Porcelain Insulators For Power Utilities And Substations

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

What Gets In The Way

• A line section or substation that keeps flashing over after every wet season
• Wash programmes that cost more over a few years than re-insulating would
• Replacement parts for patterns that are no longer stocked locally
• Faults that cannot be located from the ground on a porcelain string

What This Sector Needs From A Supplier

• Creepage selected from the measured site pollution class
• Long creepage options within the same mounting envelope
• Patterns held across IEC, DIN, EN, ANSI, AS, GB and GOST
• Toughened glass discs that show a puncture visibly

Products For This Sector

High Voltage Transformer Bushings

DIN 24kV 630A Transformer Bushing CD525

High Voltage Transformer Bushings

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

EN 36/250/P3 Transformer Bushing Insulator 36kV

Pin Type Insulators

• Voltage 36 kV
• Height 600 mm
• Diameter 155 mm

ZS-770 Pin Post Porcelain Insulator 770mm Creepage

Glass Suspension Insulators

• Creepage Distance 770 mm
• Rated Electromechanical Failing Load 16 kN
• Lightning Impulse Withstand Voltage 190 kV

U70B Toughened Glass Disc Insulator For 33kV Lines

• Diameter 255 mm
• Creepage Distance 320 mm
• Socket Coupling 16 mm

Product Families To Start From

Transformer Bushing Insulators

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

Pin Type Insulators

Pin and pin post insulators carrying overhead line conductors on spindles, in ANSI, ShF, St, N, ZS, ALP and AS patterns.

Glass Suspension Insulators

Toughened glass disc insulators for transmission line suspension and tension strings, from 40kN to 160kN.

Fuse Cutout Bushings

Porcelain bodies and complete drop-out fuse cutouts for pole-mounted transformer protection from 10kV through 33kV.

Where These Parts End Up

• Substation transformers in coastal or industrial air
• Distribution feeders through cement, steel and chemical corridors
• Transmission strings in desert and semi-arid terrain
• Pole transformer protection with drop-out fuse cutouts

How We Deliver

• Products in service in more than 20 countries' power systems
• Export packing to your shipping route
• One year quality guarantee period
• Technical support on selection before and after the order

From Enquiry To Delivery

Describe the site conditions, including salt, dust and industrial fallout

We recommend a creepage class and matching pattern

Drawing issued for approval, with alternatives where the envelope is fixed

Production, routine testing and shipment to the project

Work In This Sector

Porcelain Transformer Bushings Supplied To Thailand And Uzbekistan

Power Utilities And Substations Questions

Guides For This Sector

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

Toughened Glass And Porcelain Insulators Compared

The practical difference between the two on an overhead line is not dielectric strength. It is what happens when one fails, and wh

Supplying Power Utilities And Substations

Send the drawing, the standard you work to and the quantity. We reply within 24 hours with a pattern confirmation and a date.