R 438
T1
T2 T3
T4
T5
T6
5 +
6 –
T7
T8 T9
T10
T11
T12
R 438
PMG
2 - TECHNICAL
CHARACTERISTICS
2.1 - Electrical characteristics
PARTNER LSA 43.2/44.2 alternators are generators without
sliprings or revolving eld brushes, wound as «2/3 pitch», 12-
wire; the insulation is class H and the îš¿eld excitation system is
available in either «SHUNT», «AREP» or «PMG» versions
(see AVR manual).
2.1.1 - Options
- Stator temperature detection probes.
- Space heaters.
Interference suppression conforms to standard EN 55011,
group 1, class B. (Europe).
2.1.2 - SHUNT system with R 250 AVR
Other version R 251 AVR for dedicated single-phase or R 448
for additional function.
2.1.3 - AREP system with R 438 AVR
2.1.4 - PMG system with R 438 AVR
2.2 - Mechanical characteristics
- Steel frame
- Cast iron end shields
- Protected ball bearings, greased for life
- Mounting arrangements:
IM 1201 (MD 35) foot and ange mounted, single-bearing with
SAE coupling disc.
IM 1001 (B 34) double-bearing with SAE ange and standard
cylindrical shaft extension.
- Drip-proof machine, self-cooled
- Degree of protection: IP 23
2.2.1 - Options
- Air inlet îš¿lter
- Regreasable bearings (only for LSA 44.2 and SHUNT or
AREP version)
- IP 44 protection
Exiter
Exiter
Exiter
Armature
Armature
Armature
Field
Field
Field
SERIES
connection
PARALLEL
connection
PARALLEL
connection
MAIN FIELD
MAIN FIELD
MAIN FIELD
STATOR : 12 wires (marked T1 to T12)
STATOR : 12 wires (marked T1 to T12)
STATOR : 12 wires (marked T1 to T12)
Auxiliary windings
Power supply and voltage reference
Voltage reference
Voltage reference
Varistor
Varistor
Varistor
Red
Yellow
Green
Black
INSTALLATION AND MAINTENANCE
LSA 43.2 / 44.2 - 4-poLe
ALTeRNAToRS
3434 en -
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