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33KV Load Break Switch Sf6 Motorized 400A 630A LBS

Short Description:

LRFW-12/24/36 pole-mounted load breaking switch is used to rated voltage 36KV, rated current 400/630A, 50/60 Hz power grid open circuit, load current in closed power system, overload current. This load switch can separate those broken distribution line automatically.


Product Detail

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General

The LRFW series outdoor SF6 load switch is a three-phase AC 50Hz /60Hz outdoor medium-voltage switchgear, which can break off and close the load current and overload current in the power system; The load switch is equipped with intelligent controller to realize the automation of distribution system.
Application voltage levels include 12kV, 24kV and 36kV.
Application standard: IEC62271-200.

Service and Installation Conditions

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2.1. Height above sea level: ≤3000m
2.2. Air temperature: -40℃~+50℃
Maximum diurnal temperature difference: ≤25 ℃
2.3. Relative humidity: Daily mean 95% monthly average 90%
2.4. Maximum wind speed: ≤34m/s
2.5. Earthquake intensity: <8 degree
2.6. Icing thickness: <10mm
2.7. Thickness of snow: <35mm
2.8. Irradiance: <0.1W/cm2
2.9. Pollution grade: Ⅲ class、Ⅳclass
2.10. Installation site: No fire disaster, explosion danger, chemical corrosion and frequent strenuous vibration places

Product structure

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1. Lift handle  

2. Carrying handle

3. Integrative rubber bushing

4. manual operation handle

5. Contact position indicator

6. Load switch support frame

7. Grounding device

8. Open closed locking device for load switch

9. High gas pressure relief explosion-proof device

10. Electric mechanism device 

Model and Definitions

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Technical parameters

Item

Unit

Data

Rated voltage

kV

12

24

36

Rated frequency

Hz

50/60

Rated current

A

400 / 630

Rated short-circuit withstand/breaking current 

kA

12.5

Rated short-circuit making current (peak)

kA

31.5

Rated peak withstand current

kA

31.5

Rated short-circuit time

Sec

1

Power Operating Time (Close/Open)

Sec

<2

Mechanical Operations

Times

5000

Rated full load operations

Times

400

Power frequency withstand voltage (1 min)

kV

28/32

50/60

70/80

Lightning impulse withstand voltage (peak)

kV

76/85

125/145

170/190

IP Level

 

65

Arc Extinction Medium

Times

SF6 Gas

Insulation Medium

 

SF6 Gas

SF6 gas year leak rate

 

≤0.5%

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Dimensional drawing of 12kV SF6 load switch

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Dimensional drawing of 36kV SF6 load switch

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Single Pole Installation

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