It is butt jointed by two pieces of aluminum alloy frames and composite sheds with the same structure and shape. It becomes an umbrella shaped shield which prevents the bird droppings to pollute the composite insulators. This type can make the electrical field distribute uniformly further more, give a good screen to the end fittings and etc......
It consists of two pieces of semicircular rinds with the same structure and shape. The combined grading ring shapes like a straw hat. This innovative design gives much advantages such as better grading and shielding effects, raising incept corona voltage, providing better protection to the insulators when lightning strikes, and etc......
Butt jointed lower grading rings
It is butt jointed by two pieces of thin semicircular rinds with same shape and dimension, and looks like the shape of the steering wheel. It is designed with biggish curvature radius, shield depth, and radius 40-50mm groove, and etc. all of these can assure nicer grading effect, remarkable shield and etc......
(These grading rings are invented by ourselves and have been applied the patent.)
Catalogue:Metal fittings
Metal fittings
