11-33kV Outdoor Load Switch

  • FKW18-33KV Outdoor High Voltage Air Load Break Switch
  • FKW18-33KV Outdoor High Voltage Air Load Break Switch
  • FKW18-33KV Outdoor High Voltage Air Load Break Switch
  • FKW18-33KV Outdoor High Voltage Air Load Break Switch

FKW18-33KV Outdoor High Voltage Air Load Break Switch

High voltage load air load break switch is a new type of load switch designed and manufactured by integrating domestic production experience of similar switches and foreign advanced technology. 

High voltage load air load break switch is a new type of load switch designed and manufactured by integrating domestic production experience of similar switches and foreign advanced technology. The outdoor load break switch is composed of isolation knife, arc extinguishing chamber and operating mechanism. Adopting the principle of gas gen eration 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.

air load break switch
delixi air load break switch

Working Environment

1.Altitude: no more than 3000m;
2. Ambient air temperature: the upper limit is 40°C, the lower limit is -25°C, 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

 N oltemUnitDala
1Rated voltagekV40.5
2Rated currenA800
3Raled frequencyHz50
4Rated peak withstand currentkA50
5Rated short-time withstand currentkA20
6Rated short-time withstand current durationS4
7Rated aclive load breaking currentA800
8Rated closed-loop breaking currentA800
9Rated cable charging currentA10
10Rated active load breaking currentA31.5
11No-load transformer current opening rated capacitykVA1250
12Rated short circuit switching currentkA50
13Main circuit resistanceμ  Ω≤95
141 min Power frequency
withstand voltage (valid value
DryInterphase,phase to earthkV95
isolating fracture15
WetInterphase,phase to earthkV85
15Lightning impulse withstand voltage (peak)Interphase,phase to earthkV185
isolating fracture215
16Mechanical lifeTimes2000
17Different Periods of Three-phase Separation and Closingms≤15
18Motor voltage,powerV  W220≤200
19Deflection of blade rigid positionmm≤5
20Main contact blade pressureN420±42
21Contact blade opening distancemm≥360
22Rated operating torqueN·m≤300

Product dimensions

Product dimensions
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