Reference details
- Reference
- EN 21680-1:1991
- Official title
- Acoustics - Test code for the measurement of airborne noise emitted by rotating electrical machinery - Part 1: Engineering methods for free-field conditions over a reflecting plane (ISO 1680-1:1986)
- Organisation
- CEN
- Publisher status in source
- WithdrawnThis is the status recorded in the source, not a statement that this is the latest edition.
- Source access
- 19 October 2026
Research and application
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Product research routes
- Machinery and industrial production equipment
Risk assessment and verification for machines, integrated systems and production processes.
- Measurement, test and laboratory equipment
Measurement function, accuracy claims, electrical safety and the conditions under which results are comparable.
Questions for the evidence file
- Machine limits
- Hazard register
- Risk-reduction decisions
- Verification and validation records
- Measurement model
- Uncertainty budget
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Legal citation
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