With semi-conductive glaze on insulator head,our radio free pin type insulators is able to reduce the high electrical stresses and virtually eliminate corona discharges and radio interference. We currently offer low-, medium- and high-voltage pin type insulators that meet all ANSI standards.In ANSI standard,pin type insulators are normally defined as 55 series and 56 series,including:
55-1 pin type insulators,55-2 pin type insulators,55-3 pin type insulators,55-4 pin type insulators,55-5 pin type insulators.
56-1 pin type insulators,56-2 pin type insulators,56-3 pin type insulators,56-4 pin type insulators,56-5 pin type insulators,these insulators are made of porcelain and used on distribution lines below 33KV mainly.
Here are specifications and drawings for ANSI 56 series ceramic insulators.
![ANSI pin type insulator 56 series](http://localhost/wp-content/uploads/2013/04/56-spec-1.jpg)
ANSI pin type insulator 56 series
![ANSI 55 series insulator](http://localhost/wp-content/uploads/2013/04/55-series-spec2.jpg)
ANSI 55 series insulator
We also produce fog bowl insulators for heavily polluted atmospheres and pin type insulator accroding to BS standard,commonly seen as P-33-Y, P-22-Y,P-15-Y,P-11-Y