Porcelain LV bushings 1–3 kV, 250–6500 A (DIN 42530/42539, EN 50386)
Country: · Model: DIN 42530/42539, EN 50386
Porcelain non-condenser bushings of the 1–3 kV class for rated currents from 250 to 6500 A. They bring out the LV windings of oil-filled distribution and power transformers and of traction transformers for rolling stock.
- Insulation class
- 1–3 kV
- Rated current
- 250–6500 A
- Standards
- DIN 42530, DIN 42539, EN 50386; versions for 3 kV / 4500 and 6500 A
- EN 50386 versions
- solutions “A” and “B”; 250, 630, 1000–1250, 2000–5000 A
Technical specifications
| Insulation class | 1–3 kV |
|---|---|
| Rated current | 250–6500 A |
| Standards | DIN 42530, DIN 42539, EN 50386; versions for 3 kV / 4500 and 6500 A |
| EN 50386 versions | solutions “A” and “B”; 250, 630, 1000–1250, 2000–5000 A |
| Type | non-condenser porcelain bushing for oil |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The porcelain body does not absorb moisture, and the current-carrying stud or busbar is designed for the high currents of the LV side, that is, for a voltage of 0.4–3 kV. Under DIN 42530-68 and DIN 42539-68, 1–3 kV units are made for 250–630 A and 1000–3150 A. Under EN 50386 at 1 kV there are versions “A” and “B” for 250 A, 630 A, 1000–1250 A and 2000–5000 A. For transformers with very high LV currents there are separate designs for 3 kV / 4500 A and 3 kV / 6500 A. At 1 kV under EN 50386 the current reaches 5000 A, and at 3 kV under DIN 42539 up to 3150 A. Tolerances and raw materials conform to UNEL, DIN, CENELEC and UNE, and every product undergoes electrical tests per IEC. Drawings of all parts are numbered, and contact flags are available for connecting busbars, which simplifies ordering spare parts. The bushings are installed on the LV side of 6–35/0.4 kV transformers, on traction transformers (for traction, 1–3 kV / 250–3150 A is stated), in new machines and during repairs.
How to choose
First find out the standard of the connection dimensions, DIN or EN, because bushings of different standards are not interchangeable in mounting. Then the voltage class and rated current of the LV side are selected. If the weight and fragility of porcelain are unacceptable and 1600 A or more is needed in a monoblock, see the epoxy BT and BT HC for 250–8000 A per EN 50387.
Request a price and lead time
Porcelain LV bushings 1–3 kV, 250–6500 A (DIN 42530/42539, EN 50386). We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What currents are porcelain LV bushings made for?
From 250 to 6500 A, for the 1–3 kV insulation class.
What standards cover these bushings?
DIN 42530, DIN 42539 and EN 50386, as well as versions for 3 kV / 4500 A and 6500 A of the manufacturer's own design.
What versions are there under EN 50386 at 1 kV?
Solutions “A” and “B” for 250 A, 630 A, 1000–1250 A and 2000–5000 A.
Which transformers are these bushings suitable for?
For oil-filled 6–35/0.4 kV transformers, power and traction, new and after repair.
Similar products
Isolation Transformer / AutotransformerIsolation Transformer and Autotransformer, isolation transformers and autotransformers
Autotransformer 120/240Autotransformer, 32–100 A
GI 3600 / Isotransformer 2000Isolation transformer, 2–3.6 kVA
Setavolt iSAIndustrial three-phase induction variable transformers 150–800 AREQUEST
Need a price, lead time or replacement?
Send us a request and we will confirm the configuration, lead time and delivery terms. We reply by email.