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Summary of Contents for Leroy-Somer LSA 49.1 4P
- Page 1 3007 en - 11.2004 / e LSA 49.1 4P ALTERNATORS Installation and maintenance...
- Page 2 LEROY-SOMER INSTALLATION AND MAINTENANCE 3007 en - 11.2004 / e LSA 49.1 4P ALTERNATORS This manual concerns the alternator which We wish to draw your attention to the contents you have just purchased. of this maintenance manual. By following certain important points during installation,...
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Page 3: Table Of Contents
LEROY-SOMER INSTALLATION AND MAINTENANCE 3007 en - 11.2004 / e LSA 49.1 4P ALTERNATORS CONTENTS 1 - RECEIPT 4 - SERVICING - MAINTENANCE 1.1 - Standards and safety measures ....4 4.1 - Safety measures ......... 14 1.2 - Inspection ............4 4.2 - Regular maintenance........ -
Page 4: Receipt
LEROY-SOMER INSTALLATION AND MAINTENANCE 3007 en - 11.2004 / e LSA 49.1 4P ALTERNATORS RECEIPT 1 - RECEIPT 1.3 - Identification The alternator is identified by means of a nameplate glued to the frame. 1.1 - Standards and safety measures... -
Page 5: Technical Characteristics
LEROY-SOMER INSTALLATION AND MAINTENANCE 3007 en - 11.2004 / e LSA 49.1 4P ALTERNATORS TECHNICAL CHARACTERISTICS 2 - TECHNICAL CHARACTERISTICS 2.1 - Electrical characteristics PARTNER LSA 49.1 alternators are machines without sliprings or revolving field brushes, wound as "2/3 pitch"; 6 or 12-wire, with class H insulation and a field excitation system available in either AREP or "SHUNT+PMG"... -
Page 6: Excitation System
LEROY-SOMER INSTALLATION AND MAINTENANCE 3007 en - 11.2004 / e LSA 49.1 4P ALTERNATORS TECHNICAL CHARACTERISTICS 2.3 - Excitation system For both AREP & PMG excitation systems, the alternator Field voltage regulator is the R 448. Frequency Slow 60Hz 50Hz... - Page 7 LEROY-SOMER INSTALLATION AND MAINTENANCE 3007 en - 11.2004 / e LSA 49.1 4P ALTERNATORS TECHNICAL CHARACTERISTICS 2.3.4 - LAM (Load Acceptance Module) 2.3.5.3 - Power characteristics The LAM system is integrated in the regulator, as standard it is active (ST5 with bridge). It can be deactivated by removing the ST5 bridge.
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Page 8: Installation
LEROY-SOMER INSTALLATION AND MAINTENANCE 3007 en - 11.2004 / e LSA 49.1 4P ALTERNATORS INSTALLATION 3 - INSTALLATION 3.1.2.2 - Two-bearing alternator - Semi-flexible coupling 3.1 - Assembly Careful alignment of the machines is recommended, checking that the concentricity and parallelism of both parts of the coupling do not exceed 0.1 mm. -
Page 9: Terminal Connection Diagrams
LEROY-SOMER INSTALLATION AND MAINTENANCE 3007 en - 11.2004 / e LSA 49.1 4P ALTERNATORS INSTALLATION 3.3 - Terminal connection diagrams 3.2.2 - Mechanical checks Before starting the machine for the first time, check that : To modify the connection, change the position of the terminal - all fixing bolts and screws are tight cables. - Page 10 LEROY-SOMER INSTALLATION AND MAINTENANCE 3007 en - 11.2004 / e LSA 49.1 4P ALTERNATORS INSTALLATION 3.3.2 - Terminal connection : 12-wire version Connection code Voltage L.L Factory connection 50 Hz 60 Hz Winding L1(U) 3 phases L3(W) L2(V) L1(U) L2(V)
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Page 11: Commissioning
LEROY-SOMER INSTALLATION AND MAINTENANCE 3007 en - 11.2004 / e LSA 49.1 4P ALTERNATORS INSTALLATION 3.3.3 - Option connection diagram External voltage potentiometer R 791 T interference suppression kit Connection of the optional current transformer or ext. source 1V (resistance 1.5 KΩ) - Page 12 LEROY-SOMER INSTALLATION AND MAINTENANCE 3007 en - 11.2004 / e LSA 49.1 4P ALTERNATORS INSTALLATION 3.5.1 - R 448 settings - Rated voltage UN for solo operation (eg. 400 V) - Or UN + 2 to 4% for parallel operation with C.T. (eg. 410 V)
- Page 13 LEROY-SOMER INSTALLATION AND MAINTENANCE 3007 en - 11.2004 / e LSA 49.1 4P ALTERNATORS INSTALLATION 3.5.2 - Max. excitation setting (excitation 3.5.3 - Special type of use ceiling) WARNING WARNING Max. excitation depending on the mains frequency 100V...140V Excitation circuit E+, E- must not be left open when the machine is running : AVR damage will occur.
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Page 14: Servicing - Maintenance
LEROY-SOMER INSTALLATION AND MAINTENANCE 3007 en - 11.2004 / e LSA 49.1 4P ALTERNATORS SERVICING - MAINTENANCE 4 - SERVICING - MAINTENANCE 4.2.4 - Electrical servicing Cleaning product for the windings 4.1 - Safety measures WARNING WARNING Do not use : trichlorethylene, perchlorethylene, trichloroethane or any alkaline products. -
Page 15: Mechanical Defects
LEROY-SOMER INSTALLATION AND MAINTENANCE 3007 en - 11.2004 / e LSA 49.1 4P ALTERNATORS SERVICING - MAINTENANCE 4.4 - Mechanical defects Fault Possible causes Excessive overheating of one or both - End shields incorrectly aligned (flanges not properly fitted). Bearing bearings (temperature >... - Page 16 LEROY-SOMER INSTALLATION AND MAINTENANCE 3007 en - 11.2004 / e LSA 49.1 4P 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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Page 17: Dismantling, Reassembly
LEROY-SOMER INSTALLATION AND MAINTENANCE 3007 en - 11.2004 / e LSA 49.1 4P ALTERNATORS SERVICING - MAINTENANCE 4.6 - Dismantling, reassembly 4.6.4 - Access to connections and the (see sections regulation system 5.4.1 & 5.4.2) Access directly by removing the box lid (48) or the AVR During the warranty period, this operation should only be access door (466). - Page 18 LEROY-SOMER INSTALLATION AND MAINTENANCE 3007 en - 11.2004 / e LSA 49.1 4P ALTERNATORS SERVICING - MAINTENANCE 4.6.7 - Complete dismantling 4.6.9 - Reassembling the rotor - Take out the DE bearing (30) as described in section 4.6.6. On single bearing machines : - Support the DE rotor (4) with a strap or with a support - Slide the rotor into the stator and position it as shown in fig 24.
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Page 19: Installation And Maintenance Of The Pmg
LEROY-SOMER INSTALLATION AND MAINTENANCE 3007 en - 11.2004 / e LSA 49.1 4P ALTERNATORS SERVICING - MAINTENANCE 4.7 - Installation and maintenance of 4.7.4 - Table of characteristics the PMG Table of average values. Alternator - 4 poles - 50 Hz - Standard winding No. 6. -
Page 20: Spare Parts
LEROY-SOMER INSTALLATION AND MAINTENANCE 3007 en - 11.2004 / e LSA 49.1 4P ALTERNATORS SPARE PARTS 5 - SPARE PARTS 5.1 - First maintenance parts Emergency repair kits are available as an option. They contain the following items : Caution : the power supply is present when the machine has Ref. -
Page 21: Exploded View, Parts List
LEROY-SOMER INSTALLATION AND MAINTENANCE 3007 en - 11.2004 / e LSA 49.1 4P ALTERNATORS SPARE PARTS 5.4 - Exploded view, parts list Stator Fixing screws 5.4.1 - Parts list Tie rod Ref. Description Cable gland washer + nut Stator assembly... - Page 22 LEROY-SOMER INSTALLATION AND MAINTENANCE 3007 en - 11.2004 / e LSA 49.1 4P ALTERNATORS SPARE PARTS 5.4.2 - Exploded view : single-bearing...
- Page 23 LEROY-SOMER INSTALLATION AND MAINTENANCE 3007 en - 11.2004 / e LSA 49.1 4P ALTERNATORS SPARE PARTS 5.4.3 - Exploded view : two-bearing...
- Page 24 MOTEURS LEROY-SOMER 16015 ANGOULÊME CEDEX - FRANCE RCS ANGOULÊME N° B 671 820 223 S.A. au capital de 62 779 000 www.leroy-somer.com...
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