Bushing insulators and accessories for power and distribution transformers

From 2000 on Comem Research Department projected and developed a thermoplastic insulating material which is a valid and convenient alternative to porcelain even in low voltage insulators for outdoor applications. This has been possible thanks to its physical and electric features.
Polymeric bushing, at present available with rated voltage 1kV and rated current 250A, derived from this research.

Distinctive electric data:

nominal rated current: 250A

nominal rated voltage: 1kV

dry and wet power frequency withstand voltage test: 10kV

impulse withstand voltage dry test: 20kV

frequency: 15Hz - 60Hz

minimum creepage distance: 79mm

arcing distance: 61mm

lee protected line: 10mm

chosen material in order to grant best performances from -40° C to +120° C

reference Standard: as there are no reference standards, we considered EN50386, IEC60137.

Please contact our Sales Department in case you need further information and/or catalogues.