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Arc-Compressing Load Break Switch with Fuse-Yfn12-12rd/125-21.5

Basic Info

Model No.:  YFN12-12RD/125-21.5

Product Description

Model NO.: YFN12-12RD/125-21.5 Usage: Control Switch Number of Switch: Multi Control Switch Arc-Extinguishing Principle: Air-Compresing Type: Indoor High Voltage Trademark: YF Function: Industry, Circuit-Breaker Failure Protection Pole: 3 Certification: SGS, ISO9001, CE Test Equipment: IEC Standard Operation Model: Manual or Electric Operation Origin: Jiangyin Yunfeng, China Product Overview
YFN12(FN12)-12 series indoor AC HV load switch works under the air-compressing arc extinction principle. Because of its unique structural design, it can make full use of the air-compression extinguishing arc generated in the trippingprocess of switch. Its performance meeets the requirements of national standards GB 3804-2004 High-voltage alternating-current switches for rated voltage above 3.6kV and less than 40.5kV and GB 16926-2009 High-voltage alternating current switch-fuse combinations.It is applied in the HV AC 12kV network with the frequency of 50HZ for opening, closing the load current, overload current and making the short-circuit current. Together with the HV current-limiting fuse and trip device, it combines YFN12-12R series indoor AC HV load switch-fuse combination unit, which can reliably disconnect the rated short-circuit current.

Arc-Compressing Load Break Switch with Fuse-Yfn12-12rd/125-21.5        Arc-Compressing Load Break Switch with Fuse-Yfn12-12rd/125-21.5      

Model Specification
Arc-Compressing Load Break Switch with Fuse-Yfn12-12rd/125-21.5

Characteristics:
          ---small size
          ---light weight
          ---simple & reasonable structure
          ---small operating force
          ---reliable performance & convenient maintenance

Service Conditions
          1.Altitude≤1000m;
          2.Ambient temperature-25ºC-+ 40ºC;
          3.The daily average of relative humidity shall not be larger than 95% and the monthly average shall not be               larger than 90%:
          4.The ambient air shall not be subject to the obvious pollution such as corrosive or combustible gas and                   steam;
          5.The site without fire hazards and explosion hazards;
          6.The site that the seismic intensity does not exceed degree 8; the gradient shall not exceed 5°

Arc-Compressing Load Break Switch with Fuse-Yfn12-12rd/125-21.5          Arc-Compressing Load Break Switch with Fuse-Yfn12-12rd/125-21.5

Main Technical Parameters
Serial No. Item Unit YFN12-12R HV Load Switch-Fuse Combination Unit
1 Rated voltage KV 12
2 Rated frequency Hz 50
3 Rated current A Max.rated current of fuse equipped:125A
4 Rated short-circuit breaking current of fuse kA 31.5; 40; 50
5 Rated breaking-transfer(handover) current A 1700
6 Rated active load breaking current A 630
7 5% rated active load breaking current A 31.5
8 Rated closed loop breaking current A 630
9 Rated cable charging breaking current A 10
10 Rated short-time withstand current       ---Load switch kA/s 20/3
(thermal stability current)/duration        ---Earthing switch kA/s 16/2
11 Rated short-circuit making current kA 50
12 Rated peak withstand current(dynamic stability current) kA 50
13 1min power-frequency withstand voltage(effective value) to earth, phase-to-phase/isloating fracture kV/kV 42/48
14 Full-wave lightning impulse withstand voltage(peak)to earth,phase-to-phase/isolating fracture kV/kV 75/85
15 Main loop resistance μΩ ≤120
16 Mechnical life Time 2000
17 Three-phase opening and closing asynchronization ms ≤5
18 Inter-pole center distance mm 210±5
19 Distance between live parts and of phase to earth mm ≥140
20 Opening closing operation torque of load switch N·m ≤80
21 Opening closing operation torque of earth switch N·m ≤35
22 Rated closing operation voltage V ≌220/110
23 Rated opening operation voltage V ≌220/110
24 Time of switch opening triggered by breaking of fuse  ms 35±5
25 Impact output energy at breaking of fuse J(Joule) 1

   Arc-Compressing Load Break Switch with Fuse-Yfn12-12rd/125-21.5    




 

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