Raychem Switchgear &Transformer TerminationSHVT & THVT for 72 kVup to 170 kV

Energy Division

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Tyco Electronics Raychem GmbH Energy DivisionFinsinger Feld 1 85521 Ottobrunn/Munich, Germany

Phone: +49-89-6089-0 Fax: +49-89-6096345

http://energy.tycoelectronics.com

Energy Division – innovative and economical solutions for the electrical power industry: cable accessories, connectors & fittings, insulators & insulation, surge arresters, switching equipment, lighting controls, Power Measurement and Control.

All of the above information, including drawings, illustrations and graphic designs, reflects our present understanding and is to the best of our knowledge and belief correct and reliable.Users, however, should independently evaluate the suitability of each product for the desired application. Under no circumstances does this constitute an assurance of any particular qualityor performance. Such an assurance is only provided in the context of our product specifications or explicit contractual arrangements. Our liability for these products is set forth in our standard terms and conditions of sale. Raychem, TE Logo and Tyco Electronics are trademarks.

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ApplicationThe switchgear termination for voltageclasses up to 170 kV is designed to beinstalled in cable entry housings of gas-insulated switchgear (GIS). It complieswith IEC 60859 and IEEE 1300 stan-dards, which essentially specify theinterfaces between the termination andthe switchgear. Therefore the termina-tion will fit into all GIS complying withthese standards. The termination oper-ates in SF6 but also in insulating liquidslike transformer oil. A corona shield atthe top of the transformer terminationthen provides the necessary shieldingof the terminal.

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1 Corona shield (THVT only)2 Connector (mechanical or crimp)3 Resin housing4 Oil-filling5 Stress cone6 Fixing ring7 Base plate8 Gland and sealing

Major Design ElementsThe epoxy-resin insulator (3) with embedded electrode forms the gas pressure-tight interface between GIS or transformer cable entry and the oil-filled cablecompartment of the termination. It is attached to the cable entry housing withthe fixing ring (6). To fit the cable conductor, torque-controlled shear-off bolt connectors (2) or crimp-type connectors are available. The connector is suit-able for stranded aluminium and copper conductors and can be modified toaccept solid conductors as well. No special tool is required to install themechanical connector. Heat-shrinkable polymeric tubing containing oil-resistantsealant encapsulates the connector barrel and the polymeric insulation transition.The silicone rubber stress cone (5) provides the electrical field control and caneasily be applied without tools owing to its excellent elasticity. The interfacebetween stress cone, cable insulation and resin housing is filled with silicone oil(4). Filling and venting nozzles are available at the top bolt assembly and at thebase of the termination. A corona shield (1) can be easily attached to the trans-former termination for use in insulating liquids. Compared with IEC 60859 andIEEE 1300 wider clearances apply in this application. The cable outer serving isadapted through a gland system (8), which addresses the individual shieldingand armouring. Heat-shrinkable tubings are used to seal the cable gland. Theconventional mounting position is vertical. For horizontal or upside-downmounting an optional oil expansion vessel is available.

Features• Si-oil filling• Dimensions comply with IEC 60859

and IEEE 1300• Pressure-tight resin housing• Operates in SF6 and insulating

liquids• Pre-fabricated and factory tested

Si-rubber stress cone• Torque-controlled conductor bolt• No special tools required to install

the termination• Isolated cable gland for sectionali -

zation• Type tested according to IEC 60840,

IEC 60859 and IEEE 1300 standards

Raychem Switchgear & Transformer Termination for 72 kV up to 170 kV

SHVT & THVT

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