GUY WIRE INSULATOR INSTALL
GUY WIRE INSULATOR SERIES

Silicone rubber insulator is easy to install, excellent pollution performance, excellent mechanical properties, resistant to weathering, resistant to vandalism, resistance to damage and so on. Porcelain is heavy than other materials and hard to transport and install, but it is cheap and has a long-life performance. Interchangeability- can easily replace existing porcelain insulatorsĮach material has its advantages and disadvantages, so the insulator material selection depends on its characters and the requirement of customers.

GUY WIRE INSULATOR INSTALL

Small volume and lightweight, easy to install and transportīetter performance in high contamination areasĬonsistent mechanical and electrical performance throughout the entire service life (c) Composite insulatorĬomposite polymer insulators have two insulating parts such as fiberglass core and a metal equipped with metal end fittings. High compressive strength than porcelain insulators.Īs it is transparent, so any flow impurities air bubbles cracks, impurities, etc. High dielectric strength about 140KV per c.m of the thickness of the material. Glass insulator has the following advantage:. Many times glass is used as insulating material.

Suitable for extremely hot/cold changes in the environment (b) glass insulator Resistant to rodents, termites, birds and other animals capable of compromising the integrity Higher resistance to degradation of the surface In the dry state as electric insulation material has better electrical properties than the polymer Giving a longer useful life in terms of loads generated by electric charges At its disposal, the porcelain insulator is not dangerous waste It is mechanically stronger than glass, gives less trouble from leakage, and is less affected by temperature change.Įnvironmental friendly. The metal parts within the insulator are made of malleable cast iron with galvanizing. It is produced by firing at a high temperature a mixture of kaolin, feldspar, and quartz. The most commonly used materials for the overhead line is porcelain. high ratio of puncture strength to flashoverĬhapter 2：Insulator material (a) Porcelain insulator.high relative permittivity of insulating material so that the dielectric strength is high.high electrical resistance in order to minimize the leakage currents.high mechanical strength to withstand the conductor load, wind load, etc.Insulators should have the following properties: Overhead power lines are always supported on insulators mounted on their support poles and towers. Permittivity and dielectric strength of the insulating material are very high so that it can withstand high electrical stress. Insulators are used to separate line conductors from each other and the supporting structures electrically. Chapter 7: Frequently Asked Questions (FAQs)Ĭhapter 1：What is an electrical insulator?.Chapter 5: The important manufacturing Process in Rax Industry.Chapter 1 : what is an electrical insulator?.B type for the same 240/415V with min.A type for 240/415V with minimum failing load of 44 kN.Guy Insulators can also be effectively used for dead end on medium voltage lines.

GUY WIRE INSULATOR SERIES

Two C type guy strain Insulators are normally used in series for 33 kV lines. A type for 240/415V with minimum failing load of 44 kN Three types of guy strain insulators are generally used for rural lines in India. in such cases, he bottom portion of the guy wire or stay wire would have no voltage due to insulation of guy strain insulator which normally installed in the middle of the guy or stay wire. Guy or stay or egg insulators give protection in the event of a broken live conductor accidentally energising a guy wire or stay wire and remaining in contact with the live line which does nor trip. Maximum strength is obtained from porcelain of guy insulators by the interlocking of guy cables as the load places the porcelain between the holes in compression Further, the porcelain grooves of these insulators are suitably designed to minimise strans stress. Its rugged design provides relative freedom from breakage due to impact or rough handling. Rama guy insulators provide high quality insulation for medium and low voltage circuits.

Guy wire insulator