5
InstallatIon and maIntenance
LSA 42.2 - 2 & 4 POLE
ALTERNATORS
3433 en - 2010.10 / g
LEROY-SOMER
2 - TECHNICAL CHARACTERISTICS
2.1 - Electrical characteristics
The PARTNER LSA 42.2 alternator is generator without
sliprings and revolving field brushes, wound as “2/3 pitch”; 12-
wire, with class H insulation and a field excitation system
available in either “SHUNT” or “AREP” version (see sections
2.3, 2.4). Interference suppression conforms with standard EN
55011, group 1, class B.
2.1.1 - Options
- Stator temperature detection probes.
- Space heaters.
2.2 - Mechanical characteristics
- Steel frame
- End shields in cast iron
- Mounting arrangement
md 35 :
single bearing with standard feet and SAE flanges/coupling
discs.
B 34 :
two-bearing with SAE flange and standard cylindrical shaft
extension.
- Drip-proof machine, self-cooled
2.2.1 - Options
- Protection against harsh environmentsh.
- Air input filter, air output labyrinth cowling.
Alternators fitted with air inlet filters should be derated by 5%
(power).
To prevent excessive temperature rise caused by clogged
filters, it is advisable to fit the stator winding with thermal
sensors (PTC or PT100).
T1
T2
T3
T4
T5
T6
Va
ris
to
r
+
-
Field
STATOR : 12 wires (T1 to T12 identification)
Exciter
T7
T8
T9
T10
T11
T12
+
-
Armature
MAIN FIELD
R 250
Voltage reference
5+
6 -
Red
Black
T1
T2
T3
T4
T5
T6
Va
ris
to
r
+
-
Field
STATOR : 12 wires (T1 to T12 identification)
Exciter
T7
T8
T9
T10
T11
T12
+
-
Armature
MAIN FIELD
R 250
Voltage reference
5+
6 -
Red
Black
Aux. windings
Green
Yellow
Red
Black
T1
T2
T3
T4
T5
T6
Va
ris
to
r
+
-
Field
STATOR : 12 wires (T1 to T 12 identification)
Voltage reference
5+
Exciter
6-
T7
T8
T9
T10
T11
T12
+
-
Armature
MAIN FIELD
R 438
White
Blue
Aux. windings
Green
Yellow
Red
Black
T1
T2
T3
T4
T5
T6
Va
ris
to
r
+
-
Field
STATOR : 12 wires (T1 to T 12 identification)
Voltage reference
5+
Exciter
6-
T7
T8
T9
T10
T11
T12
+
-
Armature
MAIN FIELD
R 438
White
Blue
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Страница 191: ...July 2009 Pub No 99610 29120 OPERATION MAINTENANCE MANUAL 189 242 ...
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