Product Overview
GN22-12(C) Indoor High-voltage Disconnector is used in indoor installations of three-phase AC 50 Hz, rated voltage 12 kV, for connecting, breaking or transferring circuits of high-voltage equipment that is live but unloaded.
The GN22-12(C) indoor high-voltage disconnector has a rated current of 2000 A, a high-current rating, mainly used for isolating the power supply in high-voltage switchgear and complete distribution equipment of power plants, substations and industrial and mining enterprises.
Main Technical Parameters
| No. | Item | Unit | Value |
|---|---|---|---|
| 01 | Rated voltage | kV | 12 |
| 02 | Rated frequency | Hz | 50 |
| 03 | Rated current | A | 1600-2000 / 2500-3150 |
| 04 | Rated short-time withstand current | kA | 40 / 50 |
| 05 | Rated peak withstand current | kA | 100 / 125 |
| 06 | Rated short-circuit duration | s | 4 |
| 07 | Rated insulation level (1-min power-frequency withstand voltage / lightning impulse withstand voltage (peak)) | kV | between poles and pole to earth 42, across break 49 / between poles and pole to earth 75, across break 85 |
The main technical parameters of the GN22-12(C) indoor high-voltage disconnector are shown in the table above; the factory technical documents shall prevail.
Outline & Installation Dimensions
| Model | A | B | C | D | E |
|---|---|---|---|---|---|
| GN22-12/1600-2000 | 255 | 305 | 527 | 490 | 50 |
| GN22-12/2500-3150 | 262 | 325 | 538 | 494 | 60 |
| GN22-12C/1600-2000 | 537 | 255 | 305 | 807 | 50 |
| GN22-12C/2500-3150 | 539 | 667.5 | 330 | 880 | 60 |
Service Conditions
- Altitude not exceeding 1000 m;
- Ambient air temperature: -25℃ to +40℃;
- Relative humidity: daily average not more than 95%, monthly average not more than 90%;
- Seismic intensity not exceeding degree 8;
- Installation site: free from fire, flammable, explosive, heavily polluted, chemically corrosive and violently vibrating hazards.
Related Products
High-voltage disconnectors of the same series and other types available:
- GN19-12/630A 1250A indoor high-voltage disconnector
- GN24-12D/630 Indoor High-voltage Disconnector
- GN30-12/630 indoor high-voltage disconnector
- GN27-40.5/630A indoor high-voltage disconnector
- GW4-40.5/630A outdoor double-column horizontal-opening high-voltage disconnector
- GW5-40.5/630A outdoor double-column V-type high-voltage disconnector
- GW9-12/630A outdoor high-voltage disconnector
