Service manual

3. Electrical Parts
3-9
3.2.4 AVR (Automatic voltage regulator)
SDG25S-6A7,SDG45S−150S-6A6(AVR model : DST-100-2FA/2FA4)
SG06019
Name Function
(1) V. F. ADJ V/Hz adjust variable resistor
(2) VOLT. ADJ Voltage setting variable resistor
(3) STAB. ADJ Stability adjust variable resistor
(4) CPR Over-excitation protection circuit protector
(5) Time constant, ADJ Time constant adjustment
AVR CONNECTOR
Line color Connection Remarks
1 Brown Hand trimmer
2 Red Hand trimmer
Variable resistor 2k
Ω
5W
3 Orange NIL
4 Yellow No.5 of connector 6P
5 Green No.4 of connector 6P
To get corner frequency 57Hz, No.5
connector 6P and No.4 connector 6P short
circuited
6 pins
(female)
6 NIL
1 Brown Generator cable No.3
2 Red Generator cable No.4
AVR power supply (Generator cable No.3
& No.4)
3 Orange Generator cable E3
Detect generator output voltage between
generator cable No.3 and E3
4 Yellow Generator cable J Field winding of exciter
5 Green Generator cable K Field winding of exciter
6 NIL
7 Purple Generator cable U Auxiliary winding
8 Gray Generator cable V Auxiliary winding
9 pins
(female)
9 NIL
(
1
)
(
2
)
(
3
)
(
4
)
(
5
)
9 Pin(female) 6 Pin(female)
1:Brown 4:Yellow 7:Purple 1:Brown 4:Yellow
2:Red 5:Green 8:Gray 2:Red 5:Green
3:Orange
6: ／ 9: ／
3:Orange
6: ／