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The GN30-12 indoor rotary high-voltage isolation switch is a rotary contact knife type isolation switch. Its main structure is to fix two sets of insulators and contacts on the upper and lower planes of the three-phase common chassis. By rotating the contact knife, the switch can be opened and closed.
The GN30-12D indoor rotary high-voltage isolation switch is an additional form with a knife on top of the GN30-12 indoor rotary high-voltage isolation switch, which can meet the needs of different power systems. This product has a compact design, small footprint, strong insulation capacity, and is easy to install and adjust. Its performance meets the requirements of GB1985-89 "AC High Voltage Isolation and Grounding Switches", and is suitable for indoor systems with a rated voltage of 10 kV AC 50Hz or below. It is used for opening and closing circuits under voltage and no load conditions. It can be used together with high-voltage switchgear or separately.
| 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/400-12.5GN30-12D/630-20 | GN30-12D/1000-31.5 | GN30-12D/1250-31.5 | ||
| Rated voltage(KV) | 12 | |||
| Current rating(A) | 400 | 630 | 1000 | 1250 |
| Thermally stable current for 4 seconds(KA) | 12.5 | 20 | 31.5 | |
| Thermal settling time(S) | 4 | |||
| Dynamic stabilization current(KA) | 31.5 | 50 | 80 | |
| Rated insulation level lightning impulse voltage(KV) | Interphase, interphase 75, break 85 interphase | |||
| Rated insulation level: 1min power frequency withstand voltage(KV) | phase 42, fracture 48 | |||
