Pin insulators mainly used on distribution lines with the voltage from 6kv to 36kv. It used on high voltage wires, so it calls HV pin insulator, too

The standard of HV pin insulator:
ANSI C29.5
ANSI C29.6
IEC

According to different standards, the types of HV pin insulator:
ANSI C29.5 series: ANSI 55-1, 55-2, 55-3, 55-4, 55-5
IEC standard: P-11-Y, P-15-Y, P-22-Y, P-33-Y, PW-15-Y, PW-22-Y, PW-33-Y
ANSI C29.6 series: ANSI 56-1, 56-2, 56-3, 56-4, 56-5

The cantilever strength of HV pin insulator: 13KN and 11KN.
The creepage distance of ANSI C29.5 series: 102mm, 127mm, 178mm, 229mm, 305mm
The creepage distance of ANSI C29.6 series: 330mm, 432mm, 533mm, 686mm, 865mm
The creepage distance of IEC standard pin insulator: 255mm, 298mm, 432mm, 630mm, 673mm, 900mm

The HV pin insulator is an important insulator for distribution line, different insulator has different parameters, if you want to know details, you can see the pin insulator pdf.

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