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See Chinese contents: NB/T 31018-2011 NB/T 31018-2011: Wind turbine generator system technical specification of electric pitch system
This standard specifies the technical requirements, test methods, inspection rules, marking, labels, instruction manuals, packaging, transportation and storage of electric pitch systems for grid-connected wind turbines on the ground. This standard is applicable to the electric pitch system of grid-connected wind turbines on the ground, as the basis for the design, manufacture, testing and certification.
