3 SYNCHRONOUS MOTOR APPLICATIONS
GE Multilin
Courtesy of store.ips.us
200
150
100
80
60
50
40
30
25
20
15
10
8
Line
6
Voltage
5
50%
4
3
65%
2
80%
1.5
90%
100%
1
10
20
30
Figure 3–9: PROTECTION FOR REDUCED VOLTAGE STARTS
SPM Synchronous Motor Protection and Control
3.2 COLLECTOR-RING MOTORS
40
50
60
70
80
% Synchronous Speed
90 100
701760A7.CDR
3
3-
9