Electrical

Question 1

APD?

Answer 1

Automatic Parallel Device

• Within 30* of Phase Angle (15* each direction).
• Within 0.2 of 60 Hz.
• Within 0.5V.

Question 2

What is Dead Bus Logics?

Answer 2

When power from GTGs drops to 350v, standby generator is automatically started. STBY GTG is not put in parallel until done so by watchstander.