Hitachi Energy's high standard of quality control and advanced R&D processes ensure superior product quality.
The outstanding product design expertise with project emulation and highly experienced engineers enable a best-in-class gas-insulated line to customers worldwide.
GIL offers can be customized to project requirements related to temperature variations, ensuring proper foundations or solving vibration challenges due to multiple factors (e.g. transformer connection, cross-railway etc.)
| GIL up to 1100 kV | ||||||
|---|---|---|---|---|---|---|
| Rated voltage [kV] | 252 | 300 | 420 | 550 | 800 | 1100 |
| Rated current [A] | 3150 | 4000 | 4000 / 5000 | 4000 / 5000 / 6300 | 6300 | 6300 |
| Rated frequency [Hz] | 50 / 60 | 50 / 60 | 50 / 60 | 50 / 60 | 50 / 60 | 50 / 60 |
| Rated power-frequency withstand voltage [kV] | 460 | 460 | 650 | 740 | 960 | 1200 |
| Rated lightning impulse withstand voltage [kV] | 1050 | 1050 | 1425 | 1675 | 2100 | 2400 |
| Rated switching impulse withstand voltage [kV] | N/A | 850 | 1050 | 1300 | 1550 | 1980 |
| Rated short-time withstand current (3 s) [kA] | 50 | 63 | 63 | 63 | 63 | 63 |
| Rated peak withstand current [kA] | 135 | 171 | 171 | 171 | 171 | 171 |
| Encapsulation | single-phase | single-phase | single-phase | single-phase | single-phase | single-phase |
| Partial discharge [pC] | ≤5 | ≤5 | ≤5 | ≤5 | ≤5 | ≤5 |
| Rated filling pressure (20 °C, abs) [kPa] | 650 | 530 | 530 | 460 / 680 | 520 | 460 |
| Minimum functional pressure (20 °C, abs) [kPa] | 600 | 450 | 450 | 390 / 600 | 450 | 390 |
| Type tested SF6-gas leakage rate [%/year] | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| Ambient temperature [°C] | -30 … +40 | -30 … +40 | -30 … +40 | -30 … +40 | -30 … +40 | -30 … +40 |
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