Outdoor AC high-voltage load switch

Outdoor live tank AC high-voltage load switch is a three-phase outdoor high-voltage equipment with rated voltage of 12KV and rated frequency of 50Hz.

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General:

The live tank is used to divide the load current and close the short-circuit current in urban and rural overhead distribution network, and can also break the no-load current of the transformer and the cable charging current at a certain distance.

Service Environment

  • Ambient air temperature: -40℃ ~ +50℃;

  • Altitude: no more than 3000m;

  • The surrounding air can be polluted by dust, smoke, corrosive gas, steam or salt spray, pollution grade: Ⅳ;

  • The wind speed does not exceed 34m/s (equivalent to 700Pa on the surface of the cylinder);

  • Vibration or ground movement from outside switchgear and control equipment is negligible;

  • The amplitude of electromagnetic interference induced in the secondary system does not exceed 1.10kV.

Key Feature

  • SF6 (purity 99.99%) as a breaking and insulating medium.

  • Stainless steel shell, fully enclosed by argon arc welding, with good anti-corrosion properties and sealing properties.

  • Use low energy storage motors.

  • It can be used under various external conditions.

  • Light weight and easy to handle.

  • Truly maintenance-free.

  • When the gas pressure is reduced to 0.03 ~ 0.07MPa, the switch can automatically lock.

  • High strength insulation performance.

  • Equipped with explosion-proof safety devices

Technical Data


Name

Unit

Data

Rated voltage

KV

12

6/12/17.5

Rated frequency

Hz

50/60

Lightning impulse withstand voltage

KV

110

Power frequency withstand voltage 1min

Dry

KV

50

wet

40

Rated current

A

400/630

Peak withstand current

KA

50

Rated short time making current

KA

20

Rated short time withstand current

KA/S

4/20

Rated cable charging breaking current

A

10

Rated line charging breaking current

A

1

Rated closed-loop breaking current

A

400/630

Rated current breaking times

Times

400

Rated working pressure

Mpa

0.05

Per-phase main circuit resistance

μΩ

80

Relative gas leakage rate

Year

1%

Operation of mechanical stability

Times

6000

weight

kg

115

Institutions boxes and controller protection class

IP67

Drawing

FLW34-12.png



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