Porcelain oil-filled bushings for MV 12–52 kV (DIN 42531–42541, EN 50180/50243)
Medium-voltage porcelain bushings for 12–52 kV and currents up to 8000 A for oil-filled transformers. They are made to DIN 42531–42541, EN 50180 and EN 50243, as well as in the manufacturer's own designs.
- Rated voltage
- 12; 24; 36; 52 kV
- Rated current
- 250–8000 A
- Type
- non-condenser porcelain oil bushing
- Standards
- DIN 42531, 42532, 42533, 42534, 42541; EN 50180, EN 50243; the manufacturer's own designs
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
The manufacturer also makes porcelain oil bushings for low voltage; this page covers the MV versions. The medium-voltage porcelain bushings lead the windings of oil-filled power and distribution transformers out through the tank cover or wall. Porcelain does not absorb moisture, so the insulation properties stay stable for years. The design is non-condenser, with a current-carrying stud or rod and a set of metal parts.
The range covers insulation classes 12, 24, 36 and 52 kV at rated currents from 250 to 8000 A. To German standards the bushings are made as DIN 42531 (250 A), DIN 42532 (630 A), DIN 42533 (1000–3150 A), DIN 42534 (52 kV, 1000–3150 A) and DIN 42541 (24–36 kV, 5000–8000 A). The European versions comply with EN 50180 (12–52 kV, 250–3150 A) and EN 50243 (5000–8000 A). For the 52 kV class under DIN the available currents are 1000–3150 A, while EN 50180 also covers lower currents from 250 A.
Separately, the manufacturer offers its own designs for 36 kV / 250 A, 52 kV / 250–630 A and 1000–3150 A, 24 kV / 6300 A and 12–36 kV / 4500 A. These versions are not tied to the DIN and EN tables. The bushings are supplied with connecting flags, to which busbars and cables are attached.
The metal parts are made on machining and stamping equipment. Tolerances and raw material characteristics meet the UNEL, DIN, CENELEC and UNE standards. Every insulator undergoes electrical tests to the current IEC standards. All parts in the catalog are numbered, so spare parts are easy to order and worn elements can be replaced during repair without searching for drawings.
The bushings are fitted to oil-filled power transformers, 6–35 kV distribution transformers and railway traction transformers, both in new installations and when upgrading existing machines. The design has been proven by a large number of installed units. For low temperatures and higher safety requirements the manufacturer has an alternative in the form of dry CRS bushings made of epoxy resin with a silicone sheath.
Technical specifications
| Rated voltage | 12; 24; 36; 52 kV |
|---|---|
| Rated current | 250–8000 A |
| Type | non-condenser porcelain oil bushing |
| Standards | DIN 42531, 42532, 42533, 42534, 42541; EN 50180, EN 50243; the manufacturer's own designs |
| Supplied with | connecting flags |
| Tests | electrical tests to IEC |
Request a price and lead time
Porcelain oil-filled bushings for MV 12–52 kV (DIN 42531–42541, EN 50180/50243). We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Customs codes
| UKTZED (Ukraine) | 8546 20 00 00 |
|---|---|
| HS, 6 digits | 8546 20 |
| CN (EU) | 8546 20 00 |
| HTSUS (USA) | 8546 20 00 60 |
| China customs tariff | 8546 20 10 00 |
Codes are for reference: the final code is determined at declaration for the specific model.
Questions and answers
Which standards does the range of porcelain bushings cover?
DIN 42531, 42532, 42533, 42534 and 42541, EN 50180 and EN 50243, as well as the manufacturer's own designs.
Are there bushings for currents above 3150 A?
Yes, bushings for 5000–8000 A are made to DIN 42541 and EN 50243, and the manufacturer's own designs are rated for 4500 and 6300 A.
Which transformers are these bushings suitable for?
Oil-filled power transformers, 6–35 kV distribution transformers and traction transformers, both new ones and those being upgraded.
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