| Product model specifications/items/parameters | GN30-12/400-12.5 | GN30-12/630-20 | GN30-12/1000-31.5 | GN30-12/1250-31.5 | |
| GN30-12D/400-12.5 | GN30-12D/630-20 | GN30-12D/1000-31.5 | GN30-12D/1250-31.5 | ||
| Rated voltage (kV) | 2 | ||||
| 400 | 630 | 1000 | 1250 | ||
| Thermal stability current (kA) | 12.5 | 20 | 31.5 | ||
| 4 | |||||
| Dynamic stability current (kA) | 31.5 | 50 | 80 | ||
| Rated insulation level | Lightning impulse voltage (kV) | Phase-to-phase, phase-to-ground 75, break 85 | |||
| 1min power frequency withstand voltage (kV) | Phase-to-phase, phase-to-ground 42, break 48 | ||||
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