NTDC Internship Day 9:
Today's session focused on the Annunciation Unit installed in the Control Room, which indicates faults in our equipment. The unit displays yellow lights for less severe abnormalities and red lights for severe ones. However, its purpose is solely to indicate the type of fault, unlike relays, which sense faults and trigger circuit breakers to isolate them.
We also discussed the importance of maintaining the SF6 pressure at 6.5 bar. If the pressure drops to 5.8 bar, an alarm sounds, and filling or setting it is not possible to avoid lockout. This safety feature prevents operating the circuit breaker at low pressure, which could lead to a blast.
Additionally, I attached a picture of the Power Analyzer, which provides various readings, including MVAR, MW, and power factor, in a single meter.
We also covered different types of relays, such as:
1. Overcurrent/Earth fault relay
2. Distance Relay
3. Underfrequency Relay
Feel free to ask questions or clarify any doubts in the comments section or via private message. I'll continue to share my internship experiences and lecture notes, hoping to help students pursuing Electrical (Power) Engineering.
#NTDC #Internship #ElectricalEngineering #PowerEngineering #AnnunciationUnit #SF6Pressure #PowerAnalyzer #Relays
President, Vertical Incorporated
2moCongratulations Alex. You're joining an amazing group of talented people.