Xian Shuangzheng Electrical Technology Co., Ltd.
Main products:High Voltage Switchgear,Low Voltage Switchgear,Switchgear
Contact Us
  • Contact Person : Mr. wang chong
  • Company Name : Xian Shuangzheng Electrical Technology Co., Ltd.
  • Tel : 86-029-88605752
  • Fax : 86-029-88605752
  • Address : Shaanxi,Xi'an,zhangba East Road on the north side of golden holiday Huacheng phase 3- 10504.Xi'an High-tech Zone Industrial Park
  • Country/Region : China
  • Zip : 710061

SZ-FLN48-12D SF6 load switch

SZ-FLN48-12D SF6 load switch
Product Detailed
1.Economical and practical 2.Simple construction and easy operation 3.Reliable interlock 4.Easy installation

Normal use setting:

a) Environmental  temperature

Tmax : +40 centigrade   Tmin: -40 centigrade

Ambient humidity: Daily average relative humidity: ≤ 95%   Monthly average relative humidity: ≤ 90% 

Daily average vapor pressure: ≤ 2.2 × 10-3Mpa   Monthly average vapor pressure: ≤ 1.8 × 10-3Mpa  

Leakage rate per year: ≤  0.05%

b) altitude: ≤  2000m

c) Earthquake intensity:≤ 8 degree

d) The use place should be without drip , dewing ,inflammable and explosive danger,chemical corrosive gases and violent vibration.

Product standards:


Designation        UnitFLN48-12D/T630-20 Load Switch
Rated voltage        KV12   
Rated frequency        Hz50   
Rated current        A630   
1 min power frequency withstand voltage,relative,interphase/fracture  KV42/48   
Lightning impulse withstand voltage (peak)relatively,interphase/fracture KV75/85   
Rated power frequency withstand voltage under 5min zero gauge pressure  KV24   
Rated short-time withstand current for 3 seconds/2 seconds load switch/earthing switchKA20/20   
Rated dynamic current(peak) load switch/earthing switch   KA50/50   
Rated short-circuit making current   load switch/earthing switch  KA50/50   
Rated closed-loop dropout current      A630   
Rated active load dropout current      A630   
Rated cable-charging dropout current     A10   
Rated short-circuit dropout current     KA    
Rated transfer current       A    
Fuse type             
Fuse impact energy output       J    
Mechanical life load switch/earthing switch     times5000/2000  
Charged body and ground air insulating distance    mm≥125   
SF6 gas pressure(relative pressure at 20 centigrade)    bar0.4   
Switching synchronization status      ms≤2   
Main circuit resistance       µΩ≤65   

SZ-FLN48-12D SF6 load switch

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