (1 set)

cross adapter 26 129 73 (1 set)

bus bar 26 450 ..* (1 piece)

*= length acc. to application

technical data

Maximum system voltage 24 kV

rated current 1250 a

partial discharge at 2 u0 <10 pc

alternating withstand voltage (ac, 5 min.) 57 kV

direct withstand voltage (dc, 15 min.) 76 kV

impulse withstand voltage 125 kV

thermal short-circuit 3s 25 ka

dynamic short-circuit 63 ka

**for 1250 a appropriate bushing is mandatory

Ø~32

L *+2-0

max.630/1250 a**

max.1250 a

max.630/1250 a**

~225Ø~54

127

~24083

*length acc. to applicationL = Field distance = busbar length + 14 mm

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Busbar system with couplingend- and coupling crossadapterscreened coupling cross- and coupling end adapter andscreened busbar for sf6 insulated switchgears with metal hous-ing for connection to screened busbar systems, max. systemvoltage up to 24 kV, continuous nominal current 630/1250 a**.

✓ doubling of the current load-carrying capacity byparallel feed

✓ variable busbar length from 226 - 1586 mm possible✓ quick and easy assembly✓ screening by outer conductive layer✓ integrated stress control system✓ various accessories available

· surge arrester· cable connector, coupling connector· voltage transformer adapter

✓ capacitive measuring point

Scope of delivery✓ 3 coupling cross- or coupling end adapter✓ 3 threaded bolts✓ 6 contact shells✓ 3 earthing strands✓ 1 assembly instructions✓ accessories

Double busbar system 24 kV up to 2500 A

type reference no.

coupling end adapter 26 219 70 (1 set)

coupling cross adapter 26 219 71 (1 set)

busbar 26 450 ..* (1 piece)

*= length acc. to application

technical data

Maximum system voltage 24 kV

rated current 2500 a

partial discharge at 2 u0 <10 pc

alternating withstand voltage (ac, 5 min.) 57 kV

direct withstand voltage (dc, 15 min.) 76 kV

impulse withstand voltage 125 kV

thermal short-circuit 3s 25 ka

dynamic short-circuit 63 ka

**for 1250 a appropriate bushing is mandatory

127

137

~365

L *+2-0

Ø~32 max.1250 a

max.630/1250 a**

max.630/1250 a**

max.1250 a

max.1250 a

max.1250 a

Ø~54

83 ~240

*length acc. to applicationL = Field distance

= busbar length + 14 mm

Busbar system 36 kV up to 1250 A

Busbar system with end- andcross adapterscreened cross- and end adapter and screened busbar for sf6insulated switchgears with metal housing, connecting type caccording to en 50180, en 50181 and din 47636, max. systemvoltage up to 36 kV, continuous nominal current 630/1250 a**.

✓ variable busbar length from 226 - 1586 mm possible✓ fitting to all switchgears✓ quick and easy assembly✓ screening by outer conductive layer✓ integrated stress control system✓ various accessories available

· surge arrester· cable connector, coupling connector· voltage transformer adapter

✓ capacitive measuring point

Scope of delivery✓ 3 cross- or end adapter✓ 3 covering caps✓ 3 insulating plugs✓ 3 threaded bolts✓ 6 contact shells✓ 3 earthing strands✓ 1 assembly instructions✓ accessories

Ø~32

max.630/1250 a**

max.1250 a

max.630/1250 a**

~240

127

~225Ø~54

L *+2-0

83

type reference no.

end adapter 26 129 52 (1 set)

cross adapter 26 129 53 (1 set)

busbar 26 451 ..* (1 piece)

*= length acc. to application

technical data

Maximum system voltage 36 kV

rated current 1250 a

partial discharge at 2 u0 <10 pc

alternating withstand voltage (ac, 5 min.) 81 kV

direct withstand voltage (dc, 15 min.) 108 kV

impulse withstand voltage 170 kV

thermal short-circuit 3s 25 ka

dynamic short-circuit 63 ka

**for 1250 a appropriate bushing is mandatory

*length acc. to applicationL = Field distance = busbar length + 14 mm

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Busbar system with end- andcross adapterscreened cross- and end adapter and screened busbar for sf6insulated switchgears with metal housing, max. system voltageup to 36 kV, continuous nominal current 2000/2500 a, depend-ing upon the switchgear. special bushing according to nkt spec-ifications or bushing type f necessary.

✓ variable busbar length from 582 - 1182 mm possible✓ quick and easy assembly✓ screening by outer conductive layer✓ integrated stress control system✓ various accessories available

· surge arrester· cable connector, coupling connector· voltage transformer adapter

✓ capacitive measuring point✓ This cross- and endadapter is also for connection

to bushing type C available

Scope of delivery✓ 3 cross- or end adapter✓ 3 covering caps✓ 3 insulating plugs✓ 3 threaded bolts✓ 6 contact shells✓ 3 earthing strands✓ 1 assembly instructions✓ accessories

Busbar system 36 kV up to 2500 A

Ø~50

max.2500 a

max.2500 a

max.2500 a

~275

Ø~74

~260

~160

L *+2-0

type reference no. bushing type f

end adapter 26 129 88 (1 set)

cross adapter 26 129 89 (1 set)

busbar 26 484 ..* (1 piece)

*= length acc. to application

technical data

Maximum system voltage 36 kV

rated current 2500 a

partial discharge at 2 u0 <10 pc

alternating withstand voltage (ac, 5 min.) 81 kV

direct withstand voltage (dc, 15 min.) 108 kV

impulse withstand voltage 170 kV

*length acc. to applicationL = Field distance

= busbar length + 18 mm

type reference no. bushing type c

end adapter 26 526 88 (1 set)

cross adapter 26 526 89 (1 set)

CSA 24 for connection ontobusbar systems for 24 kVcsa 24 is a metal oxide surge arrester with silicone rubber con-nector housing. incoming over voltage waves and voltage in-crease by reflection are limited. Minimum total length is achievedby direct link of the surge arrester onto cross- or end adapter.

✓ extremely short installation depth✓ quick and easy assembly✓ integrated stress control system✓ capacitive measuring point

Surge arrester

Scope of delivery✓ 3 surge arrester✓ 3 threaded bolts✓ 3 earthing strands✓ 1 assembly instructions✓ accessories

~245

L *

technical data csa 24-5 csa 24-10

continuous operating voltage uc 24 kV 24 kV

rated voltage ur 30 kV 30 kV

nominal discharge current in 5 ka 10 ka

partial discharge at 24 kV < 5 pc < 5 pc

residual voltage at:

- steep current impulse5/10 ka, 1/20 µs

88,6 kV 85,6 kV

- long duration current impulse100 a, 30/60 µs

63,7 kV 60,2 kV

- lightning current impulse5/10 ka, 8/20 µs

80,0 kV 80,0 kV

dimension L 350 mm 320 mm

type reference no. (1 set)

csa 24-5 26 357 92

csa 24-10 26 357 93

Further alternatives concerning continuous operating voltageUc and nominal discharge current In upon request.

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CC 24/36-630 for connectionof cables onto busbar systemscc 24/36-630 are a screened coupling connector made of siliconerubber for connection onto busbar systems. it is linked directlyonto cross- or end adapter.

✓ short installation depth✓ quick and easy assembly✓ screening by outer conductive layer✓ integrated stress control system✓ only 2 versions cover 25 up to 300 mm²✓ use of various cable lug types:

· mechanical (screw type)· hexagonal pressing· deep indent pressing

✓ cable sheath testing without dismantling of connector✓ capacitive measuring point

Scope of delivery✓ 3 coupling connectors✓ 3 stress cone✓ 3 conductor cable lugs (optional)

✓ 3 earthing cable lugs✓ 3 earthing strands✓ 1 assembly instructions✓ accessories

Coupling connector

~245

CC 24-630*1 for connection of 12/20(24) kVcables onto busbar systems

conductor crosssection (mm²)

size ofstress cone

stretch range overinsulation

(mm)

reference no.(M12*1)

basic set withoutcable lug

25 - 95 type 02 12,7 - 25,0 26 353 87

95 - 300 type 03 21,2 - 34,6 26 353 88

*1 matching to adapter 26 129 52 / 53 /70 / 71 / 72 / 73*2 matching to adapter 26 129 88 / 89

CC 36-630*2 for connection of 12/20(24) kVcables onto busbar systems

conductor crosssection (mm²)

size ofstress cone

stretch range overinsulation

(mm)

reference no.(M16 *2)

basic set withoutcable lug

25 - 70 5003 17,0 - 24,3 26 332 94

95 - 240 5005 21,2 - 33,5 26 332 95

300 5027 28,9 - 40,0 26 332 96

CC 36-630 for connection of 18/30(36) kVcables onto busbar systems

conductorcross section

(mm²)

size ofstress cone

stretch range overinsulation

(mm)

reference no.(M12*1)

reference no.(M16 *2)

basic set without cable lug

25 - 35 5003 17,0 - 24,3 26 332 97 26 332 94

50 - 150 5005 21,2 - 33,5 26 332 98 26 332 95

150 - 300 5027 28,9 - 40,0 26 332 99 26 332 96

Coupling pieces

the cross- or end adapter can be coupled by the coupling piecesKo 630 and Ko 1250 to raise the current per phase significant.

Voltage transformer adapter type aVt for connection of voltagetransformers with connection type b or c onto end- or crossadapter.

Voltage transformer adapter

With the screened busbar end an extensible termination of theswitchgearfield is realisable. further high-voltage tests at theswitchgear are possible.

Busbar end for busbarsystems up to 1250 A

~272

~440

127

215

L

Ø~32

type reference no. (1 piece)

busbar end L = 195 mm*1 26 132 97

busbar end L = 276 mm*1 26 132 99

busbar *2 31 459 93

type Max. current reference no. (1 set)

Ko 630 set*1 630 a 31 700 82

Ko 1250 set*1 1250 a 31 700 88

type connection type reference no. (1 set)

aVt 36-630 M12*1 c 26 129 42

aVt 36-400 M16*2 b 26 129 39

aVt 36-400 M12*1 b 26 129 40

*1 matching to adapter 26 129 52 / 53 /70 / 71 / 72 / 73

*2 matching to adapter 26 129 88 / 89

*1 matching to adapter 26 129 52 / 53 /70 / 71 / 72 / 73

*2 matching to adapter 26 129 88 / 89

*1 matching to adapter 26 129 52 / 53 /70 / 71 / 72 / 73

*2 matching to adapter 26 129 88 / 89

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Special products of siliconeexamplescreate new ideas with the material of the future! silicone is theideal material, if it concerns electrical and non electric applica-tions. on this page you can find some examples, which specialrequirements can be realized with us.

· components with ingrained metal devices· ingrained stress control elements from conductive silicone· one piece constructions with indentation· mouldings with up to 6 litre filling volume· different colours· complex structures· conductive coating

optional your construction unit also can be packed with acces-sories (assembly instructions, small material etc.) and ready fordispatch.

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Completing the picture

nkt cables GmbHCable AccessoriesHelgoländer Damm 75D-26954 Nordenham

Phone: +49 (0) 4731/364-436Fax: +49 (0) 4731/364-364

E-Mail: info.nordenham@nktcables.comInternet: www.nktcables-acc.com