DT 3kV 250A DT 3kV 630A Transformer Medium Voltage Porcelain Bushing
- Details
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
| Pos. No. | Description | Material | 250A Pcs. | 630A Pcs. |
| 1 | Porcelain A | C110 | 1 | 1 |
| 2 | Porcelain B | C110 | 1 | 1 |
| 3 | Bolt with nut Y | CuZn40Pb2 | 1 | |
| Bolt with nut Y | Cu-ETP | 1 | ||
| 4 | Washer G | CuZn40Pb2 | 1 | 1 |
| 5 | Washer E | CuZn40Pb2 | 1 | 1 |
| 6 | Hexagon Nut | CuZn40Pb2 | 3 | 3 |
| 7 | Washer | CuZn40Pb2 | 2 | 2 |
| 8 | Spring Lock Washer | A2 | 1 | 1 |
| 9 | Ring Gasket J | NBR | 1 | 1 |
| 10 | Flat Gasket M | NBR | 1 | 1 |
| 11 | Flat Gasket N | NBR | 1 | 1 |
| 12 | Flat Gasket 0,X | Presspan | 1 | 1 |
| 13 | Flat Gasket P,R | Presspan | 1 | 1 |
| Type | a max mm | b max mm | C mm | d1 | d2 mm | d3 mm | d4 mm | d5 mm | weight kg |
| DT 3/250 | 180 | 94 | 25 | M12 | 28 | 39 | 70 | 75 | 1 |
| DT 3/630 | 210 | 110 | 37 | M20 | 46 | 45 | 85 | 90 | 2,4 |
