Delta Electronics ASDA-B Series User Manual page 270

1) Rated rotation speed: When full load, speed ratio is defined as the minimum
NOTE
2) When command is rated rotation speed, the speed fluctuation rate is defined as:
3) TN system: A power distribution system having one point directly earthed, the
4) Please refer to "Chart of load and operating time" in section 11.5 "Overload
Revision January 2009
speed (the motor will not pause).
(Empty load rotation speed – Full load rotation speed) / Rated rotation speed
exposed conductive parts of the installation being connected to that points by
protective earth conductor.
TT system: A power distribution system having one point directly earthed, the
exposed conductive parts of the installation being connected to earth independent
of the power system.
Characteristics".
Chapter 11 Specifications|ASDA-B Series
11-3