New indoor high voltage isolation switch tool brake

New indoor high voltage isolation switch tool brake is mainly applicable to the voltage level of 12KV and below the high and low voltage distribution system, its three-phase AC is 50HZ,.

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General:

The indoor high voltage isolation switchgear produced by our company adopts advanced design technology and human operation mechanism at the distribution end, which has many advantages such as high performance, long service life and strong equipment stability.

Service Environment

  • The upper limit of ambient temperature +40ºC, the lower limit -l0ºC, Note: Allow storage and transportation at -25ºC

  • Altitude not more than 1000m

  • Relative humidity: daily average is not more than 95%, monthly average is not more than 90%

  • Water vapor pressure: the daily average is not more than 2.2 × 10-3Mpa, the monthly average is not more than 1.8 × 10-3Mpa

  • The surrounding air should be free from corrosive or combustible gases, water vapor and other obvious pollution.

  • No regular and violent vibration.

Key Feature

  • The indoor high-voltage isolation switch is a single-phase structure, and each phase is composed of a bottom frame, a pillar insulator, a knife, a contact and other parts.

  • The side of the knife is provided with a screw for adjusting the contact pressure and a spring for pressing, and the upper end is provided with a self-locking device for fixing the pull button and connecting it, which is used for opening and closing the insulated hook rod.

  • Compared with the unimproved products, the indoor high-voltage isolation switch has the advantages of large contact area, low contact resistance, good electrical conductivity and high mechanical strength

  • The isolation switch is generally installed in reverse mode, and can also be installed vertically or tilted (the moving contact is at the bottom). The base frame is fixed to the appropriate position on the cross arm with M-D bolts. It should be convenient to pull and close the knife with the Rek rod hook on the ground, and ensure that the base frame will not loosen during operation.

  • The incoming line should be connected to the static contact side, and the outgoing line should be connected to the moving contact side, and the appropriate distance between the three-phase switches should be maintained to avoid short circuit.

Technical Data



Name

Unit

Data

400A-12.5kA

630A-20kA

1000A-31.5kA

1250A-31.5kA

Rated voltage

kV

12

Rated current

kA

400

630

1000

1250

Rated short-time withstand current

s

12.5

20

31.5

31.5

Rated short-circuit duration


4

Rated peak withstand current

kA

31.5

50

80

80

Rated insulation level

Rated lighting impulse withstand voltage full wave peak

kV

Phase to phasephase to earth75

Open contact 85

1min power frequency withstand voltage

kV

Phase to phasephase to earth42

Open contact 48

Drawing

GN19.png


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