103
G20, 30, 40 SIIIA Operation & Maintenance Manual
TECHNICAL CHARACTERISTICS - G20, G30 SIIIA TAL040F, TAL042C
ELECTRICAL CHARACTERISTICS
This machine is an alternator without sliprings and
revolving field brushes, wound as "2/3 pitch"; 6-wire, with
class H insulation and a field excitation system available
in either "SHUNT" version.
Electrical options
•
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.
•
Drip-proof machine, self-cooled
SHUNT
EXCITER
MAIN FIELD
Armature
Exciter field
Rotating rectifiers
-
+
T1
U1
T4
U2
T2
V1
T5
V2
* For delta connection (1PH - 3PH):
use terminals N and U, connect N and N1.
*
red
black
T3
W1
T6
W2
STATOR: 6 wires (T1 to T6 identification)
yellow
green
blue
Star
connection
*
not connected in delta connection
* Delta
connection
V S UF OPEN IN 60Hz OE UF SL
V N1 U N F1 F2
V
aristor
Summary of Contents for G20 SIIIA
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