Document record · WIT-VC20
WIT-VC20 product manual (Chinese original)
Standards context: IEC 61400-1:2019 — design requirements for wind-turbine structural integrity, which is where a blade-to-tower clearance requirement originates; the permissible value belongs to the turbine's own design documentation. See also Helming et al., Wind Energy Science 8, 421 (2023) — an open-access study measuring tower–blade tip clearance on a 3.4 MW turbine by laser scanning, which reports a spread of roughly 1.5 m between minimum and maximum measured clearance under partial load. This is the published requirement the measurement serves. It is not a statement that this equipment is certified or approved to it; conformity for a project is established by the buyer's own procedure.
Evidence boundary
First-party specification; not independent validation. This first-party manual supports the translated specifications and workflow; it does not independently validate measurement performance or project-specific controller outcomes.
Document provenance
The source document is centrally managed by the supplier and drafted by its technology and R&D function.