Guardian Technologies 4270 Manual De Usuario
Section 2
MAJOR GENERATOR COMPONENTS
3. Two excitation winding output leads (No. 2 and 6). These leads
deliver unregulated excitation current to the voltage regulator.
4. Three (3) battery charge output leads (No. 55, 66 and 77).
Figure 2-2. – Stator Output Leads
BRUSH HOLDER
The brush holder is retained in the rear bearing carri-
er by two M5 screws. It retains two brushes, which
contact the Rotor slip rings and allow current flow
from stationary parts to the revolving Rotor. The posi-
tive (+) brush is located nearest the Rotor bearing.
er by two M5 screws. It retains two brushes, which
contact the Rotor slip rings and allow current flow
from stationary parts to the revolving Rotor. The posi-
tive (+) brush is located nearest the Rotor bearing.
Figure 2-3. – Brush Holder
BATTERY CHARGE COMPONENTS
The Stator incorporates dual battery charge windings.
A battery charge rectifier (BCR) changes the AC out-
put of these windings to direct current (DC). Battery
charge winding output is delivered to the unit battery
via the rectifier, a 14 amp fuse and Wire No. 15. A
one ohm, 25 watt resistor is connected in series with
the grounded side of the circuit.
A battery charge rectifier (BCR) changes the AC out-
put of these windings to direct current (DC). Battery
charge winding output is delivered to the unit battery
via the rectifier, a 14 amp fuse and Wire No. 15. A
one ohm, 25 watt resistor is connected in series with
the grounded side of the circuit.
Figure 2-4. – Battery Charge Circuit
EXCITATION CIRCUIT COMPONENTS
GENERAL:
During operation, the Rotor's magnetic field induces a
voltage and current flow into the Stator excitation
winding. The resultant AC output is delivered to a
voltage regulator via an excitation circuit breaker
(CB2).
During operation, the Rotor's magnetic field induces a
voltage and current flow into the Stator excitation
winding. The resultant AC output is delivered to a
voltage regulator via an excitation circuit breaker
(CB2).
Figure 2-5. – Schematic: Excitation Circuit
EXCITATION CIRCUIT BREAKER:
The excitation circuit breaker (CB2) is self-resetting
and cannot be reset manually. Should the breaker
open for any reason, excitation current flow to the
Rotor is lost. The unit’s AC output voltage will then
drop to a value equal to the Rotor's residual magnet-
ism (about 7-12 VAC).
The excitation circuit breaker (CB2) is self-resetting
and cannot be reset manually. Should the breaker
open for any reason, excitation current flow to the
Rotor is lost. The unit’s AC output voltage will then
drop to a value equal to the Rotor's residual magnet-
ism (about 7-12 VAC).
DPE WINDING
VOLTAGE
REGULATOR
POWER WINDING
ELECTRONIC
0F
FIELD
CB2
0K
2
2A
22S
4
6
4
11S
BATTERY CHARGE WINDING
TO BATTERY
TO ENGINE
CONTROLLER
CIRCUIT BOARD
0N
R1
55
15
77
BCR
66
66
BCR = Battery Charge Rectifier
R1 =
R1 =
One Ohm, 25 Watt Resistor
BRUSHES
2
6
11
11
22
22
33
44
66
55
77
Leads 2 & 6 =Stator Excitation Winding
Leads 11 & 22 = Voltage Sensing Leads
Leads 11 & 22, 33 & 44 = AC Power Windings
Leads 55, 66, 77 = Battery Charge Windings
Leads 11 & 22 = Voltage Sensing Leads
Leads 11 & 22, 33 & 44 = AC Power Windings
Leads 55, 66, 77 = Battery Charge Windings
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