Line Post Porcelain Insulator ANSI standard 57-1 series

Line Post Porcelain Insulator ANSI standard 57-1 series

BONLE produce Tie–Top Line Post Insulators, Horizontal & Vertical Clamp Top Line Post. Usually, the horizontal & vertical clamp top line post assemblies for ratings 25 kV through 35 kV. All Line Post Insulators are manufactured in strict compliance with ANSI standards, these insulators offer excellent mechanical strength as well as electrical characteristics.

About porcelain / ceramic line post insulator: 


Porcelain line post insulator or ceramic line post insulator is used on distribution lines and transmission lines up to 132KV. It is mounted rigidly on supporting structure by means of a stud or bolts. Some porcelain line post insulators are used the same ways as distribution ceramic pin insulator, but ceramic line post insulator is non-puncturable design.


Porcelain line post insulator: 


According to the types of connecting with conductors, ceramic line post insulator can be classified into:


Tie top line post insulator: ANSI 57-1, ANSI 57-2, ANSI 57-3, ANSI 57-4, ANSI 57-5  

Clamp top line post insulator, vertical clamp mounting direction: ANSI 57-11, ANSI 57-12, ANSI 57-13, ANSI 57-14, ANSI 57-15 

Clamp top line post insulator, horizontal clamp mounting direction: ANSI 57-21, ANSI 57-22, ANSI 57-23, ANSI 57-24, ANSI 57-25 

Clamp top line post insulator, inclined horizontal clamp mounting direction: ANSI 57-31, ANSI 57-32, ANSI 57-33, ANSI 57-34, ANSI 57-35 


The cantilever strength of porcelain line post insulator can be 5KN, 10KN, 12.5KN, 16KN.  


Hardware or end fittings for ceramic line post insulator:  

Caps: African countries use two types of insulator, capped and uncapped porcelain line post insulator.

Stud or bolt: short stud and long stud with nut and washers for porcelain line post insulator. 


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