High voltage cable accessories 72 kV up to 245 kV

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Silicone rubber is a preferred material for cable accessoriesdue to its excellent mechanical and electrical properties.For more than 40 years silicone has been used successfullyas high-quality electrical insulation for voltages upto 400 kV. Silicone rubber features high quality electricalinsulation, superior corona and tracking resistance,combined with high elasticity. It facilitates multi rangeapplication, where one silicone rubber body can beused for various conductor cross sections. Optimalflexibility ensures easy assembly of the accessories.

Vydal: nkt cables s.r.o. Autor: nkt cables

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.............11 KSEV/KTEV 72-145 ................................ 5 Stress contol ........................................... is dimensioned such way that field intensities not ex- ceed any point...................................................................................................................................................................................... In order achieve sufficient insulating clearance, the outer conductive layer the cable must stripped below the end the core......................... Silicone rubber features high quality electrical insulation, superior corona and tracking resistance, combined with high elasticity................ 17 Certificates ...................................................................................................................... 13 Joints SM 72-245 ........................................................................................... 7 FEV 72-245-V ..................... 8 FEV 72-245-P ............. 14 SME 72-245 ...................................................................... Optimal flexibility ensures easy assembly the accessories.............................................................................. 18/19 04 Silicone rubber and Stress control Silicone rubber preferred material for cable accessories due its excellent mechanical and electrical properties............................................................................................................................................. This prevents harmful corona partial discharge...................................................................................................................................................... Figure shows the field the cable termination controlled capacitively funnel shaped electrode..... 16 Cable data ........................................... 5 Terminations THV ....................... 2 The product range ................................................. Conductor Core isulation Field lines Outer conductive layer Equipotential lines Screening wires Outer sheath Stress cone Conductor Equipotential lines Core isulation Field lines Outer conductive layer Outer sheath Screening wires g Electrical field with capacitive stress contol (figure 2) 05 g Electrical field without stress contol (figure 1) g NEW g NEW .............................................................................................. 12 KSEV/KTEV 123-300 ......................................................................................................................... facilitates multi range application, where one silicone rubber body can be used for various conductor cross sections...................................................... 15 Others Accessories ..................... 3 Silicone rubber ........................................................... 10 SEV/TEV 72-170 ......................................................................................................................................................................................................................................................................................................Table content General Profile ..... 9 KFEV 123-145 . • and ozone resistance • Durable water rejection • Weather and aging resistance • Non-flammable, self-extinguishing, heat resistant/applicable for use temperatures between -50°C and +180°C • High elasticity • High tracking resistance • Unlimited storage life • Friendly the enviroment Outstanding features the silicone rubber insulation material are: The specific electrical problems the cable termination are found the point between the high-grade solid elec- trical insulation the cable and the gaseous insulation air which has significantly lower dielectric strength................................. For more than years silicone has been used success- fully high-quality electrical insulation for voltages up to 400 kV................................................................................................ 6 THV 100-145 ................................. This causes unacceptably high field intensities the end the outer conductive layer (see figure which must eliminated means special measures.........................................................................................................................