Low voltage transformer bushing for a secondary-side tank-wall interface
Transformer secondary interfaces

Low Voltage Transformer Bushings

Compare epoxy molded, integral tri-clamp and porcelain low voltage transformer bushings for liquid-filled distribution transformer secondary connections. Select by rated current, terminal arrangement, tank-wall mounting and sealing interface.

Epoxy, tri-clamp and porcelain configurations

Bushing Configurations

Choose the insulation and mounting family, then compare the available rated-current configuration, terminal or conductor arrangement, tank-wall interface, sealing and drawing details.

1.2 kV 3000 A Epoxy LV Bushing product view
Epoxy secondary

1.2 kV 3000 A Epoxy LV Bushing

1.2 kV, 3000 A epoxy secondary bushing for liquid-filled transformer tank-wall interfaces, with copper or aluminum conductor selection.

1.2 kV 2000 A Epoxy LV Bushing product view
Epoxy secondary

1.2 kV 2000 A Epoxy LV Bushing

1.2 kV, 2000 A epoxy secondary bushing for liquid-filled transformer tank-wall interfaces, with conductor and terminal details coordinated to the drawing.

1.2 kV 1600 A Epoxy LV Bushing product view
Epoxy secondary

1.2 kV 1600 A Epoxy LV Bushing

1.2 kV, 1600 A epoxy secondary bushing for transformer tank-wall mounting, terminal arrangement and sealing coordination.

1.2 kV 1000 A Epoxy LV Bushing product view
Epoxy secondary

1.2 kV 1000 A Epoxy LV Bushing

1.2 kV, 1000 A epoxy secondary bushing for liquid-filled transformer applications, with copper or aluminum conductor alternatives.

630 A Epoxy LV Bushing product view
Epoxy secondary

630 A Epoxy LV Bushing

630 A epoxy low voltage transformer bushing for secondary-side terminal, tank-wall mounting and sealing review.

400 A Low Voltage Epoxy Resin Bushing product view
Epoxy secondary

400 A Low Voltage Epoxy Resin Bushing

400 A epoxy resin low voltage bushing for transformer secondary connections and drawing-based interface coordination.

Epoxy secondary

1.2 kV 3000 A Epoxy LV Bushing

Review the configuration values and product image or drawing below. Coordinate the terminal arrangement, conductor, tank-wall mounting, sealing, clearances and required documents before quotation.

Engineering drawing
1.2 kV 3000 A Epoxy LV Bushing engineering drawing

On small screens, scroll the table horizontally.

Selection parameter Configuration value
Rated voltage 1.2 kV
Rated current 3000 A
Application Secondary bushing in liquid-filled transformers
Conductor alternatives Copper or aluminum
Copper conductor construction C110 electrolytic copper with silver-brazed connections

Request this bushing configuration

Epoxy secondary

1.2 kV 2000 A Epoxy LV Bushing

Review the configuration values and product image or drawing below. Coordinate the terminal arrangement, conductor, tank-wall mounting, sealing, clearances and required documents before quotation.

Engineering drawing
1.2 kV 2000 A Epoxy LV Bushing engineering drawing

On small screens, scroll the table horizontally.

Selection parameter Configuration value
Rated voltage 1.2 kV
Rated current 2000 A
Application Secondary bushing in liquid-filled transformers
Conductor alternatives Copper or aluminum
Copper conductor construction C110 electrolytic copper with silver-brazed connections

Request this bushing configuration

Epoxy secondary

1.2 kV 1600 A Epoxy LV Bushing

Review the configuration values and product image or drawing below. Coordinate the terminal arrangement, conductor, tank-wall mounting, sealing, clearances and required documents before quotation.

Engineering drawing
1.2 kV 1600 A Epoxy LV Bushing engineering drawing

On small screens, scroll the table horizontally.

Selection parameter Configuration value
Rated voltage 1.2 kV
Rated current 1600 A
Application Secondary bushing in liquid-filled transformers
Conductor alternatives Copper or aluminum
Copper conductor construction C110 electrolytic copper with silver-brazed connections

Request this bushing configuration

Epoxy secondary

1.2 kV 1000 A Epoxy LV Bushing

Review the configuration values and product image or drawing below. Coordinate the terminal arrangement, conductor, tank-wall mounting, sealing, clearances and required documents before quotation.

Engineering drawing
1.2 kV 1000 A Epoxy LV Bushing engineering drawing

On small screens, scroll the table horizontally.

Selection parameter Configuration value
Rated voltage 1.2 kV
Rated current 1000 A
Application Secondary bushing in liquid-filled transformers
Conductor alternatives Copper or aluminum
Copper conductor construction C110 electrolytic copper with silver-brazed connections

Request this bushing configuration

Epoxy secondary

630 A Epoxy LV Bushing

Review the configuration values and product image or drawing below. Coordinate the terminal arrangement, conductor, tank-wall mounting, sealing, clearances and required documents before quotation.

Product interface view
630 A Epoxy LV Bushing interface detail

On small screens, scroll the table horizontally.

Selection parameter Configuration value
Rated voltage 1.2 kV
Rated current 630 A
Application Secondary bushing in liquid-filled transformers
Conductor alternatives Copper or aluminum
Copper conductor construction C110 electrolytic copper with silver-brazed connections

Request this bushing configuration

Epoxy secondary

400 A Low Voltage Epoxy Resin Bushing

Review the configuration values and product image or drawing below. Coordinate the terminal arrangement, conductor, tank-wall mounting, sealing, clearances and required documents before quotation.

Product interface view
400 A Low Voltage Epoxy Resin Bushing interface detail

On small screens, scroll the table horizontally.

Selection parameter Configuration value
Rated voltage 1.2 kV
Rated current 400 A
Application Secondary bushing in liquid-filled transformers
Conductor alternatives Copper or aluminum
Copper conductor construction C110 electrolytic copper with silver-brazed connections

Request this bushing configuration

Tri-clamp secondary

5/8 in Integral Clamp Bushing

Review the configuration values and product image or drawing below. Coordinate the terminal arrangement, conductor, tank-wall mounting, sealing, clearances and required documents before quotation.

Product interface view
5/8 in Integral Clamp Bushing interface detail

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Selection parameter Configuration value
Voltage class 1.2 kV
Basic impulse level (BIL) 30 kV
AC withstand voltage 10 kV / min
Continuous current 1500 A
Operating temperature -40°C to +140°C
Environmental condition Indoor (no salt fog / chemical corrosion)
Conductor material Copper (C11000)
Insulation body color Black
Recommended tank-hole diameter 45.0 ±0.5 mm
Sealing gasket As per source left-view diagram
Customization Dimensions adjustable per customer requirements

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Tri-clamp secondary

1 in Integral Clamp Bushing

Review the configuration values and product image or drawing below. Coordinate the terminal arrangement, conductor, tank-wall mounting, sealing, clearances and required documents before quotation.

Product interface view
1 in Integral Clamp Bushing interface detail

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Selection parameter Configuration value
Rated voltage 1.2 kV (1200 V)
Rated current 1200 A
Insulation material Thermoplastic (PA6 / PC / PET)
Flammability rating UL94 V-0
Mounting type Flange mount (with gasket)
Termination Stud terminals (copper, tin-plated)
Creepage distance ≥ 20 mm
Operating temperature -40°C to +105°C
Dielectric withstand 3 kV / 1 min
Insulation resistance ≥ 1000 MΩ
Standards IEC 60076-22; UL optional

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Porcelain bushing

1 kV 250 A Porcelain Bushing

Review the configuration values and product image or drawing below. Coordinate the terminal arrangement, conductor, tank-wall mounting, sealing, clearances and required documents before quotation.

Product interface view
1 kV 250 A Porcelain Bushing interface detail

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Selection parameter Configuration value
Rated designation 1 kV / 250 A
Porcelain family reference — 1 kV (max / 60 s PF dry / damp / impulse dry) — / 8 kV / — / —
Porcelain family reference — 6 kV (max / 60 s PF dry / damp / impulse dry) 7.2 kV / 26 kV / 23 kV / 60 kV
Porcelain family reference — 10 kV (max / 60 s PF dry / damp / impulse dry) 12 kV / 42 kV / 30 kV / 75 kV
Porcelain family reference — 20 kV (max / 60 s PF dry / damp / impulse dry) 24 kV / 58 kV / 50 kV / 125 kV
Porcelain family reference — 35 kV (max / 60 s PF dry / damp / impulse dry) 40.5 kV / 98 kV / 80 kV / 200 kV
Porcelain family reference — 66 kV (max / 60 s PF dry / damp / impulse dry) 72.5 kV / 147 kV / 140 kV / 325 kV

Request this bushing configuration

Porcelain bushing

1 kV 400 A Porcelain Bushing

Review the configuration values and product image or drawing below. Coordinate the terminal arrangement, conductor, tank-wall mounting, sealing, clearances and required documents before quotation.

Product interface view
1 kV 400 A Porcelain Bushing interface detail

On small screens, scroll the table horizontally.

Selection parameter Configuration value
Rated designation 1 kV / 400 A
Porcelain family reference — 1 kV (max / 60 s PF dry / damp / impulse dry) — / 8 kV / — / —
Porcelain family reference — 6 kV (max / 60 s PF dry / damp / impulse dry) 7.2 kV / 26 kV / 23 kV / 60 kV
Porcelain family reference — 10 kV (max / 60 s PF dry / damp / impulse dry) 12 kV / 42 kV / 30 kV / 75 kV
Porcelain family reference — 20 kV (max / 60 s PF dry / damp / impulse dry) 24 kV / 58 kV / 50 kV / 125 kV
Porcelain family reference — 35 kV (max / 60 s PF dry / damp / impulse dry) 40.5 kV / 98 kV / 80 kV / 200 kV
Porcelain family reference — 66 kV (max / 60 s PF dry / damp / impulse dry) 72.5 kV / 147 kV / 140 kV / 325 kV

Request this bushing configuration

Porcelain bushing

1 kV 800 A Porcelain Bushing

Review the configuration values and product image or drawing below. Coordinate the terminal arrangement, conductor, tank-wall mounting, sealing, clearances and required documents before quotation.

Product interface view
1 kV 800 A Porcelain Bushing interface detail

On small screens, scroll the table horizontally.

Selection parameter Configuration value
Rated designation 1 kV / 800 A
Porcelain family reference — 1 kV (max / 60 s PF dry / damp / impulse dry) — / 8 kV / — / —
Porcelain family reference — 6 kV (max / 60 s PF dry / damp / impulse dry) 7.2 kV / 26 kV / 23 kV / 60 kV
Porcelain family reference — 10 kV (max / 60 s PF dry / damp / impulse dry) 12 kV / 42 kV / 30 kV / 75 kV
Porcelain family reference — 20 kV (max / 60 s PF dry / damp / impulse dry) 24 kV / 58 kV / 50 kV / 125 kV
Porcelain family reference — 35 kV (max / 60 s PF dry / damp / impulse dry) 40.5 kV / 98 kV / 80 kV / 200 kV
Porcelain family reference — 66 kV (max / 60 s PF dry / damp / impulse dry) 72.5 kV / 147 kV / 140 kV / 325 kV

Request this bushing configuration

Porcelain bushing

200 A to 3000 A Porcelain Bushing

Review the configuration values and product image or drawing below. Coordinate the terminal arrangement, conductor, tank-wall mounting, sealing, clearances and required documents before quotation.

Product interface view
200 A to 3000 A Porcelain Bushing interface detail

On small screens, scroll the table horizontally.

Selection parameter Configuration value
Rated designation 200 A to 3000 A
Porcelain family reference — 1 kV (max / 60 s PF dry / damp / impulse dry) — / 8 kV / — / —
Porcelain family reference — 6 kV (max / 60 s PF dry / damp / impulse dry) 7.2 kV / 26 kV / 23 kV / 60 kV
Porcelain family reference — 10 kV (max / 60 s PF dry / damp / impulse dry) 12 kV / 42 kV / 30 kV / 75 kV
Porcelain family reference — 20 kV (max / 60 s PF dry / damp / impulse dry) 24 kV / 58 kV / 50 kV / 125 kV
Porcelain family reference — 35 kV (max / 60 s PF dry / damp / impulse dry) 40.5 kV / 98 kV / 80 kV / 200 kV
Porcelain family reference — 66 kV (max / 60 s PF dry / damp / impulse dry) 72.5 kV / 147 kV / 140 kV / 325 kV

Request this bushing configuration

Engineering selection inputs

Bushing Interface Inputs

After selecting a low voltage bushing configuration, align conductor material, terminal type, tank-wall opening, mounting face, sealing, electrical duty, inspection documents, packing and destination in one quotation scope.

External terminalTransformer tank wallInternal conductorLow voltage transformer bushing interface topology
Illustrative secondary-interface topology. Use the selected configuration drawing to coordinate the final terminal, tank wall, conductor and clearance arrangement.

Confirm the Required Transformer Bushing Inputs

Electrical duty and terminal arrangement

State rated voltage and current, conductor material, terminal form, plating, connection orientation and transformer secondary-circuit requirements.

Tank-wall mounting and sealing

Provide the tank-wall opening, flange or clamp, mounting face, gasket, clearances, transformer layout and any dimensional constraints.

Documents and commercial scope

Include drawings, interface photos, nameplate details, quantity, destination, inspection requirements, marking, packing and requested delivery timing.

Coordinate Production, Inspection and Delivery

Keep the selected configuration, electrical and mechanical interfaces, documentation, inspection and delivery requirements together for engineering and commercial review.

Low voltage transformer bushing production for OEM and ODM coordination

OEM / ODM production coordination

Coordinate terminal options, interface geometry, conductor, marking and transformer integration requirements with the selected configuration.

Low voltage transformer bushing inspection and testing

Inspection and test documentation

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

Low voltage transformer bushing packing and delivery preparation

Packing and delivery planning

State quantity, destination, packing method, logistics constraints, requested schedule and replacement or project-stock use.

Engineering selection FAQ

Technical Selection FAQ

Use these answers to compare bushing construction, ratings, terminal arrangements, tank-wall interfaces and the inputs needed for quotation.

How do I choose a low voltage transformer bushing family?

Start with the transformer secondary connection, insulation construction, rated current, tank-wall mounting method and terminal form. Then compare epoxy molded, integral tri-clamp and porcelain configurations against the required electrical and mechanical interface.

What information is needed for a replacement bushing RFQ?

Provide the existing bushing nameplate or designation, front and side photos, transformer position, rated voltage and current, mounting opening, flange or clamp arrangement, conductor and terminal details, gasket condition, dimensions and available drawing.

What is the difference between epoxy, tri-clamp and porcelain bushings?

Epoxy molded bushings support compact secondary interfaces across several current ratings. Integral tri-clamp bushings use an external clamp and gasket arrangement. Porcelain bushings are selected around the porcelain body, terminal arrangement, mounting face, sealing and required electrical duty.

Which electrical and mechanical details must be coordinated?

Coordinate rated voltage and current, withstand or insulation requirements, conductor material, terminal type and orientation, tank-wall opening, flange or clamp, gasket, clearances, creepage where applicable and the final outline drawing.

Can terminal and mounting arrangements be customized?

Terminal, conductor, plating, mounting and sealing alternatives can be reviewed against the selected configuration. Include the transformer interface, continuous-current duty, dimensional constraints, quantity and required documents with the inquiry.

Request engineering support

Request a Bushing RFQ

Send the selected bushing configuration with the transformer rating, secondary interface, mounting, sealing, drawing, quantity, document and delivery requirements.

Include these RFQ inputs

Rated voltage, current and insulation requirementsEpoxy, integral tri-clamp or porcelain configurationTank-wall opening, flange or clamp and gasketTerminal, conductor, plating and orientationDrawing, photos, nameplate and dimensional constraintsQuantity, documents, packing, destination and schedule

Send low voltage bushing RFQ