Doosan DX225LC, Manual

Page: 21 / 136

Electrical System SP000935
Page 20
CHARGING SYSTEM
When the starter switch (5) is turned to the "ON" position, an
initial excited current flows to the field coil of the alternator (7)
through the battery relay (2) and circuit breaker (4). When the
engine is started from this condition the alternator (7) starts
charging. The current flows from the "B (B+)" terminal of
alternator (7)
o
circuit breaker (4)
o
battery relay (2)
o
battery
(1).
The alternator also supplies electric current to other electrical
components. When the alternator (7) starts to operate, a current
flows from the "R (I)" terminal of alternator
o
diode (8)
o
battery relay (2) coil securing a path for the charging current to
the battery (1). Thus preventing the possibility of a high voltage
build up and possible damage to the electrical system.
TRIO DIODE
0.5 uF
8
START
ON
OFF
STARTER SWITCH CONNECTION
TML
PST
B BR R1 R2 C ACC
F+
F-
E
REG.
I(L)
FIELD
GRD
7
12V 100AH
R(I) P(R)
B+
8
B(B+)
-
E
BR
4
B
12V 100AH
1
+ - +
2
A
6
R2
ACC
R1
B
BR
C
5
0.5G
3
FG007238
Figure 8 CHARGING CIRCUIT
Reference
Number
Description
1 Battery
2 Battery Relay
3 Fusible Link
4 Circuit Breaker
5 Starter Switch
6 Fuse Box
7 Alternator
8 Diode
Reference
Number
Description