High Voltage Porcelain Insulator for Electrical Posts 57-5
Performance Advantages of Post Porcelain Insulator
Post porcelain insulators offer superior performance due to their robust mechanical and electrical properties. These insulators are designed to withstand harsh weather conditions and ensure the stability of electrical components in high-voltage transmission settings.
Mechanical Performance
- Capable of withstanding large axial and lateral loads.
- Guaranteed stability under severe weather conditions including strong winds, ice, and snow.
- Prevents displacement or damage to electrical components due to mechanical stress.
Electrical Insulation Performance
- High insulation resistance and breakdown voltage.
- Prevents leakage and flashover phenomena, crucial in high-voltage systems.
Weather Resistance
- Ceramic materials provide excellent weather resistance.
- Stable operation under diverse climatic conditions such as high and low temperatures, and humidity.
Main Types of Post Porcelain Insulator
Below are the typical ANSI class types:
| Type No. | Creepage Distance (mm) | Dry Arcing Distance (mm) | Cantilever Strength (kN) | Dry Flashover Voltage (kV) | Wet Flashover Voltage (kV) | Positive Impulse Flashover (kV) | Negative Impulse Flashover (kV) | RIV Data to Ground (kV) | MAX RIV (kV) |
|---|---|---|---|---|---|---|---|---|---|
| 57-1 S/L | 356 | 165 | 125 | 80 | 60 | 130 | 155 | 15 | 100 |
| 57-2 S/L | 559 | 241 | 125 | 110 | 85 | 180 | 205 | 22 | 100 |
| 57-3 S/L | 737 | 311 | 125 | 125 | 100 | 210 | 260 | 30 | 200 |
| 57-4 S/L | 1015 | 368 | 125 | 150 | 125 | 255 | 340 | 44 | 200 |
| 57-5 S/L | 1145 | 438 | 125 | 175 | 150 | 290 | 380 | 44 | 200 |
57-5 Porcelain Post Type Insulator Specifications
The 57-5 porcelain post insulator from Jiangxi Huayao Electric Co., Ltd. is ideal for high-voltage applications:
- Rated Voltage: 12kV/33kV
- Material: Porcelain
- Application: Transmission lines
- Color: Brown/White
Dimensions
- Diameter (D): 184mm
- Spacing (H): 476mm
- Creepage Distance: 1145mm
Mechanical and Electrical Values
- Cantilever Strength: 125kN
- Dry Flashover Voltage: 175kV
- Wet Flashover Voltage: 150kV
- Positive Impulse Flashover: 190kV
- Negative Impulse Flashover: 380kV
- Maximum RIV at 1000 kHz: 200μV
Production Process and Capacity
The manufacturing process at Jiangxi Huayao Electric Co., Ltd. follows strict standards:
- Mix raw materials
- Shape blanks
- Drying & Glazing
- Kiln firing
- Glue assembly and testing
- Packaging of finished products
Production and Shipping Capabilities
- Daily Output: 10,000 pieces
- Minimum Order Quantity: 10 pieces
- Supply Ability: 50,000 pieces per month
- Delivery Ports: Ningbo, Shanghai
- Payment Terms: TT, L/C, FCA
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