FKW18-40.5OUTDOOR AC HIGH VOLTAGE LOAD SWITCHES
Product Overview
FKW18-40.5 outdoor AC high voltage load switch is a new type of load switch designed and manufactured by integrating domestic production experience of similar switches and foreign advanced technology.
The load switch is composed of isolation knife, arc extinguishing chamber and operating mechanism. Adopting the principle of gas generation and arc extinguishing, it has the advantages of simple structure, low maintenance workload, strong arc extinguishing ability, high fracture insulation level and high reliability, reaching the advanced level of similar products at home and abroad.
FKW18 series outdoor AC high voltage load switch is suitable for outdoor three-phase AC power distribution system with rated voltage of 140.5kV and rated frequency of 50Hz. It can open and close distribution lines with load, and can also be used as open and close no-load lines. The use of no -load transformer, in the opening position, can meet the safety distance requirements specified for the disconnecting switch.
Working Environment
1. Altitude: no more than 3000m;
2. Ambient air temperature: the upper limit is 40℃ , the lower limit is -25℃ , and the daily temperature difference does not exceed 32K;
3. The wind pressure does not exceed 700Pa (equivalent to wind speed 34m/s);
4. Air pollution degree: Allowed to be level IV;
5. The earthquake intensity does not exceed 8 degrees;
6.The thickness of icing shall not exceed 10mm
Main Technical Parameters
| No. | Item | Unit | Data | ||||
| 1 | Rated voltage | kV | 40.5 | ||||
| 2 | Rated current | A | 800 | ||||
| 3 | Rated frequency | Hz | 50 | ||||
| 4 | Rated peak withstand current | kA | 50 | ||||
| 5 | Rated short-time withstand current | kA | 20 | ||||
| 6 | Rated short-time withstand current duration | s | 4 | ||||
| 7 | Rated active load breaking current | A | 800 | ||||
| 8 | Rated closed-loop breaking current | A | 800 | ||||
| 9 | Rated cable charging current | A | 10 | ||||
| 10 | Rated active load breaking current | A | 31.5 | ||||
| 11 | No-load transformer current opening rated capacity | kVA | 1250 | ||||
| 12 | Rated short circuit switching current | kA | 50 | ||||
| 13 | Main circuit resistance | μΩ | ≤ 95 | ||||
| 14 | 1 min Power frequency withstand voltage (valid value) | Dry | Interphase，phase to earth | kV | 95 | ||
| isolating fracture | 15 | ||||||
| Wet | Interphase，phase to earth | kV | 85 | ||||
| 15 | Lightning impulse withstand voltage (peak) | Interphase，phase to earth | kV | 185 | |||
| isolating fracture | 215 | ||||||
| 16 | Mechanical life | Times | 2000 | ||||
| 17 | Different Periods of Three-phase Separation and Closing | ms | ≤ 15 | ||||
| 18 | Motor voltage, power | V | W | ≌ 220 | ≤ 200 | ||
| 19 | Deflection of blade rigid position | mm | ≤5 | ||||
| 20 | Main contact blade pressure | N | 420±42 | ||||
| 21 | Contact blade opening distance | mm | ≥ 360 | ||||
| 22 | Rated operating torque | N·m | ≤ 300 | ||||
Product dimensions
