BS IEC 60034-17:1998
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Hardcopy , PDF
08-16-2002
English
04-15-1999
INTRODUCTION
1 Scope
2 Normative references
3 Characteristics of the motor
4 Frequency spectrum of voltage and/or currents
5 Additional losses
6 Torque derating during converter operation
7 Oscillating torques
8 Magnetically excited noise
9 Service life of the insulation system
10 Shelf voltages
11 Maximum safe operating speed
Figure 1 Waveform of phase current iphase in delta
connection for l-converter supply (idealized example)
Figure 2 Waveform of phase voltage uphase in delta
connection for U-converter supply with pulse
frequency fp = 15 x f1 (example)
Figure 3 Influence of converter supply on the losses of a
cage induction motor (frame size 315 M, design N)
with rated values of torque and speed
Figure 4 Fundamental voltage U1 as a function of operating
frequency f1 (see clause 6)
Figure 5 Torque derating factor for cage induction motors
of design N, IC 0141 (self-circulating cooling)
for l-converter supply as a function of operating
frequency f1 (example)
Figure 6 Limiting curve of admissible impulse voltage ULL
(including voltage reflection and damping) at the
motor terminals as a function of the rise time ta
Figure 7 Definition of the rise time ta of the voltage at the
motor terminals
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