DD IEC/TS 60034-17:2006

INTRODUCTION
1 Scope
2 Normative references
3 Characteristics of the motor
4 Frequency spectrum of voltage and/or currents
5 Losses caused by harmonics
6 Torque derating during converter operation
7 Oscillating torques
8 Magnetically excited noise
9 Service life of the insulation system
10 Bearing currents
11 Installation (cabling, grounding, bonding)
12 Maximum safe operating speed
13 Power factor correction
Figures

Describes the steady-state operation of cage induction motors within the scope of IEC 60034-12, when fed from converters. It covers the operation over the whole speed setting range.

This technical specification deals with the steady-state operation of cage induction motors within the scope of IEC 60034-12, when fed from converters. It covers the operation over the whole speed setting range, but does not deal with starting or transient phenomena.

Only indirect type converters are dealt with. This type comprises converters with impressed direct current in the intermediate circuit (current source converters) and converters with impressed d.c. voltage (voltage source converters), either of the block type or the pulse controlled type, without restriction on pulse number, pulse width or switching frequency. For the purposes of this technical specification, a converter may include any type of electronic switching device, for example transistors (bipolar or MOSfet), IGBTs, thyristors, GTOthyristors, etc. with analog or digital control electronics.