Westerbeke 9.0 BCG Technical Manual page 210

2. Diodes 8 - 9.5 Ohm (approximate)
using a 260 Simpson Analog Meter
To check the diode, unsolder the connection from the
top of the diode. Place one ohmmeter lead on the con-
nection at the top of the diode and the other ohmmeter
lead to the diode's base. Then reverse the position of
the ohmmeter leads.
A low resistance should be found with the leads in one
direction, and infinite resistance (blocking) in the other
direction.
Diode Rating:
1600 Volts
26 Amps
r
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m
VJ
en
>
z
n
m
DIODE
The diode's rating is far in excess of the circuit's requirements. Most likely a diode failure will result from an
overspeed or load surge. A diode failure would be attributed to a manufacturing defect.
B. Main Stator Windings
BCG 4.0KW: 0.6 Ohm
BCD 4.4KW: 0.6 Ohm
BCG6.5KW:
BCG6.0KW:
0.4 Ohm
0.4 Ohm
To check main stator winding values at the AC terminal block, first remove all AC output leads, the
ground connection, and all and brass interconnects from the terminals on the block. This will isolate
the 6 leads on the terminal block which make up the two main stator groups.
,-------------------,
I
1
- - - - - - - - 0 2
------~n3
- - - - - - - - 0 4
- - - - - - - - 0 5
I
6
I
L. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ..J
Westerbeke Generators 204
NOTE: The numbered leads on
the terminal block are not in
any numerical order. They are
as shown below.
1
o
5
o
4
o
2
o
3
o
6
o
TERMINAL BLOCK