Product Overview
The GN19-12 indoor high-voltage disconnector is high-voltage switchgear used in power systems of rated voltage 12 kV, AC 50 Hz and below; it is fitted with a CS6-1 manual operating mechanism for opening and closing circuits that are live but unloaded. Derived products include anti-pollution type, plateau type and versions with a live-line display device. This series is fitted with CS6-1 manual mechanisms (models with panels have integral mechanisms). It is a three-pole type consisting of the base, shaft and levers, porcelain post insulators, blades and terminal plates. The shaft is mounted on the base with three welded levers, connected to the blades via pull-rod insulators. The shaft extends out of the base and any section can connect to the operating mechanism. Type C is wall-through: C1 means rotation on the wall-through side, C2 breaking on the wall-through side, C3 both sides wall-through. The GN19-12 indoor high-voltage disconnector is simple in structure and convenient to operate, and the type C wall-through version meets wall-through installation distribution schemes.
Product photo of the GN19-12 indoor high-voltage disconnector
Type Designation
| Code | Meaning |
|---|---|
| G | Disconnector |
| N | Indoor |
| 19 | Design No. |
| 12 | Rated voltage(kV) |
| (C) | Wall-through type (C1 rotation on the wall-through side / C2 breaking on the wall-through side / C3 both sides wall-through) |
| □-□ | Rated short-time withstand current (kA) / Rated current (A) |
Main Technical Parameters
Main technical parameters of the GN19-12 (original sample image)
| Item | Unit | Technical parameters | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Rated voltage | kV | 12 | |||||||
| 1-min power-frequency withstand voltage | To earth | 42 | |||||||
| Across break | 48 | ||||||||
| Lightning impulse withstand voltage (peak) | To earth | 75 | |||||||
| Across break | 85 | ||||||||
| Rated frequency | Hz | 50 | |||||||
| Rated current | A | 400 | 630 | 1000 | 1250 | ||||
| Rated short-time withstand current | kA | 16 | 20 | 16 | 20 | 25 | 20 | 25 | 31.5 |
| Rated peak withstand current | kA | 40 | 50 | 40 | 50 | 63 | 50 | 63 | 80 |
| Rated short-time withstand current duration main blade/earthing blade | s | 4/2 | |||||||
| Creepage distance | mm | 300~380 | |||||||
| Mechanical life | operations | 2000 | |||||||
Outline & Installation Dimensions
Structure: base, shaft and levers, porcelain post insulators, blades and terminal plates; the shaft extends out of the base to connect with the operating mechanism; type C is wall-through.
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.
The GN19-12 indoor HV disconnector uses a CS6-1 manual mechanism with simple and reliable opening/closing.
Related Products
High-voltage disconnectors of the same series and other types available:
- GN24-12D/630 Indoor High-voltage Disconnector
- GN30-12/630 indoor high-voltage disconnector
- GN22-12/2000A 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
