Outdoor HV isolation vacuum load switch 12kv

Each technical performance index outdoor high voltage isolating vacuum load switch completely reachedGB3804 and IEC standards. It is suitable for power supply network with rated voltage of 12kV, rated current of 630A and 3-phase AC 50Hz and used for closing and opening load current.

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General:

The load switch is suitable for the rated voltage 12kV, rated current 630A, three-phase AC 50Hz power supply network, with load to break and close the distribution line, can also be used as to break and close the no-load line, no-load transformer, in the opening position, can meet the isolation switch of the isolation power requirements. The load switch can be used for power, metallurgy, mining, chemical and other departments of the transmission and distribution system as a control circuit, but also suitable for frequent operation places.

Service Environment

  • Ambient temperature:+40℃~-30℃;

  • Altitude above sea level not exceed 2000m;

  • Relative humidity : Daily average value not exceed 95%,Monthly average value not exceed 90%;

  • No frequent extreme vibration.

Key Feature

  • Using vacuum arc extinguishing chamber, no explosion danger, no maintenance.

  • The isolation knife is connected with the three-phase vacuum interrupter, and the isolation fracture is visible when the brake is opened.

  • All parts of the body are made of stainless steel, and the bottom frame is made of carbon steel with hot dip galvanized plus ultraviolet protection coating to ensure the normal operation of the body in outdoor environment.

  • The installation mode is mainly single-pole operation, which can be operated manually, electrically or remotely.

  • Widely used in rural power grid, urban network, railway and other configuration line transformation.

  • Large breaking capacity, safe and reliable, long electrical life, frequent operation.

Technical Data 


Name

Unit

Data

Rated voltage

kV

12

Rated frequency

Hz

50

Rated current

A

630

Rated active load breaking current

A

630

Rated loop breaking current

A

630

5%Rated active load breaking current

A

31.5

Rated cable charging breaking current

A

10

Rated no load transformer breaking capacity

kVA

1600

Rated breaking capacitor bank current

A

100

P.t withstand voltage for 1min: Across vacuum open contacts.

between phases, phase to earth /across open contacts

kV

42/48

Lightning impulse withstand voltage : between phasesphase to earth /across open contacts

kV

75/85

Rated short time withstand current

kA

20

Rated short circuit duration

s

4

Rated peak withstand current

kA

50

Rated short circuit making current

kA

50

Mechanical endurance

Time

10000

Allowable wear thickNess of contact of vacuum interrupter

mm

0.5

Operating torque

Nm

200

Drawing

FZW32-12 Voltage Isolating Load Switch.png

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