DC to DC converter faulty

Another fault notification this morning, I had the opportunity to join the investigation. I followed Mr. Sabrin and Mr. Muzammil to the field. After some investigation, they discovered that the DC to DC converter had some problem. Action to be taken is to replace the converter with a new one. Maybe you will asked, what is the effect of this fault? Actually, there are two DC to DC converters which backup for each other, therefore, even one of the converters doesn’t function, the other one will take over, so, there doesn’t affect the system. This is actually the protection design in this plant.


Performing this job actually needs to be very careful since a single mistake can cause huge unwanted effect like tripping the system. Therefore, there are many precaution procedure need to be taken. Firstly, before performing the task, the particular circuit breaker needs to be disconnected to make sure there are no supplied to the converter, reconfirm which wire to be unplugged and so on.

From the experience today, I realize the important of hardware drawings and software drawings which store in the tick files in library. Finally, I got the opportunity to deal with it, and hopefully I can learn more details in the future.