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High-voltage disconnector for indoor installation type GN27-40.5
High-voltage indoor AC disconnect switch GN27-40.5 (hereinafter referred to as the disconnector) is a high-voltage electrical equipment for indoor installation of three-phase alternating current 50 Hz, two-column horizontal rotary type, designed to turn on and off high-voltage lines in the presence of voltage without load.
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Product Description
High-voltage indoor AC disconnect switch GN27-40.5 (hereinafter referred to as the disconnector) is a high-voltage electrical equipment for indoor installation of three-phase alternating current 50 Hz, two-column horizontal rotary type, designed to turn on and off high-voltage lines in the presence of voltage without load.
| No. | Parameter name | Unit change | Meaning | |
| 1 | Rated voltage | kV | 35 | |
| Maximum operating voltage | kV | 40.5 | ||
| 2 | Rated current | A | 630/100/1250/1600/2000/2500 | |
| 3 | Rated thermal current (rms value) | kA | 30/31.5/40/50 | |
| 4 | Thermal current duration | with | 4 | |
| 5 | Rated dynamic current (peak) | kA | 50/80/100/125 | |
| 6 | Power frequency test voltage for 1 min (rms value) | relative to the ground | kV | 95 |
| between the breaking gap | kV | 118 | ||
| 7 | Lightning impulse test voltage (peak) | relative to the ground | kV | 185 |
| between the breaking gap | kV | 215 | ||
| 8 | Grounding knife | rated thermal current (rms value) | kA | 20/31.5/40/50 |
| duration of thermal current | with | 4 | ||
| rated dynamic current (peak) | kA | 50/80/100/125 | ||
| 9 | Power frequency test voltage for 1 min (rms value) | longitudinal | N | 750 |
| transverse | N | 500 | ||
| 10 | Rated frequency | Hz | 50 | |
| 11 | Mass per pole | kg | ≈70 | |
| 12 | Creepage distance of support insulator | mm/kV | 25/31 | |
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