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FZW28-12F Load Switch
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FZW28-12F Load Switch
1. Overload protection
2. Short circuit protection
3. Controlling
4. Used in residential building, non-residential building, energy source industry and infrastructure.
5. According to the type of instantaneous release classified as follows : type B(3-5)ln, type C(5-10)ln, type D(10-20)ln
2. Short circuit protection
3. Controlling
4. Used in residential building, non-residential building, energy source industry and infrastructure.
5. According to the type of instantaneous release classified as follows : type B(3-5)ln, type C(5-10)ln, type D(10-20)ln
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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.
Selection
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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