Generac Power Systems 5412 사용자 설명서
Section 2
MAJOR GENERATOR COMPONENTS
Leads 2 & 6 = Stator Excitation Winding
Leads 11S & 22S = Voltage Sensing Leads
Leads 11 & 22, 33 & 44 = AC Power Windings
Leads 11S & 22S = Voltage Sensing Leads
Leads 11 & 22, 33 & 44 = AC Power Windings
Stator
2
6
11
22
33
44
11S
22S
Figure 2-2. – Stator Output Leads
BRUSH HOLdER
The brush holder is retained in the rear bearing car-
rier 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.
BRUSHES
Figure 2-3. – Brush Holder
ExCITATION CIRCUIT COMPONENTS
GENERAL:
During operation, the Rotor’s magnetic field induces
During operation, the Rotor’s magnetic field induces
a voltage and current flow into the Stator excitation
winding. This results in AC output delivered to a volt-
age regulator via Wires 2 and 6.
REGULATOR
VOLTAGE
2
2
0
6
22S
4
11S
22S
11S
6
0
4
22S
11S
BA
DPE WINDING
6
2
4
0
FIELD
0
+
-
Figure 2-5. – Schematic: Excitation Circuit
VOLTAGE REGULATOR:
Six (6) leads are connected to the voltage regulator
Six (6) leads are connected to the voltage regulator
as follows:
• Two (2) SENSING leads deliver ACTUAL AC output
• Two (2) SENSING leads deliver ACTUAL AC output
voltage signals to the regulator. These are Wires
11S and 22S.
• Two (2) leads (Wires 4 and 0) deliver the regulated
direct current to the Rotor, via brushes and slip
rings.
• Two (2) leads (Wires 6 and 2) deliver Stator excita-
tion winding AC output to the regulator.
VOLTAGE
ADjUST POT
LED
6
0
2
4
22S
11S
Figure 2-7. – Voltage Regulator
The regulator mounts a “VOLTAGE ADjUST”
potentiometer, used for adjustment of the pre-set
REFERENCE voltage. A lamp (LED) will turn on to
indicate that SENSING voltage is available to the
regulator and that the regulator is turned on.
ADjUSTMENT PROCEDURE:
With the frequency set at 60 Hertz and no load on the
With the frequency set at 60 Hertz and no load on the
generator, slowly turn the voltage adjust pot on the volt-
age regulator until 122-126 VAC is measured. If voltage is
not adjustable, proceed to Section 6 – Troubleshooting.
Page 9