By IEC TC/SC 88
Bargains with security features, caliber coverage, and engineering integrity and specifies requisites for the protection of small wind generators together with layout, set up, upkeep and operation lower than certain exterior stipulations. offers the correct point of safeguard opposed to harm from dangers from those structures in the course of their deliberate lifetime.
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Additional resources for Wind turbines – Part 2: Small wind turbines
Sample text
G. atmospheric or switching) by surge protective devices (SPD). In case of limited space within a SWT such equipment may be installed in separate cabinets outside of the SWT. The cabinets shall be suitable for the environmental conditions. 3 61400-2 IEC:2013 Disconnect device It shall be possible to disconnect a SWT electrical system from all electrical sources of energy as required for maintenance or testing. 3 of IEC 60204-1:2005. Where lighting or other electrical systems are necessary for safety during maintenance, auxiliary circuits shall be provided with their own disconnect devices, such that these circuits may remain energised while all other circuits are de-energised.
Table 6 – Partial safety factors for materials Fatigue strength, γ m Material characterisation Full characterisation 1,25 a Minimal characterisation 10,0 b a Factor is applied to the measured fatigue strength of the material. b Factor is applied to the measured ultimate strength of the material. 2 Ultimate strength, γ m 1,1 3,0 Partial safety factor for loads The partial safety factor accounts for the uncertainty in the load estimation process and thus is different for each load determination method.
U refers to the analysis of ultimate loads such as analysis of exceeding the maximum material strength, analysis of tip deflection, and stability analysis. 5) In these load cases, a wind turbine is running and connected to the electric load. The assumed wind turbine configuration shall take into account rotor imbalance. g. blade pitch and twist deviations) specified for manufacturing the rotor shall be used in the design calculations. In addition, deviations from theoretical optimum operating situations such as yaw misalignment and control system tracking errors shall be taken into account in the analyses of operational loads.