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IEC/TS 61400-4-1-ed.1.0
Wind energy generation systems - Part 4-1: Reliability assessment of drivetrain components in wind turbines
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STANDARD published on 18.2.2026
The information about the standard:
Designation standards: IEC/TS 61400-4-1-ed.1.0
Publication date standards: 18.2.2026
SKU: NS-1261665
The number of pages: 35
Approximate weight : 105 g (0.23 lbs)
Country: International technical standard
Category: Technical standards IEC
The category - similar standards:
Wind turbine systems and other alternative sources of energy
Annotation of standard text IEC/TS 61400-4-1-ed.1.0 :
IEC TS 61400-4-1:2026 specifies a method to calculate the design reliability of wind turbines gearboxes covered by IEC 61400-4, based upon failure modes where standardized calculation methods are publicly available. For the calculable failure mechanisms, it is possible to compare the reliability between different gearbox designs within the limitations of the theoretical models. The use of field-based statistical parameters can improve the accuracy of the calculated reliability. The calculated design reliability can provide information for the lifecycle management strategy. However, this document does not provide trade-off decisions between higher design reliability and maintenance strategies (e.g. preventive or predictive maintenance). This document does not consider repairable system analysis. Due to the lack of accepted theoretical models for some failure modes, the model can currently not predict the apparent failure probability in the field. Neither this document nor IEC 61400-4 specify a minimum value of design reliability.
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