Wind turbine system and standards
UL has been working with manufacturers for some time to certify wind turbine components. This expanded service will enable manufacturers to apply for system certification which covers electrical and fire safety for the entire turbine.
UL's comprehensive wind turbine service will enable companies to serve the global energy market through a process that is designed to minimize the time and resources they must dedicate to project administration and management.
| Category code | UL Standards | IEC Standards |
| Large WTGS | UL Subject 6140, Outline of Investigation for Wind Turbine Generating System | IEC 61400-1, Design requirements IEC 61400-2, Design requirements IEC 61400-12-1, Power performance measurements of electricity producing wind turbines IEC 61400-13, Measurement of mechanical loads IEC 61400-14, Declaration of apparent sound power level and tonality values IEC 61400-21, Measurement and assessment of power quality characteristics of grid connected wind turbines IEC 61400-24, Lightning protection IEC 60204-1, Requirements for electric components |
| Large WT Assemblies (Structure only) | UL Subject 6140, Outline of Investigation for Wind Turbine Generating System | |
| Small & Micro WTGS | UL Subject 6140, Outline of Investigation for Wind Turbine Generating System | |
| WT Safety Related Control System equipment | UL Subject 6140, Outline of Investigation for Wind Turbine Generating System | |
| WT Inverters and Converters | UL Subject 6141, Outline of Investigation for Wind Turbine Converters and Interconnection Systems Equipment | |
| WTGS Components | Appendix A in UL subject 6140 |
| Component | UL Requirement |
| Wiring |
|
| Cable drip loop | Subject 6140 |
| Bus bars |
|
| Switchgear |
|
| Transformers |
|
| Hub/Spinner |
|
| Converter / Inverter |
|
| Lighting protection system |
|
| Slip rings | Subject 6140 |
| Gear box | Subject 6140 |
| Hoists & winches | UL 1340 |
| Fire alarms | UL 864, for the purpose of Property protection only |
| Emergency stop | Subject 6140 |
For more details, please contact us at wind@ul.com.
