Diode Failure Detector
The STAMFORD Diode Failure Detector (DFD) senses ripple current in the exciter output caused by diode failure in short or open circuit, and switches an internal relay if it persists for 7 seconds.
The changeover contacts of the relay can be wired to provide a warning indication of diode failure or initiate an automatic shutdown.
Where the DFD triggers a warning, monitor the exciter field current or voltage and reduce load as necessary, so that the generator set can continue to run until a planned controlled shutdown to replace the diode.
Key features include:
- Robust and reliable solid-state electronics
- Built-in test function
- Selectable power supply
Simple connection to the alternator.
