Problem 3 - High AC Voltage
Usage:
Procedure A - Check Engine RPM (Frequency)
Procedure B - Adjust Voltage Level
The voltage level adjustment range must be within +10 to -25% of rated voltage.
- * If the voltage level cannot be adjusted as described:
a. Check accuracy of voltmeter.
b. Go to Procedure C.
Procedure C - Check Fuses Located On Regulator
- * If fuse(s) have failed:
Look for possible short circuits that could cause fuse failure such as shorted exciter stator L1, etc.
- * If fuse(s) are okay:
Go to Procedure D.
- * If fuse(s) are okay:
Procedure D - Check Connections To Regulator
- * If connections are correct:
Go to Procedure E.
Procedure E - Isolate Attachments
Disconnect attachments such as manual voltage control, etc. Operate at rated rpm.
NOTE: If remote mounted voltage adjustment is disconnected, connect jumper across terminals 4 and 7.
- * If generator output voltage is normal:
Check attachments.
- * If voltage cannot be adjusted to rated voltage at rated frequency:
a. Replace regulator.
b. Bench test the regulator; see Bench Test.
- * If voltage cannot be adjusted to rated voltage at rated frequency:
Caterpillar Information System:
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