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Leroy-Somer LSA 43.2, Installation And Maintenance Manual

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Leroy-Somer LSA 43.2 Installation And Maintenance Manual Download Page 22

22

LEROY-SOMER

2013.01 / k

Installation and maintenance

LSA 43.2/44.2 - 4 POLES

ALTERNATORS

3434 en -

Ref. Qty

Description

Screw

Ø

Torque

N.m Ref. Qty

Description

Screw

Ø

Torque

N.m

1

1

Stator assembly

-

-

70

1

NDE bearing

-

-

4

1

Rotor assembly

-

-

79

1

Preloading wavy 

washer

-

-

15

1

Fan

M6

5

90

1

Exciter field

-

-

16

6

Fixing screws

(44.2 only)

-

-

91

4

Exciter field fixing 

screw

M6

10

28

1

Earth terminal

M8

26

100

1

Exciter armature

-

-

30

1

DE shield

-

-

107

1

Diode crescent

support

-

-

33

1

Air outlet grille

M6

5

120

1

Terminal block support 

(AREP)

-

-

36

1

Shield on exciter end

-

-

124

1

Terminal block

M10

20

37

4

Tie rod 43.2

Tie rod 44.2

M12

M14

57

90

198

1

Voltage regulator 

(AVR)

-

-

41

1

Cover front panel

-

-

207

1

AVR damper seal

-

-

47

1

Cover rear panel

-

-

217

1

Terminal block

-

-

48

1

Cover top panel

-

-

320

1

Hub (43.2 L7 & 44.2)

-

-

49

34 Fixing screws

M6

5

322

1

Coupling disc

-

-

51

1

Air intake grille

-

-

323

-

Fixing screws 43.2

Fixing screws 44.2

M12

M16

110

250

59

3

Inspection door

-

-

324

1

Clamping washer 

(43.2 S1 to L6)

-

-

60

1

DE bearing

-

-

325

-

Spacer shim

(43.2 L7 & 44.2 only)

-

-

62

2/4 Bearing retainer fixing 

screw

-

-

343

1

Diode bridge 

assembly

M6

5

63

1

Cable gland washer 

(43.2 only)

-

-

347

1

Surge suppressor

-

-

67

1

Circlips

-

-

349

1

«O» ring

-

-

68

1

Inner bearing retainer

-

-

410

1

End shield

-

-

Summary of Contents for LSA 43.2

Page 1: ...k 343 347 48 1 124 41 198 107 37 4 16 15 15 30 33 322 324 325 325 320 323 320 49 28 207 120 This manual is to be given to the end user 3434 en LSA 43 2 44 2 4 POLES ALTERNATORS Installation and maint...

Page 2: ...electrical danger to personnel WARNING SYMBOLS We wish to draw your attention to the following 2 safety measures which must be complied with a During operation do not allow anyone to stand in front o...

Page 3: ...STALLATION 6 3 1 Assembly 6 3 2 Checks prior to first use 7 3 3 Terminal connection diagrams 7 3 4 Commissioning 10 3 5 Setting up 10 4 SERVICING MAINTENANCE 11 4 1 Safety measures 11 4 2 Routine main...

Page 4: ...international standards See the EC Declaration of Incorporation on the last page 1 2 Inspection On receipt of your alternator check that it has not suffered any damage in transit If there are obvious...

Page 5: ...Mounting arrangements IM 1201 MD 35 foot and flange mounted single bearing with SAE coupling disc IM 1001 B 34 double bearing with SAE flange and standard cylindrical shaft extension Drip proof machin...

Page 6: ...ing the machines check that they are compatible by undertaking a torsional analysis of the transmission checking the dimensions of the flywheel and its housing the flange coupling discs and offset WAR...

Page 7: ...ith the exciter field disconnected Note Prolonged standstill In order to avoid these problems we recommend the use of space heaters as well as turning over the machine from time to time Space heaters...

Page 8: ...T6 L1 U L2 V L3 W L L 60 Hz 50 Hz 110 120 120 110 120 120 130 6 7 8 T9 T8 T7 T12 T10 T11 T4 T3 T2 T1 T5 T6 L L L3 W T1 T7 T10 T9 T3 T6 T11 T5 T2 T8 L2 V B T12 T4 L1 V Connection codes L L voltage Fact...

Page 9: ...60Hz Output Exciter field connection 6 5 6 R250 R438 6 5 6 Single phase dedicated SHUNT version R 251 AVR 2 wire output without terminal block Series connection shunt excitation White Blue Black Red...

Page 10: ...terminal inside the terminal box is connected to the electrical earth circuit The earth terminal ref 28 is connected to the frame The connections inside the terminal box must never be subjected to st...

Page 11: ...al connections in the installation Electrical servicing Commercially available volatile degreasing agents can be used Do not use trichlorethylene perchlo rethylene trichloroethaneoranyalkaline product...

Page 12: ...ting or play in coupling Rotor balancing fault Engine Alternator Excessive vibration and humming noise coming from the machine Phase imbalance Stator short circuit Abnormal noise Alternator damaged by...

Page 13: ...coil short circuited 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 AdjustAVRvoltage potentiometer...

Page 14: ...0W 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 which are compatible with th...

Page 15: ...2 Replace the bridges respecting the polarity see section 4 5 1 Replace the surge suppressor 347 Refit the air intake grille 51 Replace the terminal box lid 48 Access to connections and the regulation...

Page 16: ...is correctly mounted and that all screws are tightened Accessing the main field and stator Dismantling Follow the procedure for dismantling the bearings see sections 4 6 5 1 and 4 6 6 1 Remove the co...

Page 17: ...57 18 4 0 23 L65 0 083 1 76 18 4 0 23 L8 0 063 1 96 18 4 0 23 Fieldexcitationcurrentiexc A 400V 50Hz i exc excitation current of the exciter field LSA 43 2 no load at load S1 0 5 1 3 S15 0 5 1 5 S25...

Page 18: ...0 024 3 32 0 17 0 28 4 6 0 5 L12 0 019 3 66 0 16 0 21 4 6 0 5 Fieldexcitationcurrentiexc A 400V 50Hz i exc excitation current of the exciter field LSA 44 2 no load at load VS3 1 3 6 VS45 1 4 2 S7 1 3...

Page 19: ...sors with thermistors PTC These are thermistor triplets with a positive temperature coefficient installed in the stator winding 1 per phase There can be a maximum of 2 triplets in the winding at 2 lev...

Page 20: ...ce LSA 43 2 44 2 4 POLES ALTERNATORS 3434 en 5 4 Exploded view parts list and tightening torque LSA 43 2 44 2 single bearing 343 349 347 70 79 90 36 51 48 59 1 124 41 47 198 100 107 91 37 4 16 15 15 3...

Page 21: ...allation and maintenance LSA 43 2 44 2 4 POLES ALTERNATORS 3434 en LSA 43 2 44 2 double bearing 343 349 347 70 79 90 36 51 59 1 124 41 48 49 47 100 107 91 28 37 4 15 30 33 217 410 60 68 63 67 198 207...

Page 22: ...ort AREP 36 1 Shield on exciter end 124 1 Terminal block M10 20 37 4 Tie rod 43 2 Tie rod 44 2 M12 M14 57 90 198 1 Voltage regulator AVR 41 1 Cover front panel 207 1 AVR damper seal 47 1 Cover rear pa...

Page 23: ...d IEC 60034 1 and 60034 5 ISO 8528 3 Reciprocating internal combustion engine driven alternating current generating sets Part 3 Alternating current generators for generating sets Low Voltage Directive...

Page 24: ...www leroy somer com...

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