Description
EN 1kV 250A 630A Low Voltage Transformer Porcelain Insulator Bushing
The Threaded Bushings for voltage of 1.1kV 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.
Low-voltage transformers with separate leads normally have solid porcelain bushings. These bushings consist of high-grade porcelain cylinders through which the connections pass. The outside surface may be plain or have a series of corrugations or skirts to increase the surface leakage path to the metal case. When the conductors are brought to the transformers in lead-covered cables, the leads often enter through cable terminators. These terminators are similar to ordinary potheads and are attached to the transformer with the bushings inside the case.
EN 1kV 250A 630A Bushing Information
1.Material: porcelain insulator
2.Glaze color: Brown
3.Rated voltage: 1KV
4.Rated current: 250/630A
5.Standard: EN
EN 1kV 250A 630A Bushing Advantage
* Good strength
* Good insulating properties
* Lightning-withstand
* Anti-corrosion
* Rustproof
* Mature brass processing
* Using bright tin makes it not easy to be scratched
EN 1kV 250A 630A Bushing Parameter
| Pos. No. |
Description | Material | AP Pcs. |
ST Pcs. |
| 1 | Porcelain A | C110 | 1 | 1 |
| 2 | Porcelain B | PA | 1 | 1 |
| 3 | Connecting Bolt ST | CuZn40Pb2 | —— | 1 |
| 4 | AP – Bolt | CuZn40Pb2 | 1 | —— |
| 5 | AP – Washer | CuZn40Pb2 | 1 | —— |
| 6 | Cap | CuZn40Pb2 | 1 | 1 |
| 7 | Hexagon Nut | CuZn40Pb2 | 3 | 3 |
| 8 | Washer | CuZn40Pb2 | 2 | 2 |
| 9 | Spring Lock Washer | A2 | 1 | 1 |
| 10 | Ring Gasket J | NBR | 1 | 1 |
| 11 | Flat Gasket N | NBR | 1 | 1 |
| Type | a max mm |
b max mm |
C mm |
d mm |
e mm |
d1 | d2 mm |
d3 mm |
d4 mm |
Weight kg |
| DT 1/250 | 125 | 63 | 30 | 16 | 25 | M12 | 52 | 28 | 60 | 0,77 |
| DT 1/250 | 125 | 58 | 25 | —— | —— | M12 | 52 | 28 | 60 | 0,78 |
| DT 1/630 | 165 | 68 | 25 | 35 | 35 | M20 | 70 | 45 | 84 | 1,79 |
| DT 1/630 | 165 | 70 | 37 | —— | M20 | 70 | 45 | 84 | 1,8 |
