10kV 250A Screw Thread Transformer Bushing For 10kVA To 333kVA
Screw thread transformer bushing rated 10/12 kV at 250 A for 10 kVA to 333 kVA distribution transformers. 332 mm high, 270 mm minimum creepage, 2.66 kg.
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Product Overview
An 18 kV ANSI transformer bushing rated 25 A, built in the ANSI-18/50 body: 541 mm overall height, 184 mm h2, 101 mm d1, 214 mm h1, a 480 mm creep distance across 8 single umbrella sheds, and 3.5 kg net. The low 25 A rating suits instrument and auxiliary connections where the bushing has to withstand full system voltage but carries little current.
Why Buyers Choose This Part
- 25 A rating for auxiliary and instrument connections at full system voltage
- 480 mm creep distance across 8 sheds on a 541 mm body
- Meets ANSI standards for electrical and mechanical performance
- High-quality porcelain built for harsh outdoor environments
Where It Is Used
- 18 kV auxiliary and instrument transformer connections
- Low current high voltage terminals on ANSI equipment
- Switchgear interfaces needing full voltage withstand at low current
- Replacement on installed ANSI-18/50 bodies
Who It Suits
- Transformer and instrument transformer manufacturers
- Switchgear builders working to ANSI
- Distributors supplying low current HV bushings
What Goes Wrong Without The Right Part
- Over-specified high current bushings on low current connections
- Flashover on auxiliary terminals that see full system voltage
- Heat and weather degradation on exposed low current terminals
- Matching an installed ANSI-18/50 envelope exactly
How It Is Built
- 18 kV at 25 A
- ANSI-18/50 body: 541 mm H, 184 mm h2, 101 mm d1, 214 mm h1
- 480 mm creep distance
- 8 single umbrella sheds
- 3.5 kg weight
- Meets ANSI standards for electrical and mechanical performance
- Streamlined design reducing flashover likelihood
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.
| Creep Distance | 480 mm |
|---|---|
| Weight | 3.5 kg |
Materials
- High-quality electrical porcelain
- Threaded conductor
Process
- Forming
- Glazing
- Firing
- Conductor assembly
- Electrical and mechanical testing
Testing
- Dimensional verification against the ANSI-18/50 figures
- Electrical performance testing to ANSI requirements
- Surface and glaze inspection
Certification
- Meets ANSI standards for electrical and mechanical performance
- ISO 9001 quality management system
Customisation Options
- ANSI-15/50 and ANSI-27/50 bodies available
- Current rating and thread size to specification
- OEM and ODM supply
How It Compares
| The threaded ANSI 18kV bushing listing | Same ANSI-18/50 body and dimensions. This listing quotes the 25 A current rating explicitly for low current connections. |
|---|---|
| ANSI 15kV transformer bushing | A lower voltage class on a shorter 485 mm body with 310 mm creep distance. Match the class to the system voltage, not the current. |
Before You Order And After It Arrives
- Confirm the 25 A rating is sufficient for the connection
- Check the 541 mm height against the available clearance
- Keep the umbrella sheds clean, low current terminals are often neglected
- Match the thread to your terminal stud
18kV 25A HV ANSI Transformer Bushing Questions
Related Products
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- Voltage 36 kV
- Height 600 mm
- Diameter 155 mm
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- Wet Power Frequency Withstand Voltage 60 kV
- Net Weight Per Bushing 8 kg
- Height 453 mm
DIN 20NF630A Transformer Bushing 440mm Creepage
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- Nominal Creepage Distance 440 mm
- Net Weight 6.1 kg
- Height 385 mm
DIN 24kV 630A Transformer Bushing CD525
- Creepage Distance 525 mm
- Net Weight 6.8 kg
- Height 385 mm
Related Cases Guides And Applications
Transformer Bushing Selection A Guide For Engineers
What Is A High Voltage Transformer Insulator
The Five Jobs An Insulator Does Inside A High Voltage Transformer
Distribution Transformer Manufacturers
Power Utilities And Substations
Manufacturing To Your Drawing Or Sample
Selecting Creepage For The Pollution At Your Site
Quote For 18kV 25A HV ANSI Transformer Bushing
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