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www.power-tronics.com
Call Us at:
(830) 895-4700
Application Troubleshooting
Problem:
Possible Cause
No Voltage
1 3 5 7 9 11 13 15 20
Pulsating Voltage
4 5 6 12 16 21 22
Flickering Voltage
4 6 7 14 21 22
High Voltage
6 7 8 9 12 13 17 18 20 22
Voltage Drop on Load
5 8 10 12 16
Low Voltage
5 8 12 13 21
Poor Voltage Regulation
2 4 10 12 13 16 22
No Voltage Control
13 19 20 21 22
Possible Causes:
1. Residual input voltage to the voltage regulator is below 3.5vac or fuses are open in the regulator.
2. Unbalanced generator load.
3. Open exciter field or defective generator.
4. Non linear (Inverter) load or defective connection in exciter field.
5. Open diode in exciter or shorted rotor in generator.
6. Loose or failed component in voltage regulator.
7. Loose wiring connections.
8. Input voltage to regulator is too low.
9. Exciter field is grounded.
10. Non linear (Inverter) load or wrong selection for regulator hookup.
11. Exciter fields are reversed.
12. Wrong selection of regulator wiring configuration.
13. Defective voltage regulator.
14. SCR or Inverter drive effecting generator waveform.
15. Regulator needs external flashing circuit (Contact Power-Tronics for Assistance).
16. Isolation transformer is too small.
17. Isolation transformer is needed.
18. Exciter fields are not isolated from other circuits.
19. Input and field circuit are being fed by a common cable or conduit.
20. Incorrect hookup or wiring.
21. No jumper or potentiometer installed on terminals R1 and R2.
22. Field Varistor not installed across field on Brush-Type generator.
