High Voltage Porcelain Post Insulator 57-1

Understanding the Working Principle of Post Porcelain Insulators

Post porcelain insulators play a critical role in electrical systems by serving dual functions—providing electrical insulation and mechanical support. These insulators prevent current from conducting between supporting structures and wires or electrical equipment. This is primarily achieved through the ceramic material's high electrical resistivity and dielectric strength.

Electrical and Mechanical Performance

Ceramic components of post insulators ensure exceptional electrical insulation. Additionally, they are designed to withstand various mechanical forces, including the weight of the wires, wind loads, and ice loads, thereby ensuring the stable operation of electrical systems.

For instance, in a 10kV overhead distribution line, porcelain insulators are installed vertically on the cross arm. They support the wires and ensure insulation between the wires and the cross arm while accommodating weight and environmental loads.

Main Types of Post Porcelain Insulators

• ANSI Class Type 57-1
  • Creepage Distance: 356mm
  • Dry Arcing Distance: 165mm
  • Cantilever Strength: 125kN
  • Dry Flashover Voltage: 80kV
  • Wet Flashover Voltage: 60kV
  • Critical Impulse Flashover Voltage Positive: 130kV
  • Critical Impulse Flashover Voltage Negative: 155kV
  • RIV Data to Ground: 15kV
  • Maximum RIV 100μV

Product Specifications

Product Name: Porcelain Insulator

Model Number: 57-1

Material: Porcelain

Application: High Voltage

Rated Voltage: 12kV/33kV

Brand Name: Huayao

Usage: Transmission lines

Place of Origin: Jiangxi, China

Standard: IEC60383

Color Options: Brown/White

Quick Detail of 57-1 Porcelain Post Type Insulator

Dimensions

• Diameter (D): 146mm
• Spacing (H): 226mm
• Creepage Distance: 356mm

Production Process

The production process of porcelain insulators at Jiangxi Huayao Electric Co., Ltd. includes:

• Mixing raw materials
• Forming blank shape
• Drying
• Glazing
• Firing in kiln
• Glue assembly
• Routine and other testing
• Packaging finished products

Customer Engagement and Visit

Jiangxi Huayao Electric Co., Ltd. welcomes customer visits to explore our facilities and witness our commitment to quality in producing overhead line transmission line ANSI 57-1 Series Porcelain Line Post Insulators.