Product Overview
The GW9-12/630A outdoor high-voltage disconnectoris used in 12 kV (Max. operating voltage 12 kV) single-phase AC 50 Hz distribution systems as a visible break point and safety isolation device during line and equipment maintenance. It is of single-break vertical-opening structure; the post insulator of each single-pole disconnector is mounted on its own base, mainly consisting of the base, post insulators, main conducting circuit and self-locking device. The blade structure opens and closes the circuit; each phase blade consists of two conductive blades with compression springs on both sides - adjusting the spring height gives the required contact pressure. The switch is operated with an insulating hook rod, and the blade carries a self-locking device.
Main Technical Parameters
| Item | Item sub-item | Unit | Value | |||
|---|---|---|---|---|---|---|
| Rated voltage | - | kV | 10 | 15 | ||
| Max. operating voltage | - | kV | 12 | 17.5 | ||
| Rated insulation level | 1-min power-frequency withstand voltage (r.m.s.) - to earth | kV | 40 | 40 | ||
| 1-min power-frequency withstand voltage (r.m.s.) - across break | kV | 47 | 47 | |||
| Lightning impulse withstand voltage (peak) - to earth | kV | 105 | 105 | |||
| Lightning impulse withstand voltage (peak) - across break | kV | 120 | 120 | |||
| Rated frequency | - | Hz | 50 | |||
| Rated current | - | A | 200 | 400 | 630 | 1250 |
| 4 s thermal current (r.m.s.) | - | kA | 6.3 | 12.5 | 20 | 31.5 |
| Dynamic current (peak) | - | kA | 16 | 31.5 | 50 | 80 |
| Creepage distance | - | mm | 300 | 380 | ||
| Mechanical life | - | operations | 2000 | |||
Outline & Installation Dimensions
GW9-10W disconnector product photo and installation dimensions diagram
Structure: 1 base, 2 post insulator, 3 terminal plate, 4 lock-hook assembly, 5 conductive plate. The GW9-12/630 outdoor high-voltage disconnector consists of the above base, post insulator, terminal plate and other parts, compact and easy to install.
Service Conditions
① Ambient temperature: upper limit +40℃, lower limit -30℃ (special order for frigid regions); ② Altitude: not exceeding 1000 m (above 1000 m the insulation level may be corrected per GB311.1); ③ Wind speed: not more than 35 m/s; ④ Ice thickness: not more than 10 mm; ⑤ Seismic intensity: not exceeding degree 8; ⑥ The site shall be free of flammable, explosive, heavy dust, chemical corrosion and violent vibration. The GW9-12/630A outdoor high-voltage disconnector maintains flexible operation and reliable isolation for a long time under the above normal service conditions.
Related Products
High-voltage disconnectors of the same series and other types available:
- GW9-12/630A outdoor high-voltage disconnector
- HGW9-12/630A outdoor high-voltage disconnector
- DCD-12/630A outdoor high-voltage disconnector
- DCD-15/630A outdoor 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
- GW13 series neutral-point outdoor high-voltage disconnector
