Supply with Load Break Switch with Fuse Combination-Fn7-12rd

Model NO.: FN7-12R(T)D Structure: Three-Phase AC Power System Pole: 3 Certification: SGS, ISO9001, CE Application: Making Short-Circuit Current Origin: Jiangyin Yunfeng, China Function: Industry Usage: Breaking Load Current Number of Switch: Multi Control Switch Type: Gas-Production High Voltage Trademark: YF Product Overview
YFN7(FN7)-12 series indoor AC HV load switch is a gas-production HV load switch and fuse combination unit with arc quenching principle.It is applied in three-phase AC 50Hz power system with rated voltage 12kV for breaking the load current and making the short-circuit current.The fuse combination unit can break the short-circuit current and has the function of single-phase fuse three-phase tripping and breaking.It is the ideal selection for protecting the line, equipment and transformer. Its performance meets 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.

Model Specification

Note: The sensor with live display can be used for the Switch Insulator
                   

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°

Main Technical Parameters

Serial No.	Item	Unit	YFN7-12R(T)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
5	Rated breaking transfer current	A	1000
6	Main loop resistance	μΩ	≤120
7	Rated active load breaking current	A	630
8	Rated short-time withstand current(thermal stability current)/duration	kA/s	20/4
9	Rated short-time withstand current(thermal stability current)/duration of Earthing Switch	kA/s	16/2
10	Rated peak withstand current(dynamic current)	kA	50
11	1 min power-frequency withstand voltage(effective value)to earth,phase-to-phase/isolating fracture	kV/kV	42/48
12	Full-wave lightning impluse withstand voltage(peak) to earth,phase-to-phase/isolating fracture	kV/kV	75/85
13	Mechanical life	Time	2000
14	Rated opening operation voltage	V	≌220/110
15	Time of switch opening triggered by breaking of fuse	ms	35±5

 

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Product Categories : HV Load Break Switch With Fuse