5-12
Table 5-3. Troubleshooting Chart - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
7. POOR VOLTAGE STABILITY - Continued.
Step 2. Verify that voltage does not fluctuate to the point when K1 either energizes or de-
energizes.
If this condition occurs, refer to MALFUNCTION 2.
If this condition does not exist, proceed to step 3.
Step 3. Verify that the sensing voltage and input power are not taken from the same power
isolation transformer secondary.
If the above condition exists, reconnect sensing to a separate source.
If the above condition does not exist, proceed to step 4.
Step 4. Verify that R4 is not maladjusted.
If R4 is maladjusted, adjust R4 to proper setting.
If R4 is not maladjusted, proceed to step 5.
Step 5. Verify that the no-load field voltage is at rated.
If the no-load field voltage is below rated, refer to paragraph 3-2c,
If the no-load field voltage is at rated, proceed to step 6.
Step 7. Check for fault in either exciter or generator.
If a fault exists, correct fault condition.
If a fault does not exist, proceed to step 8.
Step 8. If the above steps fail to correct the malfunction, replace or repair the voltage regulator
as necessary.
8. VOLTAGE RECOVER SLOW WITH LOAD CHANGE.
Step 1. Verify that the correct regulator is being used for the application.
If the incorrect regulator is being used, contact Basler Electric.
If the correct regulator is being used, proceed to step 2.
Step 2. Verify that R4 is not maladjusted.
If R4 is maladjusted, adjust R4 to proper setting.
If R4 is not maladjusted, proceed to step 3.