Figure 3.
Rotor, ohmmeter.
Figure 2.
Rotor, operational.
5. STATOR CHECKS. Checks on the stator should be made with all diodes
disconnected from the stator. It is not practical to check the stator for shorts
due to the very low resistance of the windings. Also, it is not practical to check
the delta stator for opens because the windings are connected in parallel.
a. To check the Y-connected stator for opens, connect an ohmmeter or test
light across any two pairs of terminals. A high ohmmeter reading, or no light,
will reveal an open winding (fig 4).
Figure 4.
Y stator.
OS 010, 2-P4