medium voltage BUSBAR SYSTEMS SILICONE PRODUCTS for industrial use Completing the picture
based on experience is the future nkt cables GmbH 1999 nkt a/s, denmark, merged with felten & Guilleaume Kabelwerke Gmbh in Germany to form nkt cables group GmbH with headquarters in cologne. nkt cables group GmbH is owned by nkt holding a/s, an industrial group of companies employing some 8.800 people. developing and manufacturing of house service boxes, cable distribution cabinets and cable accessories up to 145 kv is one of the core businesses of nkt cables group GmbH. since more than 60 years nkt cables GmbH nordenham, Germany (formerly f&g Kabelgarnituren Gmbh) is one of the world market leaders in power cable accessories. 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 180.000 busbars where installed from our international customers. additionally a large assortment of accessories for our busbar system is available. in our housing department cable distribution cabinets, metering pillars, house service boxes, street lightning cabinets and ready solutions for controlling, traffic lights and many more applications were produced. as the first company introducing silicone rubber terminations already in the sixties, nkt cables GmbH, nordenham is specialized in production of silicone rubber power cable accessories. the product range covers cable joints, cable connectors for sf6-switchgears and transformers as well as indoor- and outdoor terminations.
Silicone rubber silicone rubber is a preferred material for cable accessories due to its excellent mechanical and electrical properties. for more than 40 years silicone has been used successfully as high-quality electrical insulation for voltages up to 400 kv. silicone rubber features high quality electrical insulation, superior corona and tracking resistance, combined with high elasticity. property dimension Value standard track resistance 2,5 kv; - passed hkclass Vde 0441 6 kv 1 Volume resistivity at 23 Ω x cm 8 x 10 14 din 53482 dielectric losses factor tan δ < 0,004 din 53483 dielectric strength kv / mm > 20 din 53481 dielectric constant at 50 hz e r 2,8 ±0,2 din 53483 temperature resistance c -50... + 180 (permanent) up to + 250 (short periods) iec 216 arc resistance sec. 250 astm 495-61 flammability, self-extinguishing - V0 ul 94 ozone stability - no tearing din 53509 uv- stability - > 2000 h xenon-test 1200 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 it facilitates multi range application, where one silicone rubber body can be used for various conductor cross sections. optimal flexibility ensures easy assembly of the accessories. outstanding 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 Special products for industrial use High flexibility by own building of moulds at our work we can manufacture Grp and silicone moulds within shortest time according to your desires. With our processing centres also complex forms can be provided flexibly and fast. Many years of experience and continuing education enables our team to realise even ambitious shapes and moulds for. usage modern cad systems for tool design enables a visual simulation of finally designed parts and moulds. rejections and injections miss are avoided. short start up time of the tool is the result. the time needed from order intake until production release of 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 the electrical and mechanical characteristics, silicone is the material of the superlative. silicone also under direct sunlight won t become inflexible or expose plasticiser. after releasing the moulds, the silicone parts will be tempered one more time. thus all volatile 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 these volatile components, e.g. plasticiser. silicone products do not smell, from the machine nor after long weathering. thus silicone is even food safe and taste neutral. also the other characteristics of silicone are excellent: especially the tear strength plays a prominent role: other materials destroy themselves with a damage by a laceration, while silicone keeps stable because its cross-linking mesh structure. silicone is weather and age-stably, uv and ozone-steadily, durably waterrejecting and not inflammable. not least silicone is halogen- and flue gas missions free. 3
Busbar system 24 kv up to 1250 A Busbar system with end- and cross adapter screened cross- and end-adapter and screened busbar for sf6 insulated switchgears with metal housing, connecting c according to en 50180, en 50181 and din 47636, system voltage up to 24 kv, continuous nominal current 630/**. 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 technical data Maximum system voltage rated current partial discharge at 2 u 0 alternating withstand voltage (ac, 5 min.) direct withstand voltage (dc, 15 min.) impulse withstand voltage thermal short-circuit 3s dynamic short-circuit end adapter 26 129 72 (1 set) cross adapter 26 129 73 (1 set) bus bar 26 450..* (1 piece) *= length acc. to application **for appropriate bushing is mandatory 24 kv <10 pc 57 kv 76 kv 125 kv 25 ka 63 ka 83 +2 L -0 * ~240 Ø~32 Ø~54 ~225 127 630/** *length acc. to application L = Field distance = busbar length + 14 mm 630/**
Double busbar system 24 kv up to 2500 A Busbar system with coupling end- and coupling cross adapter screened coupling cross- and coupling end adapter and screened busbar for sf6 insulated switchgears with metal housing for connection to screened busbar systems, system voltage up to 24 kv, continuous nominal current 630/**. doubling of the current load-carrying capacity by parallel 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 technical data Maximum system voltage 24 kv rated current 2500 a partial discharge at 2 u 0 <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 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 **for appropriate bushing is mandatory +2 L -0 * 83 ~240 Ø~32 Ø~54 ~365 137 *length acc. to application L = Field distance = busbar length + 14 mm 127 630/** 630/** 5
Busbar system 36 kv up to 1250 A Busbar system with end- and cross adapter screened cross- and end adapter and screened busbar for sf6 insulated switchgears with metal housing, connecting c according to en 50180, en 50181 and din 47636, system voltage up to 36 kv, continuous nominal current 630/**. 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 technical data Maximum system voltage rated current partial discharge at 2 u 0 alternating withstand voltage (ac, 5 min.) direct withstand voltage (dc, 15 min.) impulse withstand voltage thermal short-circuit 3s dynamic short-circuit 36 kv <10 pc 81 kv 108 kv 170 kv 25 ka 63 ka 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 end adapter 26 129 52 (1 set) cross adapter 26 129 53 (1 set) busbar 26 451..* (1 piece) *= length acc. to application **for appropriate bushing is mandatory 83 +2 L -0 * ~240 Ø~32 Ø~54 ~225 127 630/** *length acc. to application L = Field distance = busbar length + 14 mm 630/**
Busbar system 36 kv up to 2500 A Busbar system with end- and cross adapter screened cross- and end adapter and screened busbar for sf6 insulated switchgears with metal housing, system voltage up to 36 kv, continuous nominal current 2000/2500 a, depending upon the switchgear. special bushing according to nkt specifications or bushing 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 C available technical data Maximum system voltage 36 kv rated current 2500 a partial discharge at 2 u 0 <10 pc alternating withstand voltage (ac, 5 min.) 81 kv direct withstand voltage (dc, 15 min.) 108 kv impulse withstand voltage 170 kv bushing f end adapter 26 129 88 (1 set) cross adapter 26 129 89 (1 set) busbar 26 484..* (1 piece) *= length acc. to application 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 end adapter cross adapter bushing c 26 526 88 (1 set) 26 526 89 (1 set) +2 L -0 * ~260 Ø~50 2500 a Ø~74 ~275 ~160 2500 a *length acc. to application L = Field distance = busbar length + 18 mm 2500 a 7
Surge arrester CSA 24 for connection onto busbar systems for 24 kv csa 24 is a metal oxide surge arrester with silicone rubber connector housing. incoming over voltage waves and voltage increase by reflection are limited. Minimum total length is achieved by 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 Scope of delivery 3 surge arrester 3 threaded bolts 3 earthing strands 1 assembly instructions accessories 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 impulse 5/10 ka, 1/20 µs - long duration current impulse 100 a, 30/60 µs - lightning current impulse 5/10 ka, 8/20 µs 88,6 kv 85,6 kv 63,7 kv 60,2 kv 80,0 kv 80,0 kv dimension L 350 mm 320 mm (1 set) csa 24-5 26 357 92 csa 24-10 26 357 93 Further alternatives concerning continuous operating voltage Uc and nominal discharge current In upon request. L * ~245
Coupling connector CC 24/36-630 for connection of cables onto busbar systems cc 24/36-630 are a screened coupling connector made of silicone rubber for connection onto busbar systems. it is linked directly onto 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 s: mechanical (screw ) hexagonal pressing deep indent pressing cable sheath testing without dismantling of connector capacitive measuring point ~245 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 CC 36-630* 2 for connection of 12/20(24) kv cables onto busbar systems CC 24-630* 1 for connection of 12/20(24) kv cables onto busbar systems conductor cross section (mm²) size of stress cone stretch range over insulation (mm) (M16 * 2 ) basic set without cable lug conductor cross section (mm²) size of stress cone stretch range over insulation (mm) (M12* 1 ) basic set without cable 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 25-95 02 12,7-25,0 26 353 87 95-300 03 21,2-34,6 26 353 88 CC 36-630 for connection of 18/30(36) kv cables onto busbar systems conductor cross section (mm²) size of stretch range over stress cone insulation (mm) (M12* 1 ) * 1 matching to adapter 26 129 52 / 53 /70 / 71 / 72 / 73 * 2 matching to adapter 26 129 88 / 89 (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 9
Coupling pieces the cross- or end adapter can be coupled by the coupling pieces Ko 630 and Ko 1250 to raise the current per phase significant. Max. current (1 set) Ko 630 set* 1 630 a 31 700 82 Ko 1250 set* 1 31 700 88 * 1 matching to adapter 26 129 52 / 53 /70 / 71 / 72 / 73 * 2 matching to adapter 26 129 88 / 89 ~440 215 127 Voltage transformer adapter Voltage transformer adapter avt for connection of voltage transformers with connection b or c onto end- or cross adapter. connection (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 ~272 * 1 matching to adapter 26 129 52 / 53 /70 / 71 / 72 / 73 * 2 matching to adapter 26 129 88 / 89 Busbar end for busbar systems up to 1250 A With the screened busbar end an extensible termination of the switchgearfield is realisable. further high-voltage tests at the switchgear are possible. Ø~32 (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 L * 1 matching to adapter 26 129 52 / 53 /70 / 71 / 72 / 73 * 2 matching to adapter 26 129 88 / 89
Special products of silicone examples create new ideas with the material of the future! silicone is the ideal material, if it concerns electrical and non electric applications. on this page you can find some examples, which special requirements 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 accessories (assembly instructions, small material etc.) and ready for dispatch. 11
nkt industrial products - edition 1. 9. 2009 subject to alterations printed in Germany / www.ostedruck.de technische Änderungen vorbehalten nkt cables GmbH Cable Accessories Helgoländer Damm 75 D-26954 Nordenham Phone: +49 (0) 47 31 /364-436 Fax: +49 (0) 47 31 /364-364 E-Mail: info.nordenham@nktcables.com Internet: www.nktcables-acc.com Completing the picture