
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.

Composite silicone sheathed oil-SF6 wall bushing for UHVDC converter station valve halls.
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.
| Parameter | Value |
|---|---|
| Rated DC Voltage | ±800 kV DC (1000kV Class) |
| Rated Current | 3150 A (Indoor <= 50℃ / Outdoor <= 40℃) |
| Lightning Impulse Withstand | 2400 kV |
| Switching Impulse Withstand | 2000 kV (Dry & Wet) |
| 1h Power Frequency + PD 1h+ | 1025 kV, PD <= 10 pC |
| 2h Power Frequency + PD 2h+ | 1350 kV, PD <= 10 pC |
| Polarity Reversal Withstand | ±1005 kV, PD <= 10 pC |
| Minimum Creepage | >= 32000 mm |
| Bending Load | 5000 N |
Dimensions, interfaces and replacement compatibility require approved drawings and technical review.
Valve Hall Wall Integration: Seamless sealed interface connecting converter valve hall and outdoor yard.
Composite housing may reduce porcelain-fragment hazards; verify mechanical and pressure tests.
Extreme High-Voltage DC Endurance: Lightning impulse withstand 2400kV, switching impulse 2000kV.
High-dielectric oil-paper core enclosed in puncture-resistant composite housing.
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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.