Threaded ANSI 18kV Transformer Bushing ANSI-18/50
Screw Thread Transformer Bushings
Product Overview
A threaded ANSI transformer bushing in the ANSI-18/50 model, 541 mm in overall height with an h2 of 184 mm, a d1 of 101 mm and an h1 of 214 mm. Arcing distance is 480 mm across 8 single umbrella sheds and the unit weighs 3.5 kg. It meets ANSI standards for electrical and mechanical performance and uses a streamlined design that reduces flashover likelihood and improves heat dissipation.
Key benefits
Why Buyers Choose This Part
- 480 mm arcing distance across 8 single umbrella sheds
- 3.5 kg unit weight on a 541 mm tall body
- Meets ANSI standards for electrical and mechanical performance
- Streamlined design that cuts flashover risk and helps heat dissipate
Application scenarios
Where It Is Used
- 18 kV class transformers on ANSI terminal patterns
- Power transformers and switchgear needing an ANSI interface
- Outdoor installations in harsh environments
- Projects selecting between ANSI-15/50, 18/50 and 27/50 models
Who it is for
Who It Suits
- Transformer manufacturers building to ANSI
- Switchgear builders needing an ANSI bushing interface
- Distributors supplying the ANSI threaded bushing range
Problems it solves
What Goes Wrong Without The Right Part
- Arcing distance too short for the 18 kV class
- Heat build-up at the terminal under sustained load
- Flashover on bushings with shed profiles that collect dirt
- Selecting between three ANSI models without dimensional data
Technical features
How It Is Built
- ANSI-18/50 model
- 541 mm overall height H
- 184 mm h2, 101 mm d1, 214 mm h1
- 480 mm creep distance
- 8 single umbrella sheds
- 3.5 kg weight
- Threaded terminal arrangement
- Meets ANSI standards for electrical and mechanical performance
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.
| Overall Height H | 541 mm |
|---|---|
| Creep Distance | 480 mm |
| Weight | 3.5 kg |
Materials
Materials
- High-quality electrical porcelain
- Threaded conductor
Manufacturing
Process
- Forming
- Glazing
- Firing
- Thread machining and assembly
- Electrical and mechanical testing
Quality control
Testing
- Dimensional check against the ANSI-18/50 model figures
- Electrical performance testing to ANSI requirements
- Thread gauge check on the terminal
Certifications
Certification
- Meets ANSI standards for electrical and mechanical performance
- ISO 9001 quality management system
Customisation
Customisation Options
- ANSI-15/50 and ANSI-27/50 models also available
- Thread size cut to your terminal specification
- OEM and ODM supply
Comparison
How It Compares
| ANSI-15/50 | The 15/50 is 485 mm tall with a 310 mm creep distance across 5 sheds at 2.8 kg. The 18/50 adds height, three more sheds and 170 mm of creepage. |
|---|---|
| ANSI-27/50 | The 27/50 goes to 722 mm height with 830 mm creep distance across 12 sheds at 5 kg, for the higher voltage class. |
Use guide
Before You Order And After It Arrives
- Check the 541 mm height clears the tank structure
- Match the thread size to your terminal stud
- Compare creep distance across the three models before selecting
- Keep the umbrella sheds clean to preserve the flashover margin
Questions
Threaded ANSI 18kV Transformer Bushing ANSI-18/50 Questions
What are the dimensions of the ANSI-18/50?
541 mm overall height, 184 mm h2, 101 mm d1 and 214 mm h1, with a 480 mm creep distance and 8 single umbrella sheds.
What does it weigh?
3.5 kg.
What other ANSI models are available?
ANSI-15/50 at 485 mm height, 310 mm creep and 5 sheds weighing 2.8 kg, and ANSI-27/50 at 722 mm height, 830 mm creep and 12 sheds weighing 5 kg.
Does it meet ANSI requirements?
Yes, for both electrical and mechanical performance.
Why does the shed design matter?
The streamlined design reduces the likelihood of flashovers and improves heat dissipation.
Can you cut a different thread size?
Yes, we manufacture to customer specifications including different screw sizes.
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Quote For Threaded ANSI 18kV Transformer Bushing ANSI-18/50
Send the quantity and any drawing you have. Enquiries are answered within 24 hours, and we produce to customer drawings and samples.