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GW □ -12 Outdoor high voltage disconnector

GW □-12 Outdoor high voltage disconnector is applicable to power system with frequency of 50Hz and rated voltage of 12kV. The switchgear is installed on the line of outdoor high-voltage distribution equipment for opening and closing the circuit when there is voltage and no load. The pollution flashover problem of anti pollution disconnector in operation. The switch has three pole linkage and good synchronization. It is equipped with an arc guiding device and a centering spring, which can realize rapid opening and closing. It has the advantages of opening and closing small inductance and capacitance current.
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Product overview

GW □-12 Outdoor high voltage disconnector is applicable to power system with frequency of 50Hz and rated voltage of 12kV. The switchgear is installed on the line of outdoor high-voltage distribution equipment for opening and closing the circuit when there is voltage and no load. The pollution flashover problem of anti pollution disconnector in operation. The switch has three pole linkage and good synchronization. It is equipped with an arc guiding device and a centering spring, which can realize rapid opening and closing. It has the advantages of opening and closing small inductance and capacitance current.

 

型号含义

G

W

12

1250

31.5

Isolating switch Outdoor installation site The design serial number is represented by numbers Rated voltage Rated current Rated short-time withstand current

 

Working conditions

◊ Altitude not exceeding 3000m;
◊ Ambient air temperature: - 30 ° C 〜 + 40 ° C;
◊ The wind pressure shall not exceed 700pa (equivalent to the wind speed of 34m / s);
◊ The icing thickness shall not be greater than 10mm;
◊ External insulation pollution level: III;
◊ Seismic fortification intensity: 8 degrees;
◊ The installation site shall be free from volatile violent vibration and the influence of flammable, explosive substances and chemical corrosive gases.

 

Working conditions

Project Company Parameter
Rated voltage

kV

12

Rated current

A

1250

Rated frequency

Hz

50

Rated short-circuit withstand current duration

s

4

Rated short-time withstand current (main circuit)

kA

31.5

Rated peak withstand current (main circuit)

kA

80

Rated short-time power frequency withstand voltage Dry test

kV

42

  Wet test

kV

34

Rated lightning impulse withstand voltage Dry test

kV

75

  Wet test

kV

/

Rated short-time power frequency withstand voltage (fracture) Dry test  

kV

  Wet test

kV

48

Rated lightning impulse withstand voltage (fracture) Dry test

kV

85

  Wet test

kV

/

Mechanical life Second

3000

Loop resistance  

≤100

 

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