Doosan G20 SIIIA, Operation & Maintenance Manual

Page: 104 / 122

104 G20, 30, 40 SIIIA Operation & Maintenance Manual
TECHNICAL CHARACTERISTICS - G40 SIIIA LSA42.3
ELECTRICAL CHARACTERISTICS
The PARTNER LSA 42.3 alternator is a 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”
or “PMG” version.
In order to conform to standard EN 61000-6.3, EN
61000-6.2, the R 791 interference suppression kit is
needed.
Electrical options
• Stator temperature detection probes.
• Space heaters.
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
Options:
• Direct power output by (non reconnectable) cables,
regulator fitted outside the alternator.
• 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).
T1
T2 T3
T4
T5 T6
Va
ris
to
r
+ -
Field
STATOR : 12 wires (T1 to T12 identification)
STATOR : 12 wires (T1 to T12 identification)
EXCITER
EXCITER
T7
T8 T9
T10
T11 T12
+ -
Armature
MAIN FIELD
Voltage reference
5+
6 -
Red
Black
SHUNT version
Aux. windings
Green Y
ellow
Red Black
T1
T2 T3
T4
T5 T6
Va
ris
to
r
+ -
Field
STATOR : 6 or 12 wires (T1 to T 12 identification)
Voltage reference
Voltage reference
5+
6-
T7
T8 T9
T10
T11 T12
+ -
Armature
EXCITER
Field
Armature
MAIN FIELD
MAIN FIELD
R 438
White
Blue
AREP version
PMG version
T1
T2 T3
T4
T5 T6
Varistor
5+ 6-
T7
T8 T9
T10
T11 T12
R 438
PMG
R 220