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Changsha Power Electric Co.,Ltd. 86-731-8465-7833;
ANSI 57-4 Porcelain Line Post Insulator

ANSI 57-4 Porcelain Line Post Insulator

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    ANSI 57-4 Porcelain Line Post Insulator


    44kV Porcelain Line Post Insulator


    ANSI 57-4 Line Post Insulators

  • Color
    Light Gray
  • Material
    Porcelain C-120
  • Application
    Transmission And Distribution Of Electric Power
  • Size
    Customized Size
  • Sample
  • Oem
  • Pack
    Standard Export Packing
  • Place of Origin
  • Brand Name
  • Model Number
    ANSI 57-4
  • Minimum Order Quantity
  • Price
  • Packaging Details
  • Delivery Time
  • Payment Terms
    T/T, L/C
  • Supply Ability

ANSI 57-4 Porcelain Line Post Insulator


ANSI Line Post Porcelain Insulator/ Light gray with semi-conductive glaze





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)
57-4 1015 368 12.5 140 110 230 44


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.





1. Glaze color: Light gray
2. Creepage distance: 1015mm

3. Cantilever strength: 12.5kN
4. Power frequency fiashover voltage -Dry: 140KV
5. Power frequency fiashover voltage -wet: 110KV
6. Standard: ANSI



Competitive advantages:


1) Our insulators ensure good profit margin and flexibility along with excellent apprearance and quality.  

2) OEM or ODM orders are accepted;

3) 100% new, 100% test before delivery;

4) Professional export team and quick service;

5) Good after-sale service, speed responding in 24 hours.