6
2012.03 / e
LEROY-SOMER
Installation and maintenance
R 450
AVRs
4531 en -
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.
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).
PMG SYSTEM
PMG
T1
T2
T3
T4
T5
T6
Va
ris
to
r
5+
6-
14
14
15
15
16
16
T7
T8
T9
T10
T11
T12
according to voltage
Field
Armature
STATOR : 6 wires ( T1 to T6)
STATOR : 12 wires ( T1 to T12)
MAIN FIELD
R 450
VO
IR
N
O
TIC
E
SE
E N
O
TIC
E
VOL
T. ST
AB. I EXC
ST
AT.
FUSIBLES /
FUSES
1k
3P
H
.
S1
S2
50 Hz
60 Hz
EXT FREQ
SETTING
7
LAM
OFF
LAM
ON
ONL
Y FOR
SPECIAL
CONFIG.
KNEE
LAM OFF
65Hz
LAM
OFF
LAM
MODE 2
LAM
MODE 1
LAM
OFF
LAM
MODE 2
LAM
MODE 1
50Hz
EXT
.FREQ.
SET
.
60Hz
0
5
6
9
8
1
2
3
4
SERIES
LSA
49.1
/50.2
7000
/8000
SERIES
LSA
49.1
/50.2
7000
/8000
SERIES
LSA
46.2
/47.2
5000
/6000
SERIES
LSA
46.2
/47.2
5000
/6000
2
3
0
1
RAPIDE
FAST
RAPIDE
FAST
NORMAL
NORMAL
NORMAL
NORMAL
SHUNT / AREP
PMG
2
3
0
1
0
9
8
7
6
5
4 3 2 1
0
3
2
1
0
3
2
1
LEDS
US
C
Installation & maintenance manual :
www
.leroy-somer
.com
380V 220 110 0V E- E+ Z2 X1 Z1 X2
1 PHASE SENSING
3 PAHASES SENSING
266/297
Summary of Contents for R570U
Page 1: ...User and maintenance manual for generating sets R570U 33504081501NE_1_1 ...
Page 15: ...Alternator Cabinet Figure 1 3 Examples of identification plates 13 297 ...
Page 18: ...Sockets voltage 208 120V 16 297 ...
Page 125: ...9 Appendix 9 1 Appendix A Engine user and maintenance manual 123 297 ...
Page 126: ...124 297 ...
Page 128: ...126 297 ...
Page 129: ...OPERATOR S MANUAL Generating set and industrial engines 16 liter EMS 2 127 297 ...
Page 159: ...157 297 ...
Page 218: ...216 297 ...
Page 220: ...218 297 ...
Page 222: ...7748681 English 12 2011 220 297 ...
Page 223: ...9 2 Appendix B Alternator user and maintenance manual 221 297 ...
Page 224: ...222 297 ...
Page 226: ...224 297 ...
Page 250: ...www leroy somer com 248 297 ...
Page 261: ...Installation and maintenance R250 A V R 4067 en 2009 05 b LEROY SOMER 11 259 297 ...
Page 281: ...2012 03 e LEROY SOMER 19 Installation and maintenance R 450 AVRs 4531 en 279 297 ...
Page 282: ...www leroy somer com 280 297 ...