2020.05 / f
5
Electric Power Generation
Installation and maintenance
LSA R/H 49.1
Low Voltage Alternator - 4 pole
4528 en -
2 - TECHNICAL CHARACTERISTICS
2.1 - Electrical characteristics
This alternator is a machine 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 (see diagram and
AVR manual).
AREP system with R450
The alternator complies with EN 61000-6-
3, EN 61000-6-2, EN 55011.
Electrical option:
- R791 interference suppression
T1
T2
T3
T4
T5
T6
Surge suppressor
5+
6-
R450
Aux. windings
Exciter
Field
Armature
MAIN FIELD
STATOR
Voltage reference
2.2 - Mechanical characteristic
- Steel frame
- End shields in steel, pipe in cast iron
- Greasable ball bearings
- Mounting arrangement: two-bearing with
SAE flange and standard cylindrical shaft
extension
- Degree of protection : IP 55
2.3 - Options
- Stator temperature sensors
- PTC or PT100 (1 or 2 per phase)
- Reheating resistors
Warning : the supply is still present when
the machine has stopped.
- Bearing detection probe
For example : coupling reheating resistors
and PT100 2/phase probes (see diagram
page 9).
2.4 - Excitation system
The AREP excitation system is driven by the
R450 regulator, or any other compatible
model, mounted on the outside of the
machine (see corresponding regulator
instructions and the electrical diagrams
provided with the machine).
