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).
NORMA vydaná dňa 24.6.1996
Designation standards: UNE-EN 21680-1:1996
Note: NEPLATNÁ
Publication date standards: 24.6.1996
The number of pages: 30
Approximate weight : 90 g (0.20 lbs)
Country: Spanish technical standard
Kategória: Technické normy UNE