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Home > Porcelain Insulator > Wholesale ANSI 57-4 High Voltage Tie Top Porcelain Line Post Insulator Manufacturers, Supplier
Wholesale ANSI 57-4 High Voltage Tie Top Porcelain Line Post Insulator Manufacturers, Supplier
Wholesale ANSI 57-4 High Voltage Tie Top Porcelain Line Post Insulator Manufacturers, Supplier
Wholesale ANSI 57-4 High Voltage Tie Top Porcelain Line Post Insulator Manufacturers, Supplier
Wholesale ANSI 57-4 High Voltage Tie Top Porcelain Line Post Insulator Manufacturers, Supplier
Wholesale ANSI 57-4 High Voltage Tie Top Porcelain Line Post Insulator Manufacturers, Supplier
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Wholesale ANSI 57-4 High Voltage Tie Top Porcelain Line Post Insulator Manufacturers, Supplier
Wholesale ANSI 57-4 High Voltage Tie Top Porcelain Line Post Insulator Manufacturers, Supplier
Wholesale ANSI 57-4 High Voltage Tie Top Porcelain Line Post Insulator Manufacturers, Supplier
Wholesale ANSI 57-4 High Voltage Tie Top Porcelain Line Post Insulator Manufacturers, Supplier
Wholesale ANSI 57-4 High Voltage Tie Top Porcelain Line Post Insulator Manufacturers, Supplier

Wholesale ANSI 57-4 High Voltage Tie Top Porcelain Line Post Insulator Manufacturers, Supplier

ANSI 57-4 High Voltage Tie Top Porcelain Line Post Insulator It is a ceramic high-voltage line post insulator that complies with American national standards and uses top tied wire fixation. Its main function is to serve as both a mechanical support for wires and an insulator to isolate current in high voltage environments.
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Product Description

Product Demonstration

Technical Drawing

ANSI 57-4L Technical Drawing

Product Parameters

Line post type porcelain insulators
ANSI Class Unit 57-1 57-2 57-3 57-4 57-5
Dimensions
Creepage distancemm35655973710151145
Dry arcing distancemm165241311368438
Mechanical Values
Cantilever strengthkn12.512.512.512.512.5
Cantilever strength routine testkn55555
Electrical Values
Type application voltagekv2535455566
Low frequency dry flashover voltagekv80110125150175
Low frequency wet flashover voltagekv6085100125150
Critical impulse flashover voltage, positivekv130180210255290
Critical impulse flashover voltage, negativekv155205260340380
Radio Influence Voltage Data
Test voltage RMS to groundkv1522304444
Maximum RIV at 1000kHzµv100100200200200
Packing and Shipping Data
Net weight, approximatekg5.29.011.016.018.0

Detailed Photos

The ANSI 57-3 High Voltage Tie Top Porcelain Line Post Insulator is a classic, standardized insulator used in high-voltage transmission and distribution lines.
ANSI 57-4 POST INSULATOR

ANSI 57-4 POST INSULATOR

LONG STEEL PIN

LONG STEEL PIN

ANSI 57-4 WITH SPINDLE

ANSI 57-4 POST INSULATOR WITH SPINDLE

Frequently Asked Questions

What is the application voltage for the ANSI 57-4 insulator?
The ANSI 57-4 line post porcelain insulator is designed for a type application voltage of 55kV.
What is the cantilever strength of the ANSI 57 series?
All models in the ANSI 57 series (57-1 to 57-5) feature a cantilever strength of 12.5 kN, with a routine test value of 5 kN.
How does the creepage distance differ between 57-3 and 57-4 models?
The ANSI 57-3 model has a creepage distance of 737mm, while the ANSI 57-4 model provides a longer creepage distance of 1015mm.
What is the weight of an ANSI 57-4 insulator?
The approximate net weight of the ANSI 57-4 model is 16.0 kg.
What are the Radio Influence Voltage (RIV) characteristics?
For the ANSI 57-4, the test voltage RMS to ground is 44kV, with a maximum RIV of 200 µv at 1000kHz.
Can the ANSI 57-4 be supplied with mounting hardware?
Yes, the ANSI 57-4 line post insulator can be equipped with a long steel pin or a spindle for secure mounting on power lines.

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