Full Product Manual

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Appendix I
Definition of 50m/s survival wind speed of wind turbine
This Ramsond wind turbine is strict in accordance with following standards:
GB/T 10760.1 Generator of Off-grid Wind Turbine Generator System Part 1:Technology condition
GB/T 13981-2009 Design General Requirements for Small Wind Turbine Generator System
GB 17646 Safety of Small Wind Turbine Generator System
GB/T 19068.1 Off-grid Wind turbine Generator Systems Part 1:Technology condition
JB/T 10399-2004 Rotor Blades for Off-grid Wind Turbine Generator System
JB/T 10402.1-2004 Yaw System of Wind turbine Generator Systems Part 1:Technology condition
JB/T 10403-2004 Tower for Off-grid Wind Turbine Generator System
JB/T 10405
2004 Technical Condition for Foundation and Linkage of Off-grid Wind Turbine Generator System
NY/T 1137-2006 Installation Specification of Small Wind Turbine Generator System
Our wind turbine belongs to Class III in accordance with wind turbine international grade; please refer to folloing chart:
In order to be compatible with extreme load of international safety standard, while calculation of the load, the and all of wind speed which is
calculated by
should be reduced by 7%.
As we all know, the huge wind, storm or hurricane usually does not last for a long time, assuming a huge wind occurred once in 50 years, the average
maximum wind speed within 5 seconds at hub height is represented by
, it is calculated by multiply coefficient 1.4, that is =1.4