
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.

OIP wall bushing option for AC/DC wall penetrations; confirm rating and application by model.
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 | Total length | Creepage distance | Weight |
|---|---|---|---|---|---|
| CRW-800/250-3 | 800 kV | 250 A | 17000 mm | 31000 mm | 9200 kg |
| CRW-1000/250-3 | 1000 kV | 250 A | 17740 mm | 29200 mm | 9600 kg |
| CRWZ-1000(850)/250-3 | 1000 kV | 250 A | 17830 mm | 30000 mm | 9450 kg |
Dimensions, interfaces and replacement compatibility require approved drawings and technical review.
UHV Laboratory Benchmark: Operating in China top UHV power research and test laboratories.
Extreme High-Voltage Insulation: Up to 1000kV/1100kV withstand capacity with precision field grading.
Heavy Duty Mechanical Assembly: Total length up to 17.8 meters, tested under full seismic criteria.
Paper winding process; confirm moisture control and inspection records for the specified core.
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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.