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2021.06 / o

6

Electric Power Generation

Installation and maintenance

LSA 42.3

Low Voltage Alternator - 4 pole

4803 en -

T1

T2

T3

T4

T5

T6

Varistor

Varistor

Varistor

5+ 

6- 

T7

T8

T9

T10

T11

T12

T1

T2

T3

T4

T5

T6

5+ 

6- 

T7

T8

T9

T10

T11

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

Auxiliary windings

MAIN FIELD

Voltage reference

MAIN FIELD

Voltage reference

EXCITER

Field

Armature

EXCITER

Field

Armature

EXCITER

Field

Armature

• SHUNT three-phase 12-wire

• AREP three-phase 12-wire

• PMG three-phase 12-wire

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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