DT 3kV 250A DT 3kV 630A Transformer Medium Voltage Porcelain Bushing

The Threaded Bushings for voltage of 3kV are supplied assembled with the respective porcelain, NBR gaskets, copper threaded rod, blued steel spin grip nut, zinc-plated brass connector and stainless steel lock washer and nut.

High-voltage bushings are either oil-filled or condenser bushings. Oil-filled bushings have a central conducting rod or tube through which the conductor passes. Around this, a series of insulating barriers are held apart by spacers. The barriers and spacers are enclosed in a skirted porcelain shell that is filled with oil. Condenser bushings are similar except that the central rod is wound with alternating layers of insulation and foil. This results in a path from the conductor to the case consisting of a series of condensers. The layers are designed to provide an approximately equal voltage drop between each condenser. In some condenser bushings, the whole bushing is enclosed in a skirted porcelain shell. Other types have only the exposed part of the bushing enclosed in the porcelain shell.

1.Material:  porcelain insulator

2.Glaze color: Brown

3.Rated voltage: 3KV

4.Rated current: 250/630A

5.Standard: DIN

Our Advantage

* Good strength

* Good insulating properties

* Lightning-withstand

* Anti-corrosion

* Rustproof

* Mature brass processing

* Using bright tin makes it not easy to be scratched