Specifications

5
INSTALLATION AND MAINTENANCE
LSA 50.1 / LSA 51.2
ALTERNATORS
TECHNICAL CHARACTERISTICS
Réf. 3281 en - 10.2007 / g
LEROY-SOMER
T1
T2 T3
T4
T5
T6
5+
6-
R 449
Aux. windings
Field
STATOR
Voltage detection
EXCITER
Armature
MAIN FIELD
Surge suppressor
T1
T2 T3
T4
T5
T6
Surge suppressor
5+
6-
R 449
Field
STATOR
Voltage detection
EXCITER
Armature
MAIN FIELD
PMG
2 - TECHNICAL CHARACTERISTIC S
2.1 - Electrical characteristics
LSA 50.1 / 51.2 alternators are machines without sliprings or
revolving field brushes, wound as "2/3 pitch", 6-wire, with
class H insulation and a field excitation system available in
either AREP+PMI or "PMG" version (see diagrams).
AREP+PMI system
with R 449
PMG system
with R 449
Interference suppression conforms to 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
- Greasable ball bearings
- 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
- Degree of protection : IP 23
2.2.1 - Options
- Air inlet filter, air outlet filter