Bosch WPG 012.00, Operating Instructions Manual

Page: 10 / 24

10
4.1 Test program
A B C
Test Connection OK Defective
Power diodes
– Fitted and connected –
Positive diodes B+ – M1
B+ – M2
B+ – M3
Negative diodes D– – M1
D– – M2
D– – M3
Exciter diodes D+ – M1
– Fitted and connected – D+ – M2
D+ – M3
Resistance M1 – M2
0,5
Ω
of stator winding M2 – M3
M3 – M1
2
Ω
Resistance
of rotor winding
20
Ω
Individual diodes
Test
1
:
Forward direction
1mA Test
2
:
Reverse direction
496 104
M3
M2
M1