Changes for variable speed drives
Publishing efficiency information, based on Product Standard EN IEC 61800-9-2:
- Power losses of 8 operation points must be made available.
- Speed for operation points of lowest frequency may be chosen between 0 and 12 Hz (not all AC drives can make full torque at 0 rpm)
- Operating point “90;100” is used to define the CDM Efficiency Class (IE..).
- Efficiency Class & “power losses 90;100 in %” must be indicated on the variable speed drive.