Westerbeke 9.0 BCG Technical Manual page 199

D.
COMPOUND TRANSFORMER
1 & 2. - Compound Transformer Windings: .019 - .021 ohm
Group 1 measured between Lead #10 at the AC terminal block and Lead #4 at the junction box. Lift both
leads along with lead #9 at the terminal block.
Group 2 measured between Lead #8 at the AC terminal block and Lead #1 at the junction block. Lift both
leads along with lead #7 at the terminal block.
3. Transformer Auxiliary Windings: 4.0 - 4.5 ohm.
A. Serial # 1001 -1040: These very early model units transformer auxiliary winding's resistance value is
measured between the black and white wire, lifted from the AC terminal block, and the red and white
striped wire at the regulator plug. To totally isolate these windings for the above measurement, lift also
from the AC terminal block the green and white-striped wire.
B. Serial # 1041 and up: A three connection terminal strip was added to this circuit located just below the
AC terminal block at the lower left. Isolate the three numbered #1, #2, and #3 red and white-striped
wires coming onto each of the three terminals. Lift the black and white and green and white leads off
their connections on the AC terminal block. Measure the resistance value between the #1 red and white
lead lifted from the terminal strip and the black and white lead lifted from the AC terminal block.
NOTE: The addition of the three connection terminal strip is for the increase or decrease of
full-load voltage output. Should full-load voltage fall below 108 volts, selecting X, Y, or Z ter-
minal strip lead to connect the lead (red and white) that is routed to the regulator plug and the
exciter circuit, will supply a higher AC voltage to the exciter circuit during full-load conditions,
bringing the output voltage of the generator up.
No-load voltage should be properly adjusted by shimming the compound transformer: 121-
124 volts at 61.5 - 62.0 hertz. Note that the above should not be used as a means of compen-
sating for incorrectly adjusting the generator's no-load Voltage.
Red/White
Red/White
#l
Red/White
12
113
MAX MID LOW
0
0
0
[Xl [Yl
(Z)
Red/White
193 Westerbeke Generators