DIN 42531 10NF250A Transformer Bushing
High Voltage Transformer Bushings
Product Overview
A DIN 42531 bushing in the 10NF250A pattern, connecting transformers and generators to high voltage transmission lines. It sits in a range that covers 1 kV to 52 kV and up to 5000 A with a choice of creepage distances for different environmental conditions. All outdoor bushings are manufactured and tested to IEC 60137, with the detail governed by either the historical DIN specification or the current EN 50386 and EN 50180 range.
- DIN 42531
- EN 50180
- EN 50386
- IEC 60137
Key benefits
Why Buyers Choose This Part
- Tested to IEC 60137 so test evidence is available for the specification file
- Historical DIN and current EN patterns both kept in production
- Creepage distances selectable to suit the environmental conditions
- Screwed conductor air end termination as the standard arrangement
Application scenarios
Where It Is Used
- 10 kV class transformer terminal boards drawn to DIN 42531
- Generator connections into high voltage transmission networks
- Specifications that reference a discontinued DIN standard
- Distribution transformer manufacture needing a range of ratings
Who it is for
Who It Suits
- Distribution and power transformer manufacturers
- Generator package builders
- Utilities and distributors buying against DIN references
Problems it solves
What Goes Wrong Without The Right Part
- Drawings referencing DIN standards no longer maintained
- Missing IEC 60137 test evidence at specification review
- Creepage class chosen without reference to the site environment
- Suppliers who carry only the EN range and not the DIN patterns
Technical features
How It Is Built
- DIN 42531 10NF250A pattern
- Range covers 1 kV to 52 kV and up to 5000 A
- Manufactured and tested by IEC 60137
- Detail governed by historical DIN or current EN 50386 and EN 50180
- Screwed conductor air end termination
- Various creepage distances for all environmental conditions
Specifications
Published Figures For This Product
Every value below comes from the manufacturer data for this item. Figures not listed are confirmed against the drawing before an order is placed.
| DIN 42531 10NF Pattern | 250 A |
|---|
Materials
Materials
- Electrical porcelain shell
- Electrolytic copper or aluminium alloy conductor
Manufacturing
Process
- Shell forming
- Glazing
- Firing
- Conductor assembly
- Testing to IEC 60137
Quality control
Testing
- Routine testing in accordance with IEC 60137
- Creepage verification against the specified class
- Termination thread and contact inspection
Certifications
Certification
- Manufactured and tested by IEC 60137
- Built to DIN 42531, EN 50180 and EN 50386
- ISO 9001 quality management system
Customisation
Customisation Options
- Ratings from 1 kV to 52 kV and up to 5000 A
- Creepage distance chosen for the site environment
- Air end termination to your connection type
Comparison
How It Compares
| DIN 42531 20NF-250A | Same standard and the same 250 A current rating at a higher voltage class. The NF number sets the voltage, so match it to the transformer. |
|---|---|
| EN 50180 bushings | EN is the current specification set, DIN the historical one. Both remain in production because transformer drawings still reference both. |
Use guide
Before You Order And After It Arrives
- Confirm whether your drawing quotes DIN 42531 or the EN equivalent
- State the site environmental conditions so the creepage class is right
- Ask for IEC 60137 test documentation if the specification requires it
- Check the air end termination type matches your connection
Questions
DIN 42531 10NF250A Transformer Bushing Questions
What ratings does this bushing range cover?
From 1 kV to 52 kV and up to 5000 A, with various creepage distances to meet all environmental conditions.
What standard are outdoor bushings tested to?
IEC 60137.
Which specification governs the bushing detail?
Either the historical DIN specification, which is no longer a live standard but is still used widely by the transformer and distribution industry, or the current EN 50386 and EN 50180 range.
What air end termination is used?
Typically a screwed conductor arrangement.
Can you supply to a drawing rather than a catalogue number?
Yes, we produce to customer drawings and samples.
How do I choose the creepage?
From the environmental conditions at the installation. Describe the site on WhatsApp and we will recommend the class.
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Quote For DIN 42531 10NF250A Transformer Bushing
Send the quantity and any drawing you have. Enquiries are answered within 24 hours, and we produce to customer drawings and samples.