Transformer Bushings

Transformer Bushings include EN and DIN Transformer Bushing, British Transformer Bushing, Australian Transformer Bushing, and Special Transformer Bushing. The following is the detailed information.

Transformer Bushings   Transformer Bushing

Outdoor transformer bushings are manufactured in accordance with IEC60137 and product standards such as EN50386 & EN50180 (evolutions of the old DIN standards 42531, 42532 etc which are no longer current but typically may still be specified). The range of standard transformer bushings that can be supplied are up to 52kV and 12 500A, these bushings are manufactured using a standard porcelain insulator as the major insulation.

EN and DIN Transformer Bushing:
As a standard product we can offer both historical DIN standard bushings and the latest EN range of bushings, these product cover the requirements of distribution and power transformer manufacturers. We can offer ratings from 1.1kV through to 52kV and up to 12 500A with a wide variety of creepage distances to meet all environmental conditions.

All outdoor bushings are manufactured and tested in accordance with IEC60137, the detail of the bushing is governed by either historical DIN specification (no longer live standards but still utilsed widely by the transformer and distribution industry) or the latest range of EN specifications (EN50386 & EN50180).

British Transformer Bushing:
To complement our standard range of bushings we have extensive knowledge on country specific requirements, the BS range of bushings are manufactured to meet specific requirments in the UK and are typically approved by the NGC or DNO's. The bushings range from 1.1kV through to 52kV and up to 9 100A.
All outdoor bushings are manufactured and tested in accordance with IEC60137, the detail of the bushing is governed by historical standard such as EATS 35-1 or BEBS T2. One important factor regarding this historical range of bushings is we can offer replacement or refurbishment for existing units.

Australian Transformer Bushing:
To complement our standard range of bushings we have extensive knowledge on country specific requirements, the Australian range of bushings are manufactured to meet specific requirements in Australia and have been developed in conjunction with local transformer manufacturers and are typically approved by the NGC or DNO's. The bushings range up to 52kV and up to 3 150A.
All outdoor bushings are manufactured and tested in accordance with IEC60137, the detail of the bushing is governed by AS standards. One important factor regarding this historical range of bushings is we can offer replacement or refurbishment for existing units.

Special Transformer Bushing:
If your requirement is for a specialist bushing then we are the company to help you engineer your solution, your requirement may simply be to replace an existing bushing or develop a bushing that meets your exact requirements. Typically we take an existing design and modify certain parameters to meet your needs, this can take the form of simply modifying the bushing end terminations to suit your assembly methods or completely redesigning the bushing to meet your exact requirements.
Our engineers are happy to sit down with the customer and explore design possibilities that can offer bespoke solutions at cost effective prices.

Air end termination is typically either the screwed conductor stem or flag terminal (various hole arrangements are available) and the oil end termination can be as the air end termination or a machined hole arrangement to suit the customers requirements.


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Orient Group is a professional manufacturer and exporter of composite suspension insulator and porcelain disc suspension insulator.