Insulator Performance Comparison

Release date:

2025-08-27

Insulators are critical insulation components in power systems, used to support conductors and isolate energized parts from non-energized ones. They ensure that current flows only through the wires, preventing leakage or short circuits.

Insulators are critical insulating components in power systems, used to support conductors and isolate energized parts from non-energized ones, ensuring that current flows only through the wires while preventing leakage or short circuits.

Performance metrics	Ceramic insulator	Glass insulator	Composite Insulator
Electrical Performance	Good, high-pressure resistant	Excellent, with high dielectric strength	Excellent performance with strong resistance to pollution flashovers
Mechanical strength	High (tensile and compressive)	High (comparable to porcelain)	Extremely high (high tensile strength of the mandrel)
Environmental Adaptability	High-temperature resistant, age-resistant	Acid-fog resistant, with excellent weather resistance	Resistant to dirt and moisture
Weight	Heavier	Lighter	Light
Maintenance requirements	Requires regular cleaning and inspection	Needs to be replaced after self-destruction	Maintenance-free, but hydrophobicity must be tested.
Typical application scenarios	High-voltage transmission lines, substations	High-voltage/Ultra-high-voltage lines, polluted areas	Ultra-high-voltage transmission lines, urban distribution networks