Manufacturing technology
Longrod Insulators
Post Insulators
Hollow Core Insulators
Medium Voltage Insulators
Porcelain station post insulators according to IEC, ANSI and other standards are used in substations and related switching equipment. They are produced in single piece up to 2300 mm and can operate voltages up to 1100 kV in stacked configuration. Post insulators are subjected to compression, cantilever and torsional loads during service.
Dimensions
voltage class 1 - 1100 kV (> 245 kV in stacked configuration)
maximum length 2300 mm
maximum core diameter 288 mm
flexible creepage distances up to 55 mm / kV
conical shape (mainly used when dimensioning acc. to IEC standards)
cylindrical shape (mainly used when dimensioning acc. to ANSI standards)
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 60273, IEC 60168, IEC 60672
Experience
since 1930
Factories
Wunsiedel
Redwitz
Turda
Application
busbar supports in substations, disconnect switches (post insulator and operating insulators)
Platform supports for compensation systems
