
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.

High-current RIP bushing option for generator and furnace transformers; verify model rating and interface.
Match the electrical duty and transformer or wall interface before requesting a design.
IEC 60137 applies to complete AC bushings; confirm edition and model-specific test evidence. Replacement fit requires drawing approval.
| Model | Rated voltage | Rated current | 1 min power-frequency withstand | Lightning impulse withstand | Cantilever / bending load | Weight |
|---|---|---|---|---|---|---|
| ETHD-40.5/16000 | 40.5 kV | 16000 A | 95 kV | 200 kV | 3150 N | 300 kg |
| ETHD-40.5/20000 | 40.5 kV | 20000 A | 95 kV | 200 kV | 3150 N | 294 kg |
| ETHD-40.5/25000 | 40.5 kV | 25000 A | 95 kV | 200 kV | 3150 N | 470 kg |
| ETHD-40.5/31500 | 40.5 kV | 31500 A | 95 kV | 200 kV | 3150 N | 724 kg |
Dimensions, interfaces and replacement compatibility require approved drawings and technical review.
High-current model option: confirm 40,000 A rating and temperature-rise evidence for the exact configuration.
Optimized Heat Dissipation: Proprietary hollow conductor geometry and turbulent air cooling channels.
Low Eddy-Current Losses: Non-magnetic stainless steel/aluminum flange prevents local overheating.
Conductivity > 100% IACS with low electrical resistance.
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Compare oil and dry-core construction, mounting, maintenance and model-specific IEC 60137 test evidence before choosing a transformer bushing.

Check oil and gas interfaces, sealing, wall penetration, insulation level and the applicable test plan against equipment drawings.

Review field grading, dimensions, impregnation, curing and model-specific dielectric tests when sourcing RIP condenser cores.