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R250
A.V.R.
Installation and maintenance
MAIN FIELD
SHUNT SYSTEM
Induced
5+
6-
Field
F1
Slow fuse
250V 8 A
P1
Voltage
P2
Stability
ST4
Option
External potentiometrer
for voltage adjusting
STATOR : 12 wires (marking T1 to T12)
T1
T7
T2
T5
T4
T10
75 mm
R 250
110 0V
4 x holes Ø 5.8 x
50 x 115 mm
50Hz
KNEE
LAM
47.5Hz
o
OFF
9
LAM OFF
1
13%
0
SPECIAL
8
2
25%
Frequency selector 50 H
KNEE
3
OFF
65Hz
7
/ 60 Hz for U/F fonction
13%
4
LAM OFF
6
and LAM adjustement
KNEE
5
57Hz
25%
60Hz
LAM
LAM OFF
T8
T3
T11
T6
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Table of Contents
Summary of Contents for Rotek R250
- Page 1 50Hz KNEE 47.5Hz LAM OFF SPECIAL Frequency selector 50 H KNEE 65Hz / 60 Hz for U/F fonction Stability LAM OFF and LAM adjustement KNEE 57Hz 60Hz LAM OFF Option External potentiometrer for voltage adjusting R250 A.V.R. Installation and maintenance...
- Page 2 This manual concerns the alternator A.V.R. which you have just purchased. We wish to draw your attention to the contents of this maintenance manual. By following certain important points during installation, use and servicing of your A.V.R., you can look forward to many years of trouble-free operation. SAFETY MEASURES WARNING Before using your machine for the first time,...
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Page 3: Table Of Contents
The R250 is an IP00 product. It must be installed inside a unit so that this unit’s cover can provide IP20 minimum total protection (it must only be installed on LS alternators in the appropriate... -
Page 4: Supply
1 - SUPPLY The regulator controls the excitation current according to the alternator’s output voltage. 1.1 - SHUNT excitation system With a very simple conception, the SHUNT The SHUNT excitation alternator is auto- excitation alternator does not have a short excited with a R 250 voltage regulator. -
Page 5: R250 A.v.r
2 - R250 A.V.R. The threshhold position and LAM fonction settings are done with the jumper. 2.1 - Characteristics - Storage: -55°C; +85°C Operating at 50 Hz: (U/F gradient) - Operation: -40°C; +70°C - Voltage regulation: around ± 0,5 %. -
Page 6: R250 A.v.r. Option
2.3 - R250 A.V.R. option It is advised to use the “LAM” at 25% for load impacts > at 70% of the genset rated power. Potentiometer for voltage setting, 1000 W / 0,5 W min: setting range ± 5 %. -
Page 7: Typical Effects Of The Lam
2.5 - Typical effects of the LAM with a diesel engine or without a LAM (U/F only) 2.5.1 - Voltage Transient voltage drop (U/f) without LAM with Time 2.5.2 - Frequency Max speed drop with without Time 2.5.3 - Power Load variation Shedding due to "LAM"... -
Page 8: Installation - Commisioning
A.V.R. damage will occur. - Check that the position of the jumper corresponds to the operating frequency. 3.2.2.1 - R250 field weakening (SHUNT) - Check whether the ST4 jumper or the remote adjustment potentiometer have been connected. 3.2 - Settings The exciter is switched off by disconnecting the A.V.R. -
Page 9: Electrical Faults
3.3 - Electrical faults Fault Action Effect Check/cause The alternator starts up and its voltage is still correct when the - Lack of residual magnetism battery is removed. Connect a new battery The alternator starts up but its - Check the connection of the voltage No voltage at of 4 to 12 volts to voltage does not reach the rated...
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