AVR R250 4548c_en
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Transcript of AVR R250 4548c_en
1 - Description
R 250 A.V.R. FOR SHUNT ALTERNATORS
2 - Operation range
Operation mode : Standalone
3 - Main feature and characteristics- Voltage regulation : ± 0.5 %.- U/F function.- LAM function.- Quick response : 500 ms.- Nominal excitation current : 5A.- Maximum excitation current : 7A during 10 s.- Supply range / voltage detection : 85 to 139 V (50/60Hz).- Protection : fuse 8A.
LAM Function
R 250 A.V.R.
Ref : 4548en-2014.02/c Page 1
R 250 is an analog A.V.R. with power controled bytransistors.It is designed for small alternators with aSHUNT excitation.R 250 controls the excitation current in orderto maintain the output voltage of the alternator.R 250 is performant in terms of voltage regulation,simple to set , to use and is reliable.
It is in compliance with I.E.C. 60034-1 standardand U.L. 508 / C.S.A. approved.
0 1 s 2 s 3 s
LAM
0,9
0,8
fN
0 1 s 2 s 3 s
UN
0
0,9
0,8
(U/f)
1 s 2 s 3 s
100 %
50 Hz 60 Hz Hz
50 Hz
48 Hz
57 Hz60 Hz
Voltage
Knee
Knee
U/UN
Frequency
U/F function
Variation in the load
Lo
ad
on
th
e s
ha
ft (
kW
)
Load shedding due to LAM
Max. speed drop with LAM
without LAMwith LAM
Time Time Time
without LAM
Transient voltage drop
Shunt
AREP
PMG
LSA 40 42.3 44.3 46.2 47.2 49.1 50.2 51.2 53.1 54
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Ref : 4548en-2014.02/c Page 2
5 - Connexion and setting
Settings are done through the A.V.R.
- Potentiometer P1 : voltage setting.- Potentiometer P2 : stability setting.- Strap ST3 : frequency selection.- Jumper : frequency, U/F function, LAM function- Potentiometer ST4 : remote voltage setting.
R 250 A.V.R.
4 - Operation conditions- Operating temperature range : - 40° C à + 65° C.- Storage temperature range : - 55° C à + 85° C.- Hygrometry : 98%.- Maximum choc : 9 g on 3 axis.- Vibrations : less than 10 Hz , 2 mm peak magnitude. From 10 Hz to 100 Hz : 100 mm/s, below 100 Hz : 8g.
4 x holes Ø 5.8 x 50 x 115 mm
140
mm
75 mm
R 250
VO
LT
FRE
Q. &
L.A.M
. CO
NFIG
.
ST
AB
F1 Slow fuse 250V 8 A
P1 Voltage
P2
110 E+ E-0V
09
87 6 5 4
321
o1
2
3
56
7
9
8
4
60Hz
65Hz
57Hz
47.5Hz 50HzKNEE
SPECIAL
LAM
OFF
OFF
13%
13%
25%
25%
LAM
KNEE
KNEE
LAM OFF
LAM OFF
LAM OFF
External potentiometerfor voltage adjusting
ST4 Option
Frequency selector 50 Hz / 60 Hz , U/F functionand LAM functionStability