10
2012.03 / e
LEROY-SOMER
Installation and maintenance
R 450
AVRs
4531 en -
One red LED:
- Lights up simultaneously with the green led
when the continuous operation threshold is
reached for more than 90 s and the excitation
current is reduced to the continuous
operation threshold. It is used to set the
excitation current ceiling
- Turns off when the excitation current is less
than the setting value (< 110% In)
- Flashes when the excitation current is
above the continuous operation threshold
during less than 90 s.
Green LED
stays on,
- flashes when the excitation current has
reached the ceiling in < 10s with PMG
excitation.
- ftays on if Iexc = I Shutdown.
WARNING
If the overload protection is activated, a
voltage drop possibly exceeding 10% of
the reference voltage will be observed.
The AVR does not provide undervoltage
protection. The customer will need to
make sure that their installation is
correctly protected against under-
voltages.
During load shedding, an overvoltage is
observed, which will disappear in a few
seconds.
P3
Diagram 2
9.5
I exc(A)
t(s)
(Maximum current I exc)
Activation of
90 s. tempo
Red led
Green led
90 s. tempo elapsed : application
of permanent limitation
2.9x I
threshold
(max. 9.5 A)
I
threshold
(1...5.5A)
Shutdown
0.5 ~ 0.7
270/297
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 ...