5-31
Accessory Troubleshooting
TP-5672 11/95
NOTE: The ammeter reads load currents. The source
selector switch must be in the NORM. NA-NB L1
position to read the load current.
Yes
No
No
Yes
Yes
No
Yes
Is the current between terminals
12 and 21 of the source selector
switch correct? Refer to
Figure 5-35 for the proper turn
ratio of the current transformer.
Is the current between terminals 11 and
21 of the source selector switch correct?
Refer to Figure 5-35 for the proper turn
ratio of the current transformer.
Are the leads from the current
transformer to the source selector
switch open or shorted?
Is the current between the terminal
of the ammeter correct? Refer to
Figure 5-35 for the proper turn ratio
of the current transformer.
Replace the source
selector switch.
Replace the leads from
the source selector
switch to the ammeter.
Replace the ammeter.
Replace the current
transformers.
Replace the leads from
the current transformer to
the source selector switch.
Figure 5-37. Troubleshooting— Option DD-18-J, Ammeter is not functioning
