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Changsha Power Electric Co.,Ltd. 86-731-8465-7833;
ANSI 57-31 Porcelain Line Post Insulator

ANSI 57-31 Porcelain Line Post Insulator

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    ANSI 57-31 Porcelain Line Post Insulator


    OEM Porcelain Line Post Insulator


    ANSI 57-31 Post Type Insulator

  • Color
    Gray, Brown
  • Material
    Porcelain C-120
  • Application
    Transmission And Distribution Of Electric Power
  • Standard
  • Size
    Customized Size
  • Sample
  • Oem
  • Pack
    Standard Export Packing
  • Place of Origin
  • Brand Name
  • Model Number
    ANSI 57-31
  • Minimum Order Quantity
  • Price
  • Packaging Details
  • Delivery Time
  • Payment Terms
    T/T, L/C
  • Supply Ability

ANSI 57-31 Porcelain Line Post Insulator

Transmission Line Post Porcelain Insulator ANSI 57-31/ OEM available





1. Line post insulators shall conform in all respects to the requirements of ANSI standard.

2. The insulators shall be made of good commercial-grade wet-process porcelain.The entire surface of the insulator, with the exception of a firing surface, shall be glazed.If gray is required, it shall be in accordance with ANSI Z55.1-1967 (R1973).

3. Metal parts shall be made of a good commercial grade of malleable iron, ductile iron, steel, or aluminum. Ferrous parts, other than stainless steel, shall be galvanized in accordance with ASTM A153.





ANSI CLASS Creepage distance (mm) Dry arcing distance (mm) cantilever strength (kN) Lower frequency flashover voltage Critical impulse flashover voltage Test voltage to ground (kV)
Dry(kV) Wet(kV) Positive(kV) Negative(kV)
57-31 356 165 12.5 70 50 120 155 15



Competitive advantages:


1.Make the professional power plan project idea for our client depends on the year experience. including burden capacity analysis, category selection ,technology consultation,assistance with machinery room collocation and advice for facilities installation.


2.Provide nanny-type order tracking service for customers, track and feedback every link in the production and sales process, and establish traceable files.


3 .We attach great importance to after-sales service. We will establish a database for users and follow up service regularly.


4. Provide free technical support at any time.