Generac Power Systems 5412 사용자 설명서

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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
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 
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 
as follows:
•  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 
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.
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