distyly 3 phase outdoor HV AC isolation switch

Outdoor high-voltage AC isolation switch (hereinafter referred to as the "isolation switch"), for rated frequency 50 Hz outdoor high-voltage switchgear, for 1 0kV high-voltage lines in the case of voltage and no load to change. And the maintenance of high-voltage bus, circuit breaker and other electrical equipment and live high-voltage line for electrical isolation, can also be used for splitting small capacitive current and inductive current.The isolation switch complies with GB 1985-2014 "High voltage AC isolation switch and ground switch", DL/T 486-2010 "High voltage AC isolation switch and ground switch" and other technical standards.

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General:

Outdoor high-voltage AC isolation switch (hereinafter referred to as the "isolation switch"), for rated frequency 50 Hz outdoor high-voltage switchgear, for 1 0kV high-voltage lines in the case of voltage and no load to change. And the maintenance of high-voltage bus, circuit breaker and other electrical equipment and live high-voltage line for electrical isolation, can also be used for splitting small capacitive current and inductive current.

Service Environment


  • Altitude: not more than 1000m, if the altitude is higher than 1000m, the rated insulation level should be corrected accordingly;

  • Ambient temperature: upper limit +40℃, lower limit -40℃, the average temperature of the hottest month 30℃, the maximum daily temperature difference 25K;

  • Solar radiation intensity (outdoor) : 0.1W/cm2;

  • Wind speed/wind pressure (outdoor) : 34m/s (700Pa);

  • Pollution grade: e;

  • Ice thickness: ≤20mm;

  • Humidity: average daily relative humidity ≤95%, average monthly relative humidity ≤90%;

  • Earthquake resistance: horizontal acceleration 0.3m /s2, vertical acceleration 0.15m /s2;

  • Safety factor: sinusoidal resonance three cycles, safety factor above 1.67

  • Key Feature

  • Isolating switch with double column, contact into open type structure, has the ability of self cleaning contact, improve the contact reliability;

  • Finger made of new material with high strength, high conductivity, high elastic. Relying on the elastic contact finger clamping itself, to avoid the spring corrosion, contact clamping fever caused by annealing

  • Force to reduce the contact resistance increases, the contact heat intensified the vicious spiral.

  • The rotating part according to the design requirements of the isolating switch maintenance free. The rotating seat designed seal structure,moisture, dust and harmful gas can not enter, bearing, molybdenum disulfide lithium base grease will never work in

  • A good environment, bearing, never rust, grease can not be lost, never dry up, the isolation switch operating torque will increase after long term operation. Stainless steel shaft and oil-free self-lubricating bearing

  • With the structure of steel by hot dip galvanizing, ensure the isolation switch operation is flexible, portable and reliable, never rust.

Technical Data


Name

Unit

Data

Rated voltage

kV

12

Rated frequency

Hz

50

Rated current

A

630

1250

2000

2500

Rated short-time withstand current

kA

20/25

25/31.5

31.5

31.5/40

Rated short-time withstand currentpeak

kA

50/63

63/80

80

80/100

Rated short-time power frequency withstand voltage

kV/min

42/1phase to phaseto earth

48/1open contact

Rated lightning impulse withstand voltage

kV

75phase to phaseto earth

85open contact

Rated short-time withstand current duration

S

4disconnecting switch)、2earthing switch

Loop residence

μΩ

100

80

Outer insulation creep age distance

mm

372(Class e anti-fouling)

Mechanical life

Times

2000disconnecting switch/earthing switch

Drawing

GW4A-12 .jpg

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