SOJO
SF6-free solid insulated switchgear (SVI-12/24). Ring main units for primary and secondary power distribution: 12kV (630A/1250A) and 24kV (630A). Vacuum switching sealed in epoxy resin (IP67), maintenance-free with a 30-year lifespan. Modular and extensible on both sides, with remote monitoring through DTU/RTU. Complies with IEC 62271-200.
Download datasheet (PDF, 567 KB)| Model | SOJO SVI-12/24 solid insulated switchgear / ring main unit (2nd generation), SF6-free |
|---|---|
| Rated voltage | 12 kV or 24 kV; rated frequency 50/60 Hz |
| Rated current | 630 A or 1250 A (12 kV); 630 A (24 kV) |
| Power-frequency withstand (1 min) | 48 kV (12 kV); 50 / 65 kV (24 kV) |
| Lightning impulse withstand | 85 kV (12 kV); 125 kV (24 kV) |
| Short-time withstand | 20 kA / 4 s or 25 kA / 4 s (12 kV); 20 kA / 4 s (24 kV) |
| Rated breaking current | 20 or 25 kA (12 kV); 16–20 kA (24 kV) |
| Short-circuit making current (peak) | 50 or 62.5 kA (12 kV); 40–50 kA (24 kV) |
| Insulation | solid epoxy resin with vacuum interrupters; live parts sealed IP67, fuse tube IP67, metal enclosure IP4X |
| Mechanical endurance | 10,000 operations; design life 30 years; maintenance-free |
| Dimensions, standard 3-way unit (L x W x H) | 1200 x 780 x 1430 mm (12 kV); 1200 x 800 x 1430 mm (24 kV) |
| Operating conditions | -50 to +70 °C; altitude up to 5500 m; humidity daily average ≤95%, monthly ≤90% |
| Protection and automation | WIC1 self-powered relay standard on circuit breaker units; remote control and monitoring via DTU/RTU |
| Standards | IEC 62271-200, IEC 62271-1, -100, -102, -103, -105, IEC 60529; GB 1984, GB 3906, GB 1985, GB 3804, GB/T 11022 |
From the manufacturer's datasheet. Ratings vary by model, so our engineers confirm the exact specification with your quotation.
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