Technical GuideSeries 01 · OIP & RIP Bushings
OIP or RIP Transformer Bushing: What Should Buyers Check?
Compare oil and dry-core construction, mounting, maintenance and model-specific IEC 60137 test evidence before choosing a transformer bushing.
BRW / BRDW / BRLW11kV ～ 1100kV
Review model drawings and test evidence
OIP & RIP Bushings
OIP Condenser Transformer Bushing
OIP condenser transformer bushing series; confirm ratings and service requirements by model.
Rated Voltage11kV ～ 1100kV
Rated Current250A ～ 6300A (Normal) / Up to 40,000A (Heavy Current)
Insulation TypeOil-Impregnated Paper (OIP)
Catalog standardIEC 60137 / GB/T 4109 / IEEE C57.19.00
PD requirementConfirm by model
Test evidenceRequest with RFQ
Buyer requirement checklist
Match the electrical duty and transformer or wall interface before requesting a design.
- Rated voltage, current, AC/DC duty and insulation medium
- Flange, terminal, oil-side length and CT pocket drawing
- Creepage, altitude, pollution and mounting angle
- Existing nameplate and drawings for replacement review
IEC 60137 applies to complete AC bushings; confirm edition and model-specific test evidence. Replacement fit requires drawing approval.
Product Technical Overview
Oil-impregnated paper (OIP) condenser bushing for transformer applications. Confirm voltage and current ratings, oil-side dimensions, sealing, maintenance requirements and model-specific IEC 60137 test evidence.
EONOVA supplies high-voltage condenser bushings designed for electrical insulation and connection applications in power transformers and other high-voltage electrical equipment.
Featuring a condenser-type insulation structure, these bushings are designed to provide controlled electric field distribution and reliable insulation performance under high-voltage operating conditions. They are available in different structural configurations—including heavy-current (up to 40,000A), draw-lead, and current-carrying types—and can be customized to meet specific equipment requirements and customer drawings.
Key Features:
• Condenser-type insulation design for electric field control
• Designed for high-voltage and ultra-high-voltage (11kV-1100kV) insulation applications
• Robust construction with metal flanges and terminal connections
• Available in different dimensions and structural configurations
• Customized solutions based on customer drawings and technical specifications
// CUSTOM SOURCING & ENGINEERING SPECInquire Now
EONOVA provides sourcing solutions for condenser bushings based on customer specifications, equipment interfaces, and technical requirements. EONOVA – Your Sourcing Partner for High-Voltage Bushings from China.
Compatible Substation Apparatus
Grid Main TransformersUHV AC Substation TransformersRailway Traction TransformersHydroelectric & Thermal Power PlantsPower transformers (GSU, transmission & autotransformers)High-voltage electrical equipment & shunt reactorsSubstation equipment requiring condenser bushingsIndustrial heavy-current electric arc furnace (EAF) transformersUHV AC & DC transmission substation converter equipment and wall penetrations
OIP Condenser Transformer Bushing (BRW / BRDW / BRLW) Technical Specifications Table
Catalog document (PDF)
Check the document model and revision; final dimensions require approved drawings.
Showing 8 of 8 models
Catalog values are representative. Confirm the selected model, drawings and test evidence during inquiry.IEC 60137 applies to complete AC bushings; confirm edition and model-specific test evidence. Replacement fit requires drawing approval.
| Model | Type | Rated voltage | Rated current | Total length | Creepage distance | Weight |
|---|---|---|---|---|---|---|
| BRDW-72.5/630-4 | Draw Lead | 72.5 kV | 630 A | 1885 mm | 2248 mm | 85 kg |
| BRDW-126/630-4 | Draw Lead | 126 kV | 630 A | 2498 mm | 3906 mm | 155 kg |
| BRLW-145/1250-4 | Draw Lead | 145 kV | 1250 A | 3280 mm | 5270 mm | 340 kg |
| BRLW-252/1600-4 | Bottom Connected | 252 kV | 1600 A | 4780 mm | 8595 mm | 700 kg |
| BRLW-252/3150-4 | Bottom Connected | 252 kV | 3150 A | 4935 mm | 8595 mm | 800 kg |
| BRDLW-550/2500-4 | Bottom Connected | 550 kV | 2500 A | 8340 mm | 18755 mm | 1900 kg |
| BRLW-800/1600-4 | Bottom Connected | 800 kV | 1600 A | 12075 mm | 30528 mm | 4900 kg |
| BRLW-1100/3150-3 | Bottom Connected | 1100 kV | 3150 A | 13930 mm | 33000 mm | 7200 kg |
Further models from the OIP bushing typical-design catalogue (heavy-current, draw-lead, current-carrying, wall and DC types)
| Model | Rated voltage | Rated current | Structure | Length | Creepage distance | Weight | Drawing |
|---|---|---|---|---|---|---|---|
| BRW-40.5/16000 | 40.5 kV | 16,000 A (16 kA) | Heavy Current OIP | 1,133 mm | 1,256 mm | 250 kg | Typical Design Page 1 (Heavy Current) |
| BRW-40.5/20000 | 40.5 kV | 20,000 A (20 kA) | Heavy Current OIP | 1,245 mm | 1,418 mm | 275 kg | Typical Design Page 1 (Heavy Current) |
| BRW-40.5/25000 | 40.5 kV | 25,000 A (25 kA) | Heavy Current OIP | 1,100 mm | 1,510 mm | 500 kg | Typical Design Page 1 (Heavy Current) |
| BRDLW-72.5/630-4 | 72.5 kV | 630 A | Draw Lead Type | 1,885 mm | 2,248 mm | 85 kg | Typical Design Page 2 (Draw Lead 72.5~170kV) |
| BRDLW-126/1250-4 | 126 kV | 1,250 A | Draw Lead Type | 2,910 mm | 3,906 mm | 200 kg | Typical Design Page 2 (Draw Lead 72.5~170kV) |
| BRDLW-145/1250-4 | 145 kV | 1,250 A | Draw Lead Type | 3,280 mm | 5,270 mm | 340 kg | Typical Design Page 2 (Draw Lead 72.5~170kV) |
| BRDLW-170/1250-4 | 170 kV | 1,250 A | Draw Lead Type | 3,435 mm | 5,270 mm | 340 kg | Typical Design Page 2 (Draw Lead 72.5~170kV) |
| BRLW-72.5/3150-4 | 72.5 kV | 3,150 A | Current Carrying Type | 2,660 mm | 2,248 mm | 170 kg | Typical Design Page 3 (Carrying 72.5~170kV) |
| BRLW-126/2500-4 | 126 kV | 2,500 A | Current Carrying Type | 3,335 mm | 4,050 mm | 200 kg | Typical Design Page 3 (Carrying 72.5~170kV) |
| BRLW-145/4000-4 | 145 kV | 4,000 A | Current Carrying Type | 3,530 mm | 5,270 mm | 220 kg | Typical Design Page 3 (Carrying 72.5~170kV) |
| BRLW-170/6300-4 | 170 kV | 6,300 A | Current Carrying Type | 3,870 mm | 5,270 mm | 270 kg | Typical Design Page 3 (Carrying 72.5~170kV) |
| BRDLW-252/630-4 | 252 kV | 630 A | Draw Lead Type | 4,580 mm | 8,995 mm | 570 kg | Typical Design Page 4 (Draw Lead 252~550kV) |
| BRDLW-363/1250-4 | 363 kV | 1,250 A | Draw Lead Type | 6,535 mm | 11,255 mm | 980 kg | Typical Design Page 4 (Draw Lead 252~550kV) |
| BRDLW-550/1250-4 | 550 kV | 1,250 A | Draw Lead Type | 8,180 mm | 18,755 mm | 1,800 kg | Typical Design Page 4 (Draw Lead 252~550kV) |
| BRLW-252/3150-4 | 252 kV | 3,150 A | Current Carrying Type | 4,935 mm | 8,595 mm | 800 kg | Typical Design Page 5 (Carrying 252~550kV) |
| BRLW-363/2500-4 | 363 kV | 2,500 A | Current Carrying Type | 6,475 mm | 11,255 mm | 950 kg | Typical Design Page 5 (Carrying 252~550kV) |
| BRLW-550/2500-4 | 550 kV | 2,500 A | Current Carrying Type | 8,340 mm | 18,755 mm | 1,980 kg | Typical Design Page 5 (Carrying 252~550kV) |
| BRLW-800/1600-4 | 800 kV | 1,600 A | UHV Current Carrying | 12,075 mm | 30,528 mm | 4,900 kg | Typical Design Page 6 (UHV 800~1100kV) |
| BRLW-1100/3250-3 | 1,100 kV (1100kV) | 3,250 A | UHV Current Carrying | 15,150 mm | 52,000 mm | 7,200 kg | Typical Design Page 6 (UHV 800~1100kV) |
| CRW-800/250-3 | 800 kV | 250 A | UHV OIP Wall Bushing | 17,000 mm | 21,000 mm | 9,200 kg | Typical Design Page 7 (Wall Bushing 800~1000kV) |
| CRW-1000/250-3 | 1,000 kV (1000kV) | 250 A | UHV OIP Wall Bushing | 17,340 mm | 27,000 mm | 9,600 kg | Typical Design Page 7 (Wall Bushing 800~1000kV) |
| CRWZ-1000(850)/250-3 | 1,000 kV (1000kV) | 250 A | UHV OIP Wall Bushing | 17,830 mm | 27,000 mm | 9,450 kg | Typical Design Page 7 (Wall Bushing 800~1000kV) |
| ±800kV DC Wall Bushing | ±800 kV DC / 1000 kV AC | 3,150 A | Composite Oil-SF6 Wall Bushing | 18,450 mm | ≥ 32,000 mm | Customized | Typical Design Page 8 (±800kV DC Wall) |
Custom Engineering & Flange Dimensions Note:
Dimensions, interfaces and replacement compatibility require approved drawings and technical review.
OIP Condenser Transformer Bushing Core Engineering Advantages
60+ Years Grid Heritage
60+ Years Grid Heritage: Unrivaled longevity and proven field reliability across 100+ nations.
Class 10,000 Cleanroom Winding
Class 10,000 Cleanroom Winding: Temperature & humidity strictly controlled (GB 50472-2008).
Full UHV 1100kV Track Record
Full UHV 1100kV Track Record: 200+ units operating on 550kV DC and nearly 200 units on 800kV/1100kV UHV.
Extensive High-Speed Railway Supply
Extensive High-Speed Railway Supply: Over 2,000 bushings powering high-speed railway traction transformers.
Condenser-Type Field Control
Condenser-Type Field Control: Precision-wound capacitive cores control the radial and axial electric field distribution; field strength is verified against each model's design.
Ultra-Wide Voltage Coverage
Ultra-Wide Voltage Coverage: Complete product range covering 11kV distribution, 72.5kV~550kV main grid, and 800kV~1100kV UHV transmission.
Heavy Current Capacity up to 40kA
Heavy Current Capacity up to 40kA: Specialized heavy-current models engineered for large step-up transformers and industrial electric arc furnaces.
Metal flanges and seals require drawing review and model-specific oil-leakage acceptance.
Metal flanges and seals require drawing review and model-specific oil-leakage acceptance.
Ultra-Low Partial Discharge
Ultra-Low Partial Discharge: Partial discharge level strictly controlled ≤ 5 pC and dielectric loss factor tanδ ≤ 0.005.
Tailored Sourcing & Customization
Tailored Sourcing & Customization: Rapid customization of CT space lengths, lower oil-end dimensions, and terminals based on customer drawings.
Compatible Substation Apparatus
Grid Main TransformersUHV AC Substation TransformersRailway Traction TransformersHydroelectric & Thermal Power PlantsPower transformers (GSU, transmission & autotransformers)High-voltage electrical equipment & shunt reactorsSubstation equipment requiring condenser bushingsIndustrial heavy-current electric arc furnace (EAF) transformersUHV AC & DC transmission substation converter equipment and wall penetrations
OIP Condenser Transformer Bushing Materials & Manufacturing Process
High-Density Kraft Paper & De-gassed Mineral Oil
Ultra-pure transformer oil with moisture < 10 ppm, breakdown voltage > 70 kV/2.5mm.
High-Strength C130 Porcelain Jacket
Flawless glaze with exceptional mechanical strength and pollution flashover resistance.
Oil-Impregnated Kraft Paper Core
High-purity electrical kraft paper with aluminum foil capacitive screens, dried in high-vacuum autoclaves and impregnated with degassed transformer oil.
High-Grade Porcelain or Composite Outdoor Housing
Available with high-strength brown/gray glazed porcelain housing or lightweight composite HTV silicone rubber housing for severe pollution and seismic environments.
Precision CNC Cast Aluminum / Copper Flange & Terminals
Pressure-tight cast aluminum alloy mounting flanges with CNC machined sealing grooves; high-conductivity copper terminal boards with silver plating.
Engineering Inquiry Draft
Request Quotation for OIP Condenser Transformer Bushing
Enter your requirements and send them to our sales desk. If online sending is unavailable, you get an email draft instead.
OIP Condenser Transformer Bushing: FAQ
- What voltage and current range does the OIP Condenser Transformer Bushing cover?
- Catalogue voltage range: 11kV ～ 1100kV; current range: 250A ～ 6300A (Normal) / Up to 40,000A (Heavy Current). Confirm the rating of the specific model and drawing.
- What insulation or construction is used?
- Oil-Impregnated Paper (OIP).
- Which standards are referenced?
- Catalogue standard reference: IEC 60137 / GB/T 4109 / IEEE C57.19.00. Request type-test evidence for the specific model.
- Which applications is it used in?
- Power Transformers & Shunt Reactors; Railway Traction Power Supply.
- Is a product catalogue available?
- Yes. OIP BUSHING Typical Design.pdf can be downloaded from this page.
ENGINEERING WHITEPAPERS & IEC GUIDES
View All 10 WhitepapersRelated Technical Selection & Standard Guides
Standard InsightsSeries 01 & 06 · Bushing Standards
IEC 60137 for Buyers: Scope, Tests and Reports
Use IEC 60137 for applicable complete AC bushings; confirm the edition, rating, type and routine tests, and report identifiers for the offered model.
Project NewsUHV Flagship Engineering
UHV Bushing Selection: Field Grading, Moisture and Altitude
Identify voltage duty, field grading, moisture control, external insulation and altitude corrections in the project specification.
COMPLEMENTARY SERIES
View All 7 Series
