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Summary of Contents for Leroy-Somer R438
- Page 1 Armature Field 10 Yello w 11 Red 12 Black Gr een X1 Z2 E+ E- 0V 110 220 Slow fuse 250V 8 A with LAM without LAM quency 50Hz 60Hz R 438 LAM 13 % R438 A.V.R. Installation and maintenance...
- Page 2 LEROY-SOMER Installation and maintenance 3971 en - 11.2006 / c R438 A.V.R. 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.
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Page 3: Table Of Contents
2.3 - LAM (Load Acceptance Module) characteristics ............6 2.4 - Typical effects of the LAM with a diesel engine with or without a LAM (U/F only)..7 2.5 - R438 A.V.R. options ....................7 3 - INSTALLATION - COMMISSIONING ................8 3.1 - Electrical checks on the AVR..................8 3.2 - Settings........................8... -
Page 4: Supply
(compound For both AREP & PMG excitation systems, characteristic: Booster effect). the alternator voltage regulator is the R438. The power supply voltage is rectified and With AREP excitation, the R438 electronic filtered before being used by the AVR... -
Page 5: Pmg Excitation System
(permanent magnet generator). This is the load. fitted at the rear of the machine and The AVR monitors and corrects the connected to the R438 AVR. alternator output voltage by adjusting the The PMG supplies the AVR with constant excitation current. -
Page 6: R438 A.v.r
LEROY-SOMER Installation and maintenance 3971 en - 11.2006 / c R438 A.V.R. Setting potentiometers 2 - R438 A.V.R. 2.1.2 - function 2.1 - Characteristics - Standard power supply: AREP or PMG. Delivrery Pot. Function position - Rated overload current: 8 A - 10 s - Electronic protection (overload, short- Quadrature droop ;... -
Page 7: Typical Effects Of The Lam With A Diesel Engine With Or Without A Lam (U/F Only)
- If the speed drops between 46 and 50 Hz, the rated voltage follows a fast gradient as it is restored. 2.5 - R438 A.V.R. options - If the speed drops below 46 Hz, since the engine needs more help, the voltage... -
Page 8: Installation - Commissioning
Voltage potentiometer P2 at minimum, machine should be made on the AVR. fully anti-clockwise. e) Stability potentiometer P3 to around 1/3 3.2.1 - R438 settings (AREP or PMG of the anti-clockwise limit. system) f) Start the engine and set its speed to a... - Page 9 LEROY-SOMER Installation and maintenance 3971 en - 11.2006 / c R438 A.V.R. the voltage between E+ and E- (approx. 3.2.2 - Max. excitation setting (excitation 10V D.C.). The best response times are ceiling) obtained at the limit of the instability. If no...
- Page 10 (400V - 10A) Diode Excitation circuit E+, E- must not be left open when the machine is running : Battery (B Volt) AVR damage will occur. 3.2.3.1 - R438 field weakening (SHUNT) Exciter field Forced excitation B Volt Time Applications...
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Page 11: Electrical Faults
LEROY-SOMER Installation and maintenance 3971 en - 11.2006 / c R438 A.V.R. 3.3 - Electrical faults Fault Action Effect Check/Cause The alternator builds up and its - Lack of residual magnetism voltage is still correct when the battery is removed. -
Page 12: Spare Parts
LEROY-SOMER Installation and maintenance 3971 en - 11.2006 / c R438 A.V.R. 4 - SPARE PARTS 4.1 - Designation Description Type Code A.V.R. R 438 AEM 110 RE 017 4.2 - Technical support service Our technical support service will be happy to provide any information you require. - Page 13 LEROY-SOMER Installation and maintenance 3971 en - 11.2006 / c R438 NOTES...
- Page 14 LEROY-SOMER Installation and maintenance 3971 en - 11.2006 / c R438 NOTES...
- Page 15 LEROY-SOMER Installation and maintenance 3971 en - 11.2006 / c R438 NOTES...
- Page 16 MOTEURS LEROY-SOMER 16015 ANGOULÊME CEDEX - FRANCE 338 567 258 RCS ANGOULÊME S.A. au capital de 62 779 000 € www.leroy-somer.com...
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