Since , the total sales volume of Thunder Lightning brand tempered glass insulator has exceeded 100 million pieces, accounting for half of the country and one sixth of the world.
The Glass Insulator is composed of an iron cap, toughened glass parts and steel pin, which are combined with cement adhesive. Before assembling, the top of the steel pin is provided with a soft gasket, the inner cavity of the iron cap and the pin ends at the contact point with the cement adhesive are covered by tar. The gasket and tar are used to buff in case of damage when insulator facing thermal expansion and contraction. Toughened glass parts are used to insulate.
Glass Insulators have the characteristics of small size, light weight, zero-value self-breaking, and easy detection; high mechanical strength; good arc resistance; good self-cleaning performance and not easy to age. In addition, the spraying material has the advantages of strong hydrophobicity, long-term resistance to pollution, low leakage current on the surface, and maintenance-free during operation; it is widely used in various circuits at home and abroad.
Disk suspension glass insulators are divided into Standard Type, Anti-pollution Type, DC type, Aerodynamic Type, Out-ribs Type and Ground Wire Type.
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Available for any voltage and contamination level by changing number of insulators
High reliability is achieved by long-term experience and accumulation of technology.
High strength porcelain insulators require not only higher amount of alumina but also
In addition to ISO certified,
Hydraulic Pressure Test
If you are looking for more details, kindly visit Aerodynamic Glass Insulator.
Thermal-Mechanical (T&M) performance test as per IEC -1 or ANSI C29.2 is to evaluate long-term reliability of insulators.
As these standards specify minimum requirements only, all NGK insulators have been confirmed to pass modified T&M test.
To exclude poor quality insulators, M&E test results before and after T&M test are:
(R: mean value, s: standard deviation)
Contaminated and wet insulators display a biased leakage current having DC component. This DC component causes electrolytic corrosion and reduction of pin diameter.
NGK developed Zinc Sleeve to prevent pin corrosion.
NGK suspension (disc) insulators meet the requirements and tests of the following standards.
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