Transformer Bushing Insulators

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Porcelain bushings that carry transformer winding leads through the tank wall, insulate them to ground and hold them in place.

Every Transformer Bushing Insulators We Make

High Voltage Transformer Bushings

24kV Porcelain Transformer Bushing 150kV BIL

High Voltage Transformer Bushings

• Wet Power Frequency Withstand Voltage 60 kV
• Net Weight Per Bushing 8 kg
• Height 453 mm

DIN 20NF630A Transformer Bushing 440mm Creepage

High Voltage Transformer Bushings

• Nominal Creepage Distance 440 mm
• Net Weight 6.1 kg
• Height 385 mm

DIN 24kV 630A Transformer Bushing CD525

High Voltage Transformer Bushings

• Creepage Distance 525 mm
• Net Weight 6.8 kg
• Height 385 mm

DT 33kV 250A Porcelain Transformer Bushing

High Voltage Transformer Bushings

• Rated Voltage 33 kV

DIN 20NF250A Transformer Bushing CD480

Wall Bushings And Other Insulators

• 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

Low Voltage Transformer Bushings

• Voltage 10 kV
• Current 630 A
• Lightning Impulse Test Voltage 80 kV

DIN 42530 1NF250A Low Voltage Transformer Bushing

Wall Bushings And Other Insulators

• Creepage Distance 50 mm
• Net Weight 0.26 kg

IO-10/4 UKhL3 Post Bushing Insulator Catalogue Item

Screw Thread Transformer Bushings

• Class GOST Ceramic Construction 10 kV

ANSI 15kV Transformer Porcelain Bushing

Low Voltage Transformer Bushings

• Rated Transformer Bushing 15 kV

CB250 Outdoor Transformer Porcelain Bushing

Fuse Cutout Bushings

Outdoor Pole Mounted Drop-Out Fuse Cutout RW11-10

Low Voltage Transformer Bushings

• Impulse Voltage BIL On Both Ratings 110 kV
• Power Frequency Withstand Voltage 42 kV

DIN 42539 3kV 250A Transformer Bushing DT3KV-250A

Low Voltage Transformer Bushings

• Creepage Distance 120 mm

DIN 42530 1kV 1250A Transformer Bushing

High Voltage Transformer Bushings

• Current 1250 A
• Creepage Distance 50 mm
• Weight 0.26 kg

EN 50180 24kV 250A Transformer Bushing Type 3

High Voltage Transformer Bushings

DIN 30NF250 36kV Transformer Bushing

High Voltage Transformer Bushings

• High Voltage Class 36 kV

EN 50180 24kV 250A Porcelain Transformer Bushing

High Voltage Transformer Bushings

• Standard IEC60137

DIN 42531 30NF250A Transformer Bushing

High Voltage Transformer Bushings

• DIN 42531 30NF Pattern 250 A

DIN 42531 10NF250A Transformer Bushing

Low Voltage Transformer Bushings

• DIN 42531 10NF Pattern 250 A

DIN 42539 3kV 630A Outdoor Transformer Bushing DT 3/630

Low Voltage Transformer Bushings

• Tank Hole Size 45 mm
• BIL 40 kV
• Creepage Distance 120 mm

DIN 42530 1kV 2000A Transformer Bushing

Wall Bushings And Other Insulators

• Creepage Distance At This Rating 75 mm
• Weight 1.29 kg
• Creepage Distance 50 mm

BUCHA 24kV 160A HV Porcelain Bushing C-450

Wall Bushings And Other Insulators

• Creepage Distance, Catalogued As C-450 450 mm
• Diameter 105 mm
• Height 550 mm

BUCHA 24kV 160A 450mm Ceramic Bushing Isolators

High Voltage Transformer Bushings

• Creepage Distance 450 mm
• Diameter 105 mm
• Height 550 mm

24kV To 36kV HV Porcelain Transformer Bushing

High Voltage Transformer Bushings

DIN 42531 20NF250A Transformer Bushing Isolators

High Voltage Transformer Bushings

• DIN 42531 20NF Pattern 250 A

DIN 20NF250A Transformer Bushing Insulators

Screw Thread Transformer Bushings

• DIN 20NF Pattern 250 A

Threaded ANSI 18kV Transformer Bushing ANSI-18/50

High Voltage Transformer Bushings

• Overall Height H 541 mm
• Creep Distance 480 mm
• Weight 3.5 kg

18kV 25A HV ANSI Transformer Bushing

Fuse Cutout Bushings

• Creep Distance 480 mm
• Weight 3.5 kg

15kV To 33kV Fuse Cut Out Bushing Insulator

High Voltage Transformer Bushings

DIN 10NF250A Transformer Bushing For Oil-Immersed Transformers

Low Voltage Transformer Bushings

• DIN 10NF Pattern 250 A

DIN 42539 3kV 1000A Transformer Bushing

Low Voltage Transformer Bushings

• Creepage Distance 125 mm

EN 50386 1kV 2000A Outdoor Transformer Bushing

Low Voltage Transformer Bushings

• Creepage Distance 75 mm
• Weight 1.29 kg

DIN 42530 1kV 630A Ceramic Bushing DT 1/630

Screw Thread Transformer Bushings

• Tank Hole Size 45 mm
• Creepage Distance 75 mm
• Weight 0.26 kg

1.2kV 400A Screw Thread Transformer Bushing

Screw Thread Transformer Bushings

Threaded 1kV LV ANSI Transformer Bushing 30kV BIL

Screw Thread Transformer Bushings

• Rated Voltage 1 kV
• BIL 30 kV

1.2kV 160A Transformer Bushing Insulator

Low Voltage Transformer Bushings

DIN 42530 1kV 3150A Transformer Bushing DT 1/3150

Low Voltage Transformer Bushings

• Tank Hole Size 90 mm
• Creepage Distance 75 mm

1.2kV 800A ANSI Low Voltage Bushing 30kV BIL

High Voltage Transformer Bushings

• Rated Voltage 1.2 kV
• BIL 30 kV

AS 15/50 Transformer Bushing Insulator 15kV

High Voltage Transformer Bushings

• Voltage 15 kV
• Height 485 mm
• Diameter 101 mm

AS 24/315 Transformer Bushing Insulator 24kV

Low Voltage Transformer Bushings

• Voltage 24 kV
• Height 505 mm
• Diameter 108 mm

GB B-1/315 Transformer Bushing Insulator 1kV

High Voltage Transformer Bushings

• Voltage 1 kV
• Height 105 mm
• Diameter 65 mm

GB BLQ-10/315 Transformer Bushing Insulator 10kV

High Voltage Transformer Bushings

• 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

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.

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

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

Suited To

• Distribution and power transformer manufacturers
• Transformer repair and rewinding workshops
• Utility procurement teams holding spares

Where It Is Used

• Oil-immersed distribution transformers
• Power transformers in substations
• Generator connections into transmission lines
• Transformer refurbishment and rewinding

Industries We Supply With This Range

Distribution Transformer Manufacturers

Terminal boards designed around one bushing pattern that the original supplier has discontinued

Power Utilities And Substations

A line section or substation that keeps flashing over after every wet season

Related Case Studies

Porcelain Transformer Bushings Supplied To Thailand And Uzbekistan

Transformer Bushing Insulators Questions

Guides For This Range

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

What 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

How 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.