U120B toughened glass suspension insulators are widely used for high voltage transmission (≥ 500 kV) around the world. They have very high resistivity and one of the most advantages is that the faulty or sparked insulator can be easily detected and spotted due to the transparent design.
The photo and drawing of U120B Glass Electrical Power Line Insulators
Technical Specifications of U120B glass Electrical Insulators
Creepage Distance | 320mm |
Power Frequency Withstand Voltage,Dry | 80kV |
Power Frequency Withstand Voltage,Wet | 50kV |
Lightning Impulse Withstand Voltage | 100kV |
Power Frequency Puncture Voltage | 130kV |
Mechanical Failing Load | 120kN |
Tensile Load Test | 60kN |
Standard Coupling | 16 |