Manufacturing technology
Longrod Insulators
Post Insulators
Hollow Core Insulators
Medium Voltage Insulators
Porcelain hollow core insulators acc. to IEC, ANSI and customer standards are produced with cylindrical, conical or straight inner and outer appearance up to a maximum length of 2800 mm in one piece. These insulator types are produced to withstand high mechanical forces such as inner pressure and cantilever. The design of these insulators is tailor-made to customer requirements. Lapp is capable of producing special shapes by applying latest state of the art manufacturing tools and technology.
Dimensions
voltage class 1 - 1100 kV
maximum length 2800 mm (with gluing technology up to 9000 mm)
maximum outside diameter 640 mm
flexible creepage distances up to 40 mm / kV
conical shape (mainly used in bushings and dead tank porcelains)
cylindrical shape (mainly used in live tank systems)
Production Method
wet turning process
C130 high strength alumina porcelain, ultra high strength available C130 HS
glaze colours brown RAL 8017 and grey ANSI 70
Specifications
IEC 62155, IEC 60672, IEC TS 62371
Experience
since 1930
Factories
Wunsiedel
Redwitz
Turda
Application
SF6-insulated switchgears, breakers (life and dead tank designs),
current and voltage transformers, surge arresters, bushings
