Adams53Frederiksen

high voltage testing of insulators ppt -image' style='float:left;margin-right:10px;' src="https://i.ebayimg.com/thumbs/images/g/QjIAAOSwMOVcVQRQ/s-l225.jpg" width="252px" alt="high voltage glass suspension insulators"/>The series products are composed of glass fiber epoxide resin core rod, silastic shed and metal fittings, The silastic shed adopt the entire packing stress approach, and then to solve the essential dilemma, interface electric spark puncture, which would have an effect on the reliability of composite insulator, connection of the glass fiber rod and metal fittings, adopts the stress welding method of the international advanced level, and have the full automatic sound wave detection of defects system, higher intension, stunning outline, small volume, light weight, and the metal fitting of galvanization can corrosion prevention an exchange utilized with porcelain insulator, this product is dependable structure, can not damage the core rod, and take complete advantage of the machanical strength. They have created more than 260 million insulators successfully employed on electric transmission lines from ,4 kV to 1150 kV in far more than 45 nations about the planet. The utility started to use polymer insulators in the early 1980s and has effectively utilized them at all voltages.
In terms of the construction, suspension insulator comprises porcelain discs which are effectively arranged in series to kind a string-like structure. Although even the earliest mass-made insulators had been constructed with the still familiar wire grooves by way of which the line wires run, insulators were at initial made with non-threaded pinholes.
Great electric specification, powerful mechanical strength, tensile of the epoxy glass fiber rod, Fine anti-pollution, robust avoid flash accident, and the wet withstand voltage and pollution withstand voltage is 2-2.five instances than the same creepage distance porcelain insulator, and not to cleanup, can secure operate in the significant pollution regions, little volume, light weight, lightness structure, shed has favorable waterproof overall performance, Excellent sealing performance, strength anti-ageing, corrosion proof, low-temperature proof performance and the level is TM4.5 class, is applied to -40-+50 locations, robust resistance to influence and creep resistance, unbearable anti-bend, high anti-bend strength, loading internal, force and robust explosion proof, can exchange use of porceelain, glass insulator each other.
Another cause for the test object with 1 huge and one tiny (brief) sheds possessing the highest 50% flashover voltage along the unit insulation height is that it has the minimum average diameter. Most higher voltage insulators are made with a reduced flashover voltage than puncture voltage, so they flash more than before they puncture, to steer clear of harm.
This has resulted in the installation of toughened glass insulators on a portion of the utility's recent 500-kV line construction. These electrical insulating material requirements let makers, specifically those in the semiconductor sector, to examine and asses such materials and gear to make certain their qualification for safe use.