Transformer primary-side interfaces

High Voltage Transformer Bushings

Compare plug-in epoxy bushings, bushing wells, tri-clamp wells and deadbreak apparatus bushings for distribution-transformer primary connections. Select by voltage and current rating, mating connector, tank-wall mounting, sealing and drawing interface.

High voltage transformer bushing for separable connector and tank-wall interface selection
Plug-in, bushing-well and deadbreak interfaces

High Voltage Transformer Bushing Configurations

Choose the connection family, then compare voltage and current class, mating system, conductor or terminal option, mounting method and engineering drawings for the transformer interface.

250 A / 630 A Distribution Transformer Plug-in Epoxy Bushing product view
Plug-in epoxy

250 A / 630 A Distribution Transformer Plug-in Epoxy Bushing

Plug-in epoxy bushing family for 250 A and 630 A distribution-transformer interfaces, selected by mating connection, tank-wall mounting, terminal arrangement and drawing dimensions.

Review ratings and drawings →

25 kV 200 A Transformer Bushing Well product view
Bushing well

25 kV 200 A Transformer Bushing Well

200 A transformer bushing well for 15 kV and 25 kV separable-connector systems, coordinated by insert compatibility, mounting interface and transformer connection arrangement.

Review ratings and drawings →

35 kV 200 A Tri-clamp Plastic Bushing Well product view
Tri-clamp well

35 kV 200 A Tri-clamp Plastic Bushing Well

Tri-clamp plastic bushing well for 15/25/35 kV, 200 A transformer interfaces, selected by stud, clamp, tank-wall opening, insulation duty and mating connector.

Review ratings and drawings →

15/25/28 kV 600/900 A Deadbreak Apparatus Bushing product view
15/25/28 kV deadbreak

15/25/28 kV 600/900 A Deadbreak Apparatus Bushing

Deadbreak apparatus bushing family for 15/25/28 kV transformer interfaces, with 600 A aluminum and 900 A copper configurations for separable deadbreak connections.

Review ratings and drawings →

35 kV 900 A Deadbreak Apparatus Bushing product view
35 kV deadbreak

35 kV 900 A Deadbreak Apparatus Bushing

35 kV deadbreak apparatus bushing for high-current transformer interfaces, coordinated by the 600 A or 900 A connection, terminal, mounting face and equipment clearances.

Review ratings and drawings →

Plug-in epoxy bushing

250 A / 630 A Distribution Transformer Plug-in Epoxy Bushing

Review the visible ratings and drawings below. Coordinate the mating connection, terminal or conductor, mounting face, sealing, clearances and required documents with the transformer interface.

Engineering drawings

Review mounting, terminal and interface geometry.

250 A / 630 A Distribution Transformer Plug-in Epoxy Bushing engineering drawing 1
250 A / 630 A Distribution Transformer Plug-in Epoxy Bushing engineering drawing 2
250 A / 630 A Distribution Transformer Plug-in Epoxy Bushing engineering drawing 3

Use these product drawings to compare the configuration, then include the transformer interface and required dimensions with the inquiry.

On small screens, scroll the table horizontally.

Selection parameter Configuration value
Current rating 250 A / 630 A
Product family Distribution transformer epoxy resin plug-in bushing
Mounting, terminal and dimensions Customizable

Request this bushing configuration

Bushing well

25 kV 200 A Transformer Bushing Well

Review the visible ratings and drawings below. Coordinate the mating connection, terminal or conductor, mounting face, sealing, clearances and required documents with the transformer interface.

Engineering drawings

Review mounting, terminal and interface geometry.

25 kV 200 A Transformer Bushing Well engineering drawing 1
25 kV 200 A Transformer Bushing Well engineering drawing 2
25 kV 200 A Transformer Bushing Well engineering drawing 3
25 kV 200 A Transformer Bushing Well engineering drawing 4
25 kV 200 A Transformer Bushing Well engineering drawing 5

Use these product drawings to compare the configuration, then include the transformer interface and required dimensions with the inquiry.

On small screens, scroll the table horizontally.

Selection parameter Configuration value
Rated voltage 15/25 kV
Rated current 200 A
Available voltage configurations 15 kV and 25 kV
Interface, mounting and dimensions Customizable

Request this bushing configuration

Tri-clamp bushing well

35 kV 200 A Tri-clamp Plastic Bushing Well

Review the visible ratings and drawings below. Coordinate the mating connection, terminal or conductor, mounting face, sealing, clearances and required documents with the transformer interface.

Engineering drawings

Review mounting, terminal and interface geometry.

35 kV 200 A Tri-clamp Plastic Bushing Well engineering drawing 1
35 kV 200 A Tri-clamp Plastic Bushing Well engineering drawing 2
35 kV 200 A Tri-clamp Plastic Bushing Well engineering drawing 3
35 kV 200 A Tri-clamp Plastic Bushing Well engineering drawing 4

Use these product drawings to compare the configuration, then include the transformer interface and required dimensions with the inquiry.

On small screens, scroll the table horizontally.

Selection parameter Configuration value
Rated voltage 15/25/35 kV
Power-frequency withstand 50 kV / 1 min
Continuous current 200 A
BIL / minimum corona 150 kV / 26 kV
Stud, mounting and dimensions Customizable

Request this bushing configuration

15/25/28 kV deadbreak bushing

15/25/28 kV 600/900 A Deadbreak Apparatus Bushing

Review the visible ratings and drawings below. Coordinate the mating connection, terminal or conductor, mounting face, sealing, clearances and required documents with the transformer interface.

Engineering drawings

Review mounting, terminal and interface geometry.

15/25/28 kV 600/900 A Deadbreak Apparatus Bushing engineering drawing 1
15/25/28 kV 600/900 A Deadbreak Apparatus Bushing engineering drawing 2
15/25/28 kV 600/900 A Deadbreak Apparatus Bushing engineering drawing 3

Use these product drawings to compare the configuration, then include the transformer interface and required dimensions with the inquiry.

On small screens, scroll the table horizontally.

Selection parameter Configuration value
Rated voltage 15/25/28 kV
Current and conductor configurations 600 A aluminum / 900 A copper
Available voltage configurations 15 kV, 25 kV and 28 kV
Terminal, mounting, dimensions and duty Customizable

Request this bushing configuration

35 kV deadbreak bushing

35 kV 900 A Deadbreak Apparatus Bushing

Review the visible ratings and drawings below. Coordinate the mating connection, terminal or conductor, mounting face, sealing, clearances and required documents with the transformer interface.

Engineering drawings

Review mounting, terminal and interface geometry.

35 kV 900 A Deadbreak Apparatus Bushing engineering drawing 1
35 kV 900 A Deadbreak Apparatus Bushing engineering drawing 2
35 kV 900 A Deadbreak Apparatus Bushing engineering drawing 3

Use these product drawings to compare the configuration, then include the transformer interface and required dimensions with the inquiry.

On small screens, scroll the table horizontally.

Selection parameter Configuration value
Rated voltage 35 kV
Current configurations 600 A / 900 A
Product family 35 kV deadbreak apparatus bushing
Terminal, mounting and dimensions Customizable

Request this bushing configuration

Transformer interface selection

Specify the High Voltage Bushing Interface

After choosing the bushing family, align voltage and current duty, mating connector, terminal or conductor, tank-wall mounting, sealing, clearances, inspection documents, packing and destination in one quotation scope.

External separable connectorTank-wall sealing faceInternal transformer conductorIllustrative high voltage transformer bushing interface topology
Illustrative primary-interface topology. Use the selected bushing drawing to coordinate the mating connector, tank wall, conductor and clearance arrangement.
Required engineering inputs

Confirm the Transformer Bushing Requirements

Electrical duty and mating connection

State voltage class, continuous current, BIL or insulation requirements, connector or insert family, conductor or terminal material, orientation and loadbreak or deadbreak connection requirement.

Tank-wall mounting and sealing

Provide the tank-wall opening, clamp or flange, mounting face, gasket, clearance envelope, external connection orientation and internal lead route.

Documents and commercial scope

Include the transformer drawing, interface photos, applicable standard, inspection and document requirements, quantity, destination, packing and requested delivery timing.

OEM / ODM configuration

Coordinate the selected bushing family, mating connector, interface geometry, conductor or terminal, marking and transformer integration requirements.

Inspection and test documents

Define the required inspections, test records, traceability, nameplate details and document language for the order.

Packing and delivery planning

State quantity, destination, protective packing, logistics constraints, consignee details and requested delivery date.

Order coordination workflow

From Specification to Delivery

A high voltage bushing order moves through six coordinated steps covering interface confirmation, materials, production, inspection, packing and dispatch.

  1. 01

    Technical confirmation

    Confirm bushing family, voltage and current duty, mating connection, mounting, sealing and drawings.

  2. 02

    Materials and purchasing

    Align material, conductor or terminal, gasket, marking and any configuration-specific supply requirements.

  3. 03

    Production planning

    Set quantity, configuration, manufacturing route, inspection points and required delivery window.

  4. 04

    Manufacturing coordination

    Manufacture or assemble the confirmed bushing configuration and transformer interface requirements.

  5. 05

    Inspection and packing

    Complete the specified inspections, identification, protective packing and shipping documentation.

  6. 06

    Dispatch and delivery

    Coordinate destination, logistics method, consignee details and planned dispatch timing.

Discuss order requirements →

Engineering selection FAQ

High Voltage Bushing FAQ

Use these answers to compare connection families and prepare the electrical, mechanical and commercial inputs for a high voltage transformer bushing quotation.

How do I select a high voltage transformer bushing?

Start with rated voltage and continuous current, then identify the separable connector or terminal family, insulation coordination, tank-wall mounting method, sealing interface and available clearance envelope. Use the product drawings to compare the final mechanical interface.

What is the difference between a bushing well and an apparatus bushing?

A bushing well receives a compatible insert and separable connector as part of the connection system. An apparatus bushing provides the equipment-side interface for the applicable deadbreak or other separable connection. Match the complete mating system, rating and mounting arrangement.

When is a tri-clamp transformer bushing well used?

A tri-clamp bushing well is selected where the transformer tank-wall design uses a removable clamp and gasket interface. Confirm the opening, stud, clamp geometry, sealing face, required voltage class and mating connector before quotation.

Which electrical and mechanical details should be included in the inquiry?

Include rated voltage, continuous current, BIL or insulation requirements, mating connector or insert, conductor and terminal arrangement, tank-wall opening, clamp or flange, gasket, clearances, orientation and any available transformer drawing or interface photos.

Can mounting, terminal and conductor arrangements be customized?

Mounting, terminal, conductor, marking and dimensional alternatives can be reviewed for the selected bushing family. Provide the transformer interface, quantity, destination, inspection documents, packing needs and required delivery timing with the RFQ.

High voltage bushing RFQ

Request High Voltage Bushing Support

Send the selected family where known together with the transformer electrical duty and mechanical interface so SUVELL can review the configuration and quotation scope.

Include with your inquiry

Rated voltage, current and insulation requirementsTransformer application and applicable standardMating connector, insert or deadbreak systemTank-wall mounting, sealing and clearancesTerminal or conductor material and orientationQuantity, destination, documents and delivery timing

Send high voltage bushing RFQ →