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2021.06 / o

25

Electric Power Generation

Installation and maintenance

LSA 42.3

Low Voltage Alternator - 4 pole

4803 en -

Angoulême, 4

th

 March 2021 

Moteurs Leroy-Somer 

Siege social : Boulevard Marcellin Leroy CS 10015 - 16915 Angoulême cedex 9 - France 

SAS au capital de 38 679 664 € - RCS Angoulême 338 567 258 

4152 en - 2021.03 / t 

EC Declaration of compliance and incorporation 

This Declaration applies to the generators designed to be incorporated into machines complying with the 

Machinery Directive Nr 2006/42/EC dated 17 May 2006. 

MOTEURS LEROY-SOMER 

Boulevard Marcellin Leroy 

16015 Angoulême 

France 

MLS HOLICE STLO.SRO 

Sladkovskeho 43 

772 04 Olomouc 

République Tchèque

 

MOTEURS LEROY-SOMER 

1, rue de la Burelle 

Boite Postale 1517 

45800 St Jean de Braye 

France 

LEROY-SOMER ELECTRO- 

TECHNIQUE Co., Ltd  

No1 Aimosheng Road, Galshan Town, 

Cangshan District. Fuzhou, Fujian 

350026 Chine 

NIDEC INDUSTRIAL AUTOMATION 

INDIA PRIVATE Ltd - BANGALORE 

#

45, Nagarur, Huskur Road 

Off Tumkur Road, Bengaluru-562 162 

Inde 

NIDEC INDUSTRIAL AUTOMATION 

INDIA PRIVATE Ltd - HUBLI 

#

64/A, Main Road, Tarihal Industrial 

Area, Tarihal, Hubli-580 026 

Inde 

Declares hereby that the electric generators of the types: 

LSA 40 – LSA 42.3 – LSA 44.3 – LSA 46.3 – LSA 47.2 – LSA 47.3 – LSA 49.1 – LSA 49.3 – LSA 50.1 – LSA 

50.2 – LSA 51.2 – LSA 52.2 – LSA 52.3 – LSA 53 – LSA 53.1 – LSA 53.2 – LSA 54 – LSA 54.2 – TAL 040 – 

TAL 042 – TAL 044 – TAL 046 – TAL 047 – TAL 0473 – TAL 049 – LSAH 42.3 – LSAH 44.3 as well as their 

derivatives, manufactured by Leroy-Somer or on Leroy-Somer's behalf, comply with the following International 

Standards and Directive: 

-

EN and IEC 60034-1, 60034-5 and 60034-22.

-

ISO 8528-3 “Reciprocating internal combustion engine driven alternating current generating sets. Part

3. Alternating current generators for generating sets”.

-

Low Voltage Directive Nr 2014/35/EU dated 26 February 2014.

Furthermore, these generators, designed in compliance with the Machine Directive Nr 2006/42, are therefore 

able to be incorporated into Electrical Gen-Sets complying with the following International Directives: 

-

Machinery Directive Nr 2006/42/EC dated 17 May 2006.

-

EMC Directive Nr 2014/30/EU dated 26 February 2014, as intrinsic levels of emissions and immunity

are concerned.

-

ROHS Directive Nr 2011/65/EU dated 08 June 2011 and Annex II Nr 2015/863 dated 31 March 2015.

WARNING: 

The here mentioned generators should not be commissioned until the corresponding Gen-Sets have been 

declared in compliance with the Directives Nr 2006/42/EC, 2014/30/EU, 2011/65/EU and 2015/863, as well as 

with other relevant Directives. 

Leroy-Somer  undertakes to transmit, in response to a reasoned request by the national authorities, relevant 

information on the generator. 

      Technical Managers  

J.P. CHARPENTIER    Y. MESSIN 

The contractual EC Declaration of compliance and incorporation can be obtained from your contact on 

request.

Summary of Contents for LSA 42.3

Page 1: ...LSA 42 3 Low Voltage Alternator 4 pole Installation and maintenance...

Page 2: ...t guards in case anything is ejected from them b Do not allow children younger than 14 to go near the air outlet guards Aset of self adhesive stickers depicting the various warning symbols is included...

Page 3: ...Assembly 7 3 2 Checks prior to first use 8 3 3 Terminal connection diagrams 8 3 4 Commissioning 11 3 5 Setting up 11 4 SERVICING MAINTENANCE 12 4 1 Safety measures 12 4 2 Routine maintenance 12 4 3 Be...

Page 4: ...If there are obvious signs of knocks contact the transporter you may be able to claim on their insurance and after a visual check turn the machine by hand to detect any malfunction 1 3 Identification...

Page 5: ...ball bearings greased for life Mounting arrangement single bearing with standard feet and SAE flanges coupling discs two bearing with SAE flange and standard cylindrical shaft extension Drip proof ma...

Page 6: ...1 T12 T1 T2 T3 T4 T5 T6 5 6 T7 T8 T9 T10 T11 T12 PMG R220 D350 D350 STATOR 12 wire marking T1 to T12 STATOR 12 wire marking T1 to T12 STATOR 12 wire marking T1 to T12 MAIN FIELD Power supply Detection...

Page 7: ...fore coupling check the compatibility between the alternator and the engine by performing undertaking a torsional analysis of the transmission alternators data are available on request checking the di...

Page 8: ...ical checks Before starting the machine for the first time check that all fixing bolts are tight the length of bolt and the tightening torque are correct the cooling air is drawn in freely the protect...

Page 9: ...T12 T10 T4 T9 T3 T6 T11 T5 T2 T8 L2 V A 3PH 60 Hz 50 Hz 190 208 220 230 190 240 190 208 6 7 8 1PH 3PH R220 0 T8 110 V T11 D350 U T1 V T2 W T3 R220 0 T8 110 V T11 D350 U T1 V T2 W T3 R220 0 T8 110 V T...

Page 10: ...T3 T2 T1 T5 T6 M L L T9 T8 T7 T12 T10 T11 T4 T3 T2 T1 T5 T6 T1 T4 T3 T2 L L M L L 220 230 240 110 115 120 T2 T3 T2 T3 T1 T4 L M L L M T1 T4 T3 T2 L L L L 110 115 120 T1 T3 T2 T4 T1 T3 T2 T4 L M L L M...

Page 11: ...terminal box is connected to the electrical earth circuit The earth terminal is connected to the frame The connections inside the terminal box must never be subjected to stress due to cables connecte...

Page 12: ...electrical connections in the installation Electrical servicing Commercially available volatile degreasing agents can be used Do not use trichlorethylene perchlo rethylene trichloroethaneoranyalkalin...

Page 13: ...ator frame more than 40 C above the ambient temperature Air flow inlet outlet partially clogged or hot air is being recycled from the alternator or engine Alternator operating at too high a voltage 10...

Page 14: ...ted check the resistance Speed too low Increase the drive speed do not touch theAVR voltage pot P2 before running at the correct speed Voltage too high AdjustAVR voltage potentiometer Adjustment ineff...

Page 15: ...ode 12V battery Rh 50 300W ASSEMBLY A Field Assembly B Connect a Variac variable power supply and a diode bridge on both exciter field wires 5 and 6 Both these systems should have characteristics whic...

Page 16: ...ection 5 3 The screws for fixing the feet on the housing and immobilising the stator must not be removed screw of the stator lower Access to connections and the regulation system The terminals are acc...

Page 17: ...sher 79 have been fitted on the NDE shield 36 Refit the DE shield 30 and tighten the fixing screws Check that the alternator assembly is correctly mounted and that all screws are tightened Accessing t...

Page 18: ...lower Three phase 4 pole SHUNT excitation Resistances at 20 C Type Stator L N Rotor Exciter field Exciter armature VS1 0 277 0 60 17 6 0 19 VS2 0 261 0 62 17 6 0 19 VS3 0 213 0 67 17 6 0 19 S4 S5 0 1...

Page 19: ...citer field Type No load At rated load VS1 0 55 1 31 VS2 0 52 1 31 VS3 0 51 1 22 S4 0 48 1 03 S5 0 48 1 16 M7 0 46 1 15 M8 0 50 1 21 L9 0 50 1 29 Dedicated single phase M1 4 pole SHUNT excitation 60 H...

Page 20: ...nical support service Our technical support service will be pleased to provide any additional information you may require For all spare parts orders or technical support requests send your request to...

Page 21: ...2021 06 o 21 Electric Power Generation Installation and maintenance LSA 42 3 Low Voltage Alternator 4 pole 4803 en 5 3 Exploded views parts list and tightening torque Single bearing...

Page 22: ...2021 06 o 22 Electric Power Generation Installation and maintenance LSA 42 3 Low Voltage Alternator 4 pole 4803 en Two bearing...

Page 23: ...rminal block support M5 6 30 1 Drive end DE shield 124 1 Terminal block M5 6 33 1 Air outlet grille M5 4 133 1 Cover option M5 3 6 36 1 Non drive end NDE shield M10 34 134 1 Support tab option 40 1 Pl...

Page 24: ...Waste hazardous materials The following components and materials require special treatment and must be separated from the alternator before the recycling process electronic materials found in the term...

Page 25: ...2 LSA 54 LSA 54 2 TAL 040 TAL 042 TAL 044 TAL 046 TAL 047 TAL 0473 TAL 049 LSAH 42 3 LSAH 44 3 as well as their derivatives manufactured by Leroy Somer or on Leroy Somer s behalf comply with the foll...

Page 26: ...2021 06 o 26 Electric Power Generation Installation and maintenance LSA 42 3 Low Voltage Alternator 4 pole 4803 en...

Page 27: ...ast and efficient repair support and maintenance services Trust your alternator maintenance and support to electric power generation experts Our field personnel are 100 qualified and fully trained to...

Page 28: ...www emersonindustrial com 2021 06 o www leroy somer com epg 4803 en Linkedin com company leroy somer Twitter com Leroy_Somer_en Facebook com LeroySomer Nidec en YouTube com LeroySomerOfficiel...

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