Fn7-12D/630-20 Indoor Use Load Switch with Good Price

Model NO.: FN7-12D/630-20 Application: 3 Phase AC Power Stystem Certification: ISO9001,SGS, Ce Environment: Indoor High Voltage Origin: Jiangyin Yunfeng, China Type: Gas-Production High Voltage Arc-Extinguishing Principle: Arc Quenching Principle Test Equipment: IEC Standard 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  
Indoor AC HV load switch

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	YFN7-12 HV Load Switch
1	Rated voltage	kV	12
2	Rated frequency	HZ	50
3	Rated current	A	630
4	Rated short-circuit breaking current of fuse	kA	---
5	Rated breaking transfer current	A	---
6	Main loop resistance	μΩ	≤80
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	---
15	Time of switch opening triggered by breaking of fuse	ms	---

  


 

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Product Categories : 12kV Indoor HV load switch