Pmg Excitation System - SDMO R 340 U User And Maintenance Manual

LEROY-SOMER

2.2 - PMG excitation system

With PMG excitation, a permanent magnet
generator (PMG) added to the alternator
supplies the AVR with voltage which is
independent of the main alternator winding.
This system provides the machine with a
short-circuit current capacity of 3 IN for 10 s.
PMG
16
15
14
6
Installation and maintenance
PMG SYSTEM
Armature
Field
5+
6-
R 450
380V 220 110 0V
according to voltage
R 450
AVRs
The AVR monitors the alternator output
voltage by adjusting the excitation current.
The rotating switch should be in the PMG
position (see 3.2.3).
MAIN FIELD
50 Hz EXT FREQ
60 Hz SETTING
E- E+ Z2 X1 Z1 X2
C
16
15
14
254/285
4531 en - 2012.03 / e
STATOR : 6 wires ( T1 to T6)
STATOR : 12 wires ( T1 to T12)
T1 T7 T2 T8 T3
T5 T11
T6
T4 T10
US
T9
T12