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FZW28-12F Load Switch
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FZW28-12F Load Switch
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FZW28-12F Load Switch
The FZW28-12 outdoor sectionalizer vacuumload switch is equipped withfault detection,protection,control and communication functions that can autonomously isolate single-phase grounding faults and automatically isolate phase-to-phase short-circuit faults.Itis suitable forthe incoming end oruser end of 10kV distribution lines and can alsobe used at otherbranching line connections that meetthe requirement
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Product Details
FZW28-12F Outdoor Vacuum Load Switch
The FZW28-12 outdoor sectionalizer vacuum load switch is equipped with fault detection, protection, control, and communication functions that can autonomously isolate single-phase grounding faults and automatically isolate phase-to-phase short-circuit faults. It is suitable for the incoming end or user end of 10kV distribution lines and can also be used at other branching line connections that meet the requirement.
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Operating conditions
1. Altitude: ≤ 2000 meters;
2. Environment temperature: -40℃ ~+85℃;
3. Relative humidity: ≤ 90% (25℃);
4. The maximum daily temperature difference: 25℃;
5. Protection grade: IP67;
6. The maximum ice thickness: 10mm.
| Technical data | ||
| The switch body | ||
| Rated voltage | kV | 12 |
| Power frequency insulation withstand voltage (Interphase and phase to ground / fracture) | kV | 42/48 |
| Lightning impulse withstand voltage (Interphase and phase to ground / fracture) | kV | 75/85 (peak) |
| Rated current | A | 630 |
| Rated short-time withstand current | kA | 20 |
| Rated thermal stability time | S | 2 |
| Rated short-circuit close current (peak) | kA | 40 |
| Rated dynamic stability current (peak) | kA | 40 |
| Rated cable charging breaking current | A | 20 |
| Rated switching unloaded transformer inductor current | A | ＜5 |
| Mechanical life | Times | 10000 |
| Measurement and control unit | ||
| Type | FDR-100 | |
| Input voltage | AC220±20% | |
| Input voltage frequency | Hz | 50 |
| The output voltage (opening operation) | DC48V | |
| Interphase short-circuit protection setting current value | 0.2-1.0 adjustable | |
| Grounding protection of zero sequence current setting value | 10-200mA adjustable | |
| Grounding protection action time setting value | 0-10s adjustable | |
| Setting value permitted error | ±5% | |
| Insulation resistance (external terminal to ground / input terminal to output terminal) | >100MΩ/DC500V | |
| Power frequency withstand voltage (ibid.) | 2000V/1min | |
| Impulse withstand voltage (ibid.) | 5000V, 1.2/50μs The positive and negative three times each | |
Overall and mounting dimensions(mm)
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