Leroy-Somer R438 Installation And Maintenance Manual
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Leroy-Somer R438 Installation And Maintenance Manual

Leroy-Somer R438 Installation And Maintenance Manual

A.v.r. automatic voltage regulator
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1-888-POWER-58
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5+
F1
ST5
50Hz
ST10
LAM
R438
13 %
P5
ST11
A.V.R.
ST2
P3
Installation and maintenance
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6-
X2
Z1
X1 Z2 E+ E- 0V 110 220 380
60Hz
R 438
25 %
ST1
3971 en -
2010.11 / f
T7
T1
T2
T8
T5
T11
T4
T10
140 mm
P1
ST9
AREP
PMG
PMG
T.I.
P2
S2
Ph.1
S1
P1
ST4
P2
R731
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Summary of Contents for Leroy-Somer R438

  • Page 1 3971 en - 2010.11 / f 140 mm X1 Z2 E+ E- 0V 110 220 380 AREP 60Hz 50Hz R 438 ST10 T.I. R438 13 % 25 % Ph.1 ST11 A.V.R. R731 Installation and maintenance CALL US TODAY CALL US TODAY...
  • Page 2 This A.V.R. can be incorporated in a ma- chine marked C.E. Warning symbol for electrical danger to personnel. Note: LEROY-SOMER reserves the right to modify the characteristics of its products at any time in order to incorporate the latest tech- nological developments. The information contained in this document may therefore be changed without notice.

  • Page 3: Table Of Contents

    The R438 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 ap- propriate location so that when viewed externally, it has a higher degree of protection than IP20).

  • Page 4: Supply

    (compound charac- For both AREP & PMG excitation systems, teristic: 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 moni- AVR is powered by two auxiliary windings toring transistor.

  • Page 5: Pmg Excitation System

    (permanent magnet generator). This is fitted the load. at the rear of the machine and connected to The AVR monitors and corrects the alterna- the R438 AVR. tor output voltage by adjusting the excitation The PMG supplies the AVR with constant current.

  • Page 6: R438 A.v.r

    Installation and maintenance LEROY-SOMER 3971 en - 2010.11 / f R438 A.V.R. 2 - R438 A.V.R. Setting potentiometers 2.1.2 - function 2.1 - Characteristics - Storage : -55°C ; +85°C Delivrery Pot. Function - Operation : -40°C ; +70°C position - Standard power supply: AREP or PMG.

  • Page 7: Typical Effects Of The Lam With A Diesel Engine With Or Without A Lam (U/F Only)

    Installation and maintenance LEROY-SOMER 3971 en - 2010.11 / f R438 A.V.R. 2.4 - Typical effects of the LAM with - LAM : action eliminated by cutting the ST5 jumper. a diesel engine with or without a LAM (U/F only)

  • Page 8: R438 A.v.r. Options

    LEROY-SOMER 3971 en - 2010.11 / f R438 A.V.R. 2.5 - R438 A.V.R. options - Current transformer for parallel operation of ../1A. 5 VA CL 1. - Remote voltage adjustment potentiometer: 470 Ω, 0.5 W min: adjustment range ± 5% (range limited by internal voltage potentio- meter P2).

  • Page 9: Installation - Commissioning

    AVR. e) Stability potentiometer P3 to around 1/3 of the anti-clockwise limit. 3.2.1 - R438 settings (AREP or PMG f) Start the engine and set its speed to a fre- system) quency of 48 Hz for 50 Hz, or 58 for 60 Hz.
  • Page 10 Installation and maintenance LEROY-SOMER 3971 en - 2010.11 / f R438 A.V.R. The best response times are obtained at the 3.2.2 - Max. excitation setting (excitation limit of the instability. If no stable position ceiling) can be obtained, try disconnecting or repla- Depending on cing the ST2 jumper (normal/fast).
  • Page 11 (400V - 10A) Diode Excitation circuit E+, E- must not be left open when the machine is running : AVR Battery (B Volt) damage will occur. 3.2.3.1 - R438 field weakening (SHUNT) Exciter field Forced excitation B Volt Time Applications...

  • Page 12: Electrical Faults

    Installation and maintenance LEROY-SOMER 3971 en - 2010.11 / f R438 A.V.R. 3.3 - Electrical faults Fault Action Effect Check/Cause The alternator builds up and its voltage is still correct when the - Lack of residual magnetism battery is removed.

  • Page 13: Spare Parts

    Installation and maintenance LEROY-SOMER 3971 en - 2010.11 / f 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 14 Installation and maintenance LEROY-SOMER 3971 en - 2010.11 / f R438 NOTES CALL US TODAY CALL US TODAY REQUEST A QUOTE REQUEST A QUOTE SHOP ONLINE SHOP ONLINE 1-888-POWER-58 1-888-POWER-58 parts@genpowerusa.com parts@genpowerusa.com www.genpowerusa.com www.genpowerusa.com...
  • Page 15 Installation and maintenance LEROY-SOMER 3971 en - 2010.11 / f R438 NOTES CALL US TODAY CALL US TODAY REQUEST A QUOTE REQUEST A QUOTE SHOP ONLINE SHOP ONLINE 1-888-POWER-58 1-888-POWER-58 parts@genpowerusa.com parts@genpowerusa.com www.genpowerusa.com www.genpowerusa.com...
  • Page 16 Email: parts@genpowerusa.com MOTEURS LEROY-SOMER 16015 ANGOULÊME CEDEX - FRANCE 338 567 258 RCS ANGOULÊME S.A. au capital de 62 779 000 € CALL US TODAY CALL US TODAY REQUEST A QUOTE REQUEST A QUOTE SHOP ONLINE SHOP ONLINE 1-888-POWER-58 1-888-POWER-58 parts@genpowerusa.com...

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