Transformer Bushing Insulators
Porcelain bushings that carry transformer winding leads through the tank wall, insulate them to ground and hold them in place.
42 products
Every Transformer Bushing Insulators We Make
24kV Porcelain Transformer Bushing 150kV BIL
- Wet Power Frequency Withstand Voltage 60 kV
- Net Weight Per Bushing 8 kg
- Height 453 mm
DIN 20NF630A Transformer Bushing 440mm Creepage
- 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
DT 33kV 250A Porcelain Transformer Bushing
- Rated Voltage 33 kV
DIN 20NF250A Transformer Bushing CD480
- Creepage Distance 480 mm
- Power Frequency Withstand Voltage 50 kV
- Lightning Impulse Withstand Voltage 125 kV
Russia 10kV Wall Bushing Ceramic Insulator IOR-10-3.75 II UKhL2
- Voltage 10 kV
- Current 630 A
- Lightning Impulse Test Voltage 80 kV
DIN 42530 1NF250A Low Voltage Transformer Bushing
- Creepage Distance 50 mm
- Net Weight 0.26 kg
IO-10/4 UKhL3 Post Bushing Insulator Catalogue Item
- Class GOST Ceramic Construction 10 kV
ANSI 15kV Transformer Porcelain Bushing
- Rated Transformer Bushing 15 kV
CB250 Outdoor Transformer Porcelain Bushing
Outdoor Pole Mounted Drop-Out Fuse Cutout RW11-10
- Impulse Voltage BIL On Both Ratings 110 kV
- Power Frequency Withstand Voltage 42 kV
DIN 42539 3kV 250A Transformer Bushing DT3KV-250A
- Creepage Distance 120 mm
DIN 42530 1kV 1250A Transformer Bushing
- Current 1250 A
- Creepage Distance 50 mm
- Weight 0.26 kg
EN 50180 24kV 250A Transformer Bushing Type 3
DIN 30NF250 36kV Transformer Bushing
- High Voltage Class 36 kV
EN 50180 24kV 250A Porcelain Transformer Bushing
- Standard IEC60137
DIN 42531 30NF250A Transformer Bushing
- DIN 42531 30NF Pattern 250 A
DIN 42531 10NF250A Transformer Bushing
- DIN 42531 10NF Pattern 250 A
DIN 42539 3kV 630A Outdoor Transformer Bushing DT 3/630
- Tank Hole Size 45 mm
- BIL 40 kV
- Creepage Distance 120 mm
DIN 42530 1kV 2000A Transformer Bushing
- Creepage Distance At This Rating 75 mm
- Weight 1.29 kg
- Creepage Distance 50 mm
BUCHA 24kV 160A HV Porcelain Bushing C-450
- Creepage Distance, Catalogued As C-450 450 mm
- Diameter 105 mm
- Height 550 mm
BUCHA 24kV 160A 450mm Ceramic Bushing Isolators
- Creepage Distance 450 mm
- Diameter 105 mm
- Height 550 mm
24kV To 36kV HV Porcelain Transformer Bushing
DIN 42531 20NF250A Transformer Bushing Isolators
- DIN 42531 20NF Pattern 250 A
DIN 20NF250A Transformer Bushing Insulators
- DIN 20NF Pattern 250 A
Threaded ANSI 18kV Transformer Bushing ANSI-18/50
- Overall Height H 541 mm
- Creep Distance 480 mm
- Weight 3.5 kg
18kV 25A HV ANSI Transformer Bushing
- Creep Distance 480 mm
- Weight 3.5 kg
15kV To 33kV Fuse Cut Out Bushing Insulator
DIN 10NF250A Transformer Bushing For Oil-Immersed Transformers
- DIN 10NF Pattern 250 A
DIN 42539 3kV 1000A Transformer Bushing
- Creepage Distance 125 mm
EN 50386 1kV 2000A Outdoor Transformer Bushing
- Creepage Distance 75 mm
- Weight 1.29 kg
DIN 42530 1kV 630A Ceramic Bushing DT 1/630
- Tank Hole Size 45 mm
- Creepage Distance 75 mm
- Weight 0.26 kg
1.2kV 400A Screw Thread Transformer Bushing
Threaded 1kV LV ANSI Transformer Bushing 30kV BIL
- Rated Voltage 1 kV
- BIL 30 kV
1.2kV 160A Transformer Bushing Insulator
DIN 42530 1kV 3150A Transformer Bushing DT 1/3150
- Tank Hole Size 90 mm
- Creepage Distance 75 mm
1.2kV 800A ANSI Low Voltage Bushing 30kV BIL
- Rated Voltage 1.2 kV
- BIL 30 kV
AS 15/50 Transformer Bushing Insulator 15kV
- Voltage 15 kV
- Height 485 mm
- Diameter 101 mm
AS 24/315 Transformer Bushing Insulator 24kV
- Voltage 24 kV
- Height 505 mm
- Diameter 108 mm
GB B-1/315 Transformer Bushing Insulator 1kV
- Voltage 1 kV
- Height 105 mm
- Diameter 65 mm
GB BLQ-10/315 Transformer Bushing Insulator 10kV
- Voltage 10 kV
- Height 240 mm
- Diameter 115 mm
EN 36/250/P3 Transformer Bushing Insulator 36kV
- Voltage 36 kV
- Height 600 mm
- Diameter 155 mm
Sub families
Families Within This Range
High Voltage Transformer Bushings
Bushings for the high voltage side of distribution and power transformers, from the 10kV class up to 36kV.
Low Voltage Transformer Bushings
Bushings for the 1kV and 3kV winding side of distribution transformers, from 250A up to 4000A.
Screw Thread Transformer Bushings
Bushings whose threaded stem takes the terminal connection directly, the arrangement used on ANSI terminal boards and smaller pole transformers.
Fuse Cutout Bushings
Porcelain bodies and complete drop-out fuse cutouts for pole-mounted transformer protection from 10kV through 33kV.
Wall Bushings And Other Insulators
Through-wall bushings, indoor bushing insulators and GOST pattern parts that fall outside the main transformer bushing families.
Problems this range solves
What Buyers Come To Us With
- Terminal boards that only accept the original dimensional pattern
- Creepage too short for the pollution at the installation site
- Drawings referencing DIN standards that are no longer maintained
- Long lead times on replacement bushings during a transformer overhaul
Core advantages
What The Range Gives You
- Ratings from 1kV through 52kV and up to 12500A across the range
- DIN 42530, 42531, 42539, 52432, 42533 and 42534 patterns in production
- Outdoor bushings manufactured and tested in accordance with IEC 60137
- Creepage distances selected for the site rather than assumed from voltage
Who it is for
Suited To
- Distribution and power transformer manufacturers
- Transformer repair and rewinding workshops
- Utility procurement teams holding spares
Application scenarios
Where It Is Used
- Oil-immersed distribution transformers
- Power transformers in substations
- Generator connections into transmission lines
- Transformer refurbishment and rewinding
Evidence
Related Case Studies
Questions
Transformer Bushing Insulators Questions
What voltage and current ratings do you cover?
From 1kV through to 52kV and up to 12500A, with a wide variety of creepage distances.
Do you still make the historical DIN patterns?
Yes. DIN specifications are no longer live standards but are still used widely by transformer and distribution manufacturers, so we keep both DIN and EN patterns in production.
What test standard applies to outdoor bushings?
All outdoor bushings are manufactured and tested in accordance with IEC 60137.
Can you work from a sample instead of a drawing?
Yes. Send a sample or photographs and we will produce to it.
How do I choose the creepage distance?
From the environmental conditions at the site. Describe the location, including any salt, cement dust or industrial fallout, and we will recommend the class.
Knowledge
Guides For This Range
Buying Guide
Transformer Bushing Selection A Guide For Engineers
Engineers responsible for power systems often face the challenge of selecting the most suitable transformer bushings for their app
Product GuideWhat Is A High Voltage Transformer Insulator
The high voltage transformer insulator is a physical barrier isolating the high voltage parts of a transformer from the lower volt
Design GuideHow To Choose Creepage Distance For A Polluted Site
Voltage sets the minimum creepage. The air at the site sets the required one. This guide works through the figures published acros
Talk To An Engineer About Transformer Bushing Insulators
Send the drawing, the pollution class at the site, or a photograph of the part you are replacing. A reply comes back within 24 hours.