Siemens Gamesa recently received a second rotor-nacelle assembly (RNA) IEC type certificate covering resistance to extreme wind conditions. Issued by TÜV NORD, the SG 11.0-200 DD offshore wind turbine joins the SG 8.0-167 DD offshore wind turbine with this certification.
Both Siemens Gamesa machines are thus able to withstand Typhoon- or T-class wind speeds as determined by the IEC reaching 57 meters per second for 10 minutes and three-second gusts of up to 79.8 meters per second. The SG 11.0-200 DD turbine has a rated capacity of 11 megawatts (MW) and a 200-meter diameter rotor using 97-meter long Siemens Gamesa B97 IntegralBlades. The SG 8.0-167 DD wind turbine has a rated capacity of 8 megawatts (MW) and a 167-meter diameter rotor with a 167-meter diameter, using 81-meter long Siemens Gamesa B81 IntegralBlades.