Product Center

Three-Pole Load Break Switch SF6 LBS Pole Mounted Load Break Switch

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

Product Tags

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

image2

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

图片2

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

企业微信截图_16629530441273
图片3

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%

图片4

Dimensional drawing of 12kV SF6 load switch

图片5

Dimensional drawing of 36kV SF6 load switch

图片6

Single pole installation

>> Service conditions

Hydropower station                                                                                                                                                                             #1
Factory and mining enterprises                                                                                                                                                            #2
Ring network power supply                                                                                                                                                                  #3
Petrochemical Enterprises                                                                                                                                                                   #4

COMPANY INTRODUCTION

公司图片

  • Previous:
  • Next:

  • Write your message here and send it to us