DIN 10NF250A Transformer Bushing For Oil-Immersed Transformers

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Product Overview

A DIN 10NF250A bushing for oil-immersed distribution transformers. The insulation body is high alumina porcelain C110 and the glaze can be supplied grey, brown or white. It complies with DIN standard, specifically DIN 42531 and DIN 40680. Customers choose between brass rod conductors and flexible wire depending on how the connection is made at the terminal.

• DIN 42531

Why Buyers Choose This Part

• High alumina porcelain C110 insulation body
• Glaze available in grey, brown or white to match existing hardware
• Choice of brass rod conductor or flexible wire
• Complies with DIN 42531 and DIN 40680

Where It Is Used

• Oil-immersed distribution transformers at the 10 kV class
• Terminal boards where a flexible conductor is preferred to a rigid rod
• Fleets standardised on a particular glaze colour
• Transformer manufacture to DIN 42531 and DIN 40680

Who It Suits

• Oil-immersed distribution transformer manufacturers
• Utilities matching glaze colour across a network
• Distributors supplying DIN 10NF bushings

What Goes Wrong Without The Right Part

• Rigid conductors that make an awkward terminal connection
• Mixed glaze colours across a transformer fleet
• Porcelain grades that do not meet the C110 alumina specification
• Drawings referencing DIN 40680 that generic suppliers do not cover

How It Is Built

• DIN 10NF250A pattern
• Insulation body of high alumina porcelain C110
• Glaze colour grey, brown or white
• Complies with DIN standard, DIN 42531 and DIN 40680
• Brass rod conductor or flexible wire options
• For oil-immersed type distribution transformers

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 10NF Pattern	250 A

Materials

• High alumina porcelain C110
• Brass rod conductor or flexible wire

Process

• Forming
• Glazing in the selected colour
• Firing
• Conductor assembly
• Routine electrical test

Testing

• Porcelain grade verification against the C110 specification
• Glaze colour consistency check
• Conductor fit and contact inspection

Certification

• Complies with DIN 42531 and DIN 40680
• ISO 9001 quality management system

Customisation Options

• Glaze colour selected from grey, brown or white
• Brass rod conductor or flexible wire
• Special lengths and screw sizes to specification

How It Compares

DIN 42531 10NF 250A ceramic insulator	The same 10NF250A family. This listing specifies the C110 alumina porcelain grade, the glaze colour options and the conductor choice explicitly.
DIN 20NF250A	Same 250 A current rating at the 20 kV class. The NF number sets the voltage, so match it to the transformer.

Before You Order And After It Arrives

• Choose the glaze colour to match the rest of your transformer hardware
• Decide between brass rod and flexible wire from how the terminal is made up
• Confirm the drawing references DIN 42531 or DIN 40680
• Use only on oil-immersed distribution transformers as specified

DIN 10NF250A Transformer Bushing For Oil-Immersed Transformers Questions

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