Specifications

5
LEROY-SOMER
2011.01/ h
Installation and maintenance
LSA 46.2 - 4 POLES
ALTERNATORS
3856 en -
2 - TECHNICAL CHARACTERISTICS
1.1 - Electrical characteristics
The LSA 46.2 alternator is a machine
without sliprings or revolving armature
brushes, wound as “2/3 pitch”, 6 or 12-
wire, with class H insulation and a eld
excitation system available in either
SHUNT, AREP or «PMG» version (see
diagrams and AVR manuals).
2.1.1 - Electrical options
- Stator temperature detection sensors
- Bearing sensors (PTC, PT100, etc)
- Space heater
Interference suppression conforms to
standard EN 55011, group 1, class B
(Europe).
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
2.1.1 - Mechanical options
- Air inlet lter
- Regreasable ball bearings
- IP 44 protection
T1
T2 T3
T4
T5
T6
Varistor
5+
6-
T7
T8 T9
T10
T11
T12
R 250
SHUNT SYSTEM
AREP SYSTEM
PMG SYSTEM
STATOR : 12-wire (marking T1 to T 12)
EXCITER
Field
Armature
EXCITER
Field
Armature
EXCITER
Field
Armature
MAIN FIELD
Power supply / Detection
T1
T2 T3
T4
T5
T6
Varistor
5+
6-
T7
T8 T9
T10
T11
T12
R 450
Aux. windings
STATOR : 6 or 12-wire (marking T1 to T 12)
MAIN FIELD
Voltage reference
T1
T2 T3
T4
T5
T6
Varistor
5+
6-
T7
T8 T9
T10
T11
T12
R 450
PMG
STATOR : 6 or 12-wire (marking T1 to T12)
MAIN FIELD
Voltage reference
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