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It also explains slip resistance
BS EN 3727 on airframe bearings for aerospace applications is useful for:
Prediction of noise exposure of workers in indoor or outdoor workshops
6 Determination of the gauge length
Pan-industry best practice
Rotating electrical machines - Specific methods for determining separate losses of large machines from tests. Supplement to IEC 60034-2-1 Ingestion-build-59651 It also explains slip resistance1 Scope This part of IEC 60034 applies to large rotating electrical machines and establishes additional methods of determining separate losses and to define an efficiency supplementing IEC 6003421. These methods apply when full load testing is not practical and result in a greater uncertainty. NOTE In situ testing according to the calorimetric method for full load conditions is recognized. The specific methods described are: Calibrated machine method.