Leroy-Somer LSA 47.2 Installation And Maintenance Manual

Leroy-Somer LSA 47.2 Installation And Maintenance Manual

4 poles alternators

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Users guide and maintenance
manual
Leroy Somer
Alternators
LSA 47.2 – 4 POLES
SHUNT - AREP - PMG
Réf. constructeur :
Réf. GPAO : 33522060501 ind1
3742en-04.2003/a

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Summary of Contents for Leroy-Somer LSA 47.2

  • Page 1 Users guide and maintenance manual Leroy Somer Alternators LSA 47.2 – 4 POLES SHUNT - AREP - PMG Réf. constructeur : Réf. GPAO : 33522060501 ind1 3742en-04.2003/a...
  • Page 2 3742 en - 04.2003 / a LSA 47.2 - 4 POLES ALTERNATORS Installation and maintenance...
  • Page 3 Warning symbol for general danger to personnel. Warning symbol for electrical danger to personnel. Note: LEROY-SOMER reserves the right to modify the Copyright 2003: LEROY-SOMER characteristics of its products at any time in order to This document is the property of: incorporate the latest technological developments.
  • Page 4: Table Of Contents

    LEROY-SOMER INSTALLATION AND MAINTENANCE 3742 en - 04.2003 / a LSA 47.2 - 4 POLES ALTERNATORS CONTENTS 1 - RECEIPT 5 - SPARE PARTS 1.1 - Standards and safety measures ..... 4 5.1 - First maintenance parts ......... 24 1.2 - Inspection ............4 5.2 - Technical support service ......
  • Page 5: Receipt

    The machine name is defined according to various criteria, for - the recommendations of the example: LSA 47.2 M7 C6/4 - International Electrotechnical Commission • LSA: name used in the PARTNER range IEC 34-1, (EN 60034).
  • Page 6: Technical Characteristics

    - Steel frame 2.1 - Electrical characteristics - Cast iron end shields The LSA 47.2 alternator is a machine without sliprings or - Protected ball bearings, greased for life revolving armature brushes, wound as “2/3 pitch”, 6 or - Mounting arrangements:...
  • Page 7: Shunt Excitation System

    60 Hz 2.3.3 - Additional functions with the R 448 As an option, the LSA 47.2 SHUNT alternator can work with 2.3.1 - R 230 AVR the R 448 AVR in order to obtain the following functions: - Parallel operation between alternators with C.T.
  • Page 8: Arep/Pmg Excitation System

    LEROY-SOMER INSTALLATION AND MAINTENANCE 3742 en - 04.2003 / a LSA 47.2 - 4 POLES ALTERNATORS TECHNICAL CHARACTERISTICS 2.4 - AREP/PMG excitation system adjustable via potentiometer P4 - max. excitation current adjustment via P5: 4 to 10A For both AREP & PMG excitation systems, the alternator - 50/60 Hz selection via ST3 jumper voltage regulator is the R 448.
  • Page 9 LEROY-SOMER INSTALLATION AND MAINTENANCE 3742 en - 04.2003 / a LSA 47.2 - 4 POLES ALTERNATORS TECHNICAL CHARACTERISTICS PMG excitation Voltage R448 Transient voltage drop (U/f) 2.4.3 - Frequency compared with voltage (without LAM) Frequency Voltage Bend Max. speed drop 57.5 Hz...
  • Page 10: Installation

    LEROY-SOMER INSTALLATION AND MAINTENANCE 3742 en - 04.2003 / a LSA 47.2 - 4 POLES ALTERNATORS INSTALLATION 3 - INSTALLATION 3.1.3 - Location Ensure that the ambient temperature in the room where the 3.1 - Assembly alternator is placed cannot exceed 40°C for standard power ratings (for temperatures >...
  • Page 11: Terminal Connection Diagrams

    LEROY-SOMER INSTALLATION AND MAINTENANCE 3742 en - 04.2003 / a LSA 47.2 - 4 POLES ALTERNATORS INSTALLATION 3.3 - Terminal connection diagrams To modify the connection, change the position of the stator cables on the terminals. The winding code is specified on the nameplate.
  • Page 12 LEROY-SOMER INSTALLATION AND MAINTENANCE 3742 en - 04.2003 / a LSA 47.2 - 4 POLES ALTERNATORS INSTALLATION 3.3.2 - Terminal connection: 6 wire (not possible with the R 230) Connection codes Voltage L.L Factory connection L1(U) 50 Hz 60 Hz...
  • Page 13: Commissioning

    LEROY-SOMER INSTALLATION AND MAINTENANCE 3742 en - 04.2003 / a LSA 47.2 - 4 POLES ALTERNATORS INSTALLATION Current transformer connection D connection D & A connection - PH 1 In/2 - Secondary 1 A In/2 (D conn.) - Secondary 1 A...
  • Page 14: Setting Up

    LEROY-SOMER INSTALLATION AND MAINTENANCE 3742 en - 04.2003 / a LSA 47.2 - 4 POLES ALTERNATORS INSTALLATION 3.5 - Setting up 3.5.2 - R 448 settings SHUNT, AREP or PMG excitation system WARNING ARNING Before any intervention on the AVR, make sure that the...
  • Page 15 LEROY-SOMER INSTALLATION AND MAINTENANCE 3742 en - 04.2003 / a LSA 47.2 - 4 POLES ALTERNATORS INSTALLATION f) Turn the stability potentiometer P3 anti-clockwise to 2 3.5.3 - Max. excitation setting (excitation marks away from the central position. ceiling) g) Start the engine and set its speed to a frequency of 48 Hz Max.
  • Page 16 LEROY-SOMER INSTALLATION AND MAINTENANCE 3742 en - 04.2003 / a LSA 47.2 - 4 POLES ALTERNATORS INSTALLATION 3.5.4 - Special type of use - Field weakening AREP / PMG The exciter is switched off by disconnecting the AVR power supply (1 wire on each auxiliary winding); contact rating: 16 A - 250V A.C.
  • Page 17: Servicing - Maintenance

    LEROY-SOMER INSTALLATION AND MAINTENANCE 3742 en - 04.2003 / a LSA 47.2 - 4 POLES ALTERNATORS SERVICING - MAINTENANCE 4 - SERVICING - MAINTENANCE 4.2.4 - Electrical servicing Cleaning product for the windings 4.1 - Safety measures WARNING ARNING Do not use: trichlorethylene, perchlorethylene, Servicing or troubleshooting must be carried out trichloroethane or any alkaline products.
  • Page 18: Fault Detection

    LEROY-SOMER INSTALLATION AND MAINTENANCE 3742 en - 04.2003 / a LSA 47.2 - 4 POLES ALTERNATORS SERVICING - MAINTENANCE 4.3 - Fault detection If, when commissioned, the alternator does not work normally, the source of the malfunction must be identified.
  • Page 19: Electrical Faults

    LEROY-SOMER INSTALLATION AND MAINTENANCE 3742 en - 04.2003 / a LSA 47.2 - 4 POLES ALTERNATORS SERVICING - MAINTENANCE 4.5 - 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 20 LEROY-SOMER INSTALLATION AND MAINTENANCE 3742 en - 04.2003 / a LSA 47.2 - 4 POLES ALTERNATORS SERVICING - MAINTENANCE 4.5.1 - Checking the winding Assembly A: Connect a 12 V battery in series with a rheostat of approximately 50 ohms - 300 W and a diode on both exciter You can check the winding insulation by performing a high field wires (5+) and (6-).

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