120kN High Voltage Porcelain Insulator U120B

Porcelain Insulator Classification and Application

Porcelain insulators are vital components in power systems, providing excellent insulation protection. They are classified into various types based on shape and application, including cap, disc, and string insulators.

Cap Insulator

The insulation part of a cap insulator is circular or cap-shaped. It is commonly used for equipment connections in power systems, offering reliable insulation protection.

Disc Insulator

Featuring a disc-shaped insulating part, disc insulators are widely utilized in high-voltage equipment. Their structure helps in increasing the creepage distance, thereby enhancing insulation performance.

String Insulator

String insulators comprise multiple insulator units connected in series, improving electrical insulation strength to meet high-voltage line requirements.

Main Technical Parameters of Standard Disk Suspension Type Porcelain Insulator

• IEC Type: U120B
• Diameter D (mm): 255
• Spacing H (mm): 146
• Creepage Distance L (mm): 320
• Size of Coupling (mm): 16
• Mechanical Failing Load (kN): 120
• Mechanical Routine Test (kN): 60
• Power Frequency Withstand Voltage DRY (kV): 70
• Power Frequency Withstand Voltage WET (kV): 40
• Lighting Impulse Withstand Voltage (kV): 100
• Min Power Frequency Puncture Voltage (kV): 110

Product Details

The U120B Porcelain Insulator is a standard disc suspension insulator crafted for high-voltage applications.

Specifications

• Material: Porcelain
• Rated Voltage: 33kV
• Color: Brown/White
• Mechanical Load: 120kN

Origin and Standards

Manufactured by Jiangxi Huayao Electric Co., Ltd in China, the U120B model adheres to IEC60383 standards and is certified by ISO9001.

Production Capacity and Distribution

The company boasts a daily production output of 10,000 pieces, with a minimum order quantity of 10 pieces. Products can be shipped from Ningbo or Shanghai ports, with a supply ability of up to 50,000 pieces.

Testing and Quality Assurance

The porcelain insulators undergo rigorous testing by third-party organizations such as XIHARI and meet national ceramic product quality standards. Pre-shipment inspections by INTERTEK, SGS, BV, or the customer ensure product quality.