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Home > Porcelain Insulator > Wholesale ANSI 57-3 High Voltage Tie Top Porcelain Line Post Insulator Factory, Factories
Wholesale ANSI 57-3 High Voltage Tie Top Porcelain Line Post Insulator Factory, Factories
Wholesale ANSI 57-3 High Voltage Tie Top Porcelain Line Post Insulator Factory, Factories
Wholesale ANSI 57-3 High Voltage Tie Top Porcelain Line Post Insulator Factory, Factories
Wholesale ANSI 57-3 High Voltage Tie Top Porcelain Line Post Insulator Factory, Factories
Wholesale ANSI 57-3 High Voltage Tie Top Porcelain Line Post Insulator Factory, Factories
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Wholesale ANSI 57-3 High Voltage Tie Top Porcelain Line Post Insulator Factory, Factories
Wholesale ANSI 57-3 High Voltage Tie Top Porcelain Line Post Insulator Factory, Factories
Wholesale ANSI 57-3 High Voltage Tie Top Porcelain Line Post Insulator Factory, Factories
Wholesale ANSI 57-3 High Voltage Tie Top Porcelain Line Post Insulator Factory, Factories
Wholesale ANSI 57-3 High Voltage Tie Top Porcelain Line Post Insulator Factory, Factories

Wholesale ANSI 57-3 High Voltage Tie Top Porcelain Line Post Insulator Factory, Factories

ANSI 57-3 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.
Despite the emergence of new products such as composite polymer insulators, this classic porcelain pillar insulator is still widely used in power grids around the world due to its excellent reliability and durability.
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Product Description

🎬 Video Overview
📐 Product Drawing
ANSI 57 series insulator technical drawing
📊 Technical Parameters
Line Post Type Porcelain Insulators
ANSI Class Unit 57-1 57-2 57-3 57-4 57-5
Dimensions
Creepage distance mm 356 559 737 1015 1145
Dry arcing distance mm 165 241 311 368 438
Mechanical Values
Cantilever strength kn 12.5 12.5 12.5 12.5 12.5
Cantilever strength routine test kn 5 5 5 5 5
Electrical Values
Type application voltage kv 25 35 45 55 66
Low frequency dry flashover voltage kv 80 110 125 150 175
Low frequency wet flashover voltage kv 60 85 100 125 150
Critical impulse flashover voltage, positive kv 130 180 210 255 290
Critical impulse flashover voltage, negative kv 155 205 260 340 380
Radio Influence Voltage Data
Test voltage RMS to ground kv 15 22 30 44 44
Maximum RIV at 1000kHz μv 100 100 200 200 200
Packing and Shipping Data
Net weight, approximate kg 5.2 9.0 11.0 16.0 18.0
📸 Detailed Photos
ANSI 57-3 High Voltage Tie Top Porcelain Line Post Insulator

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.

❓ Frequently Asked Questions
What is the application of the ANSI 57-3 insulator?
The ANSI 57-3 is a high-voltage tie top porcelain line post insulator specifically designed for use in power transmission and distribution lines to provide insulation and structural support.
What is the cantilever strength of the 57 series?
The entire ANSI 57-1 to 57-5 series features a standard cantilever strength of 12.5 kN, with a routine test strength of 5 kN.
How does the creepage distance vary between models?
The creepage distance ranges from 356 mm for the 57-1 model up to 1145 mm for the 57-5 model, allowing for different environmental and voltage requirements.
What are the electrical flashover values for ANSI 57-3?
The ANSI 57-3 model has a low frequency dry flashover voltage of 125 kV and a wet flashover voltage of 100 kV.
What is the weight of these insulators for shipping?
The approximate net weight varies by model: 57-1 (5.2 kg), 57-2 (9.0 kg), 57-3 (11.0 kg), 57-4 (16.0 kg), and 57-5 (18.0 kg).
Is the tie top design standardized?
Yes, these are classic, standardized insulators according to ANSI specifications, ensuring compatibility with standard high-voltage utility hardware.

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