Nidec LSA 52.3 - Page 33

Electric Power Generation
Installation and maintenance
5382 en - 2022.11 / h
LSA 52.3 / LSA 53.2 / LSA 54.2
Industrial Range Alternators
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33
• Two-bearing
Ref. Qty Description
Screw
Ø
Torque
N.m
Ref. Qty Description
Screw
Ø
Torque
N.m
1 1 Stator assembly - - 79 1
Preloading (wavy)
washer
- -
4 1 Rotor assembly - - 90 1 Exciter field (stator) M8 20
15 1 Fan - - 96 2 Air inlet cover IP21 - -
21 1 Lifting eye - - 98 2 Air inlet cover IP23 - -
30 1
Drive end (DE) flange
(single bearing) or
drive end (DE)
bracket (two-bearing)
M12 69 100 1
Exciter armature
(rotor)
- -
33 1 Air outlet grille M6 8.3 110 6 Diode - -
36 1
Non drive end (NDE)
bracket
M12 69 120 1 Terminal support - -
41 1
Terminal box front
panel
M6 8.3 124 5 Terminals - -
47 1
Terminal box rear
panel
M6 8.3 128 3 Phase busbar M12 35
48 1
Terminal box top
panel
M6 8.3 130 1 Neutral busbar M12 35
49-50 1
Terminal box access
door
M6 8.3 190 1 Terminal block - -
51 1 Air intake grille M6 8.3 198 1
Voltage regulator
(AVR)
- -
53 1 Sealing cap - - 199 1 Protective cover IP23 - -
59 1 Inspection door - - 320 1 Coupling sleeve - -
60 1
Drive end (DE)
bearing
- - 322 3 Coupling disc M20 340
68 1
Inner bearing
retainer
- - 343 1
Diode bridge
assembly
M6 4
70 1
Non drive end (NDE)
bearing
- - 366 1
Terminal box side
panel
M6 8.3
78 1 Inner bearing retainer M8 20 367 1
Terminal box side
panel for inspection
door
M6 8.3