FZW28-12F Outdoor High-pressure Vacuum Load Switch
The FZW28-12F series outdoor vacuum load-break switch is designed for use in three-phase AC outdoor power distribution systems with a rated voltage of 12 kV and a rated frequency of 50 Hz. It serves to make and break load currents, as well as to close circuits under short-circuit conditions. It is suitable for applications in substations, industrial and mining enterprises, urban and rural power grids-including automated distribution networks-and locations requiring frequent switching operations.
As an operational control switch for overhead distribution lines, the FZW28-12F series offers several configurations. Its key advantages include an oil-free design, a simple mechanism, reliable performance, and minimal maintenance requirements, which have led to its widespread adoption. When integrated with devices such as an FDR-type fault detector or an RTU (Remote Terminal Unit), it forms a highly streamlined distribution automation system capable of automatically locating faults on overhead lines and isolating the faulty sections. This product plays a vital role in the ongoing modernization of my country's existing power distribution switchgear, facilitating the transition toward oil-free and automated distribution infrastructure.
Model and Meaning
Main Technical Parameters
| No. | Project | Unit | Data | ||
| 1 | Rated voltage | kV | 12 | ||
| 2 | Rated frequency | Hz | 50 | ||
| 3 | Rated insulation level | Lightning impulse withstand voltage | kV | 75/85(fracture) | |
| Lightning impulse withstand voltage(peak value) | dry test | 42/48(fracture) | |||
| wet test | 34 | ||||
| 4 | Rated current | A | 630 | ||
| 5 | Rated short time withstand current and duration | kA/2s | 16 | ||
| 6 | Rated peak withstand current | kA | 40 | ||
| 7 | Rated short circuit closing current | kA | 40 | ||
| 8 | Mechanical life | times | 10000 | ||
| 9 | Net weight | kg | 210 | ||
Normal operating conditions
Altitude: ≤ 2000 meters;
Environment temperature: -40℃ ~+85℃;
Relative humidity: ≤ 90% (25℃);
The maximum daily temperature difference: 25℃;
Protection grade: IP67;
The maximum ice thickness: 10mm.
Appearance and installation dimensions
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Contact us
For specifications, selection, quotations, or technical support of the FZW28-12F series outdoor vacuum load-break switch, please contact us:pannie@hdswitchgear.com.
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