11-33kV Outdoor Load Switch

  • FKW18-11kV Outdoor High Voltage Air Load Break Switch
  • FKW18-11kV Outdoor High Voltage Air Load Break Switch

FKW18-11kV Outdoor High Voltage Air Load Break Switch

This 11kv load break switch is a new type of load switch designed and manufactured by integrating the mature experience of domestic existing load switch production and foreign advanced technology. 

This 11kv load break switch is a new type of load switch designed and manufactured by integrating the mature experience of domestic existing load switch production and foreign advanced technology. The high voltage load break switch is composed of isolation knife, arc extinguishing chamber and operating mechanism. It adopts the principle of compressed gas generation and arc extinguishing, which has the advantages of simple structure, low maintenance, strong arc extinguishing ability, high fracture insulation level, and high reliability, reaching the level of similar foreign products. This switch is suitable for outdoor three -phase AC power distribution system with rated voltage below 12kV and rated frequency of 50Hz to suit the load current. In the open position, it can meet the isolation requirements specified for the disconnecting switch.

load disconnector

Working EnvironmentWorking Environment

1.The altitude does not exceed 3000 meters;
2. Ambient air temperature:upper limit +40°C , lower limit -40°C , daily temperature difference does not exceed 32K;
3. The wind pressure does not exceed 700Pa. (equivalent to the wind speed of 34m/s);
4. Air pollution degree:Class III according to Article 4.1 of GB5582;

5. The earthquake intensity does not exceed 8 degrees;
6. The thickness of the ice does not exceed 10mm

Main Technical Parameters

No.ItenUnlData
1Rated voltagekV12
2Rated currentA630
3Rated frequencyHz50
4Rated peak withstand currentkA50
5Rated short-time withstand currentkA20
6Rated short-time withstand current durationS4
7Rated active load breaking currentA630
8Rated closed-loop breaking currentA630
9Rated cable charging currenA10
10Rated active load breaking currenA31.5
11Rated short circuit switching currentkA50
12Main circuit resistanceμΩ95
131min(dry)Power frequency withstand voltageinterphase,to earthkV42
fracture48
141min(wet)Power frequency withstand voltagekV30
15Lightning impulse withstand volfageinterphase,to earthkV75
fracture85
16Mechanical lifeTimes2000
17Different Periods of Three-phase Closingms5
18Maximum operafing forque specifiedN.300

Product dimensions

Product dimensions
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