What kind of power system information should be acquired before measuring or analyzing the power quality of the power system?A)Check the power system circuit distribution:
a)What is the transformer capacity?
b)How is wiring installed? (Ex: Y connection, D-delta connection, 3phase/4 wire, 3phase/3wire)
c)Where is the phase lead capacitor installed in the power system?
B)Check the equipment loading:
a)What is the system load? (Ex: light-duty or heavy-duty)
b)What is the load of the equipment that causes harmonics? (Ex: The harmonic source may come from inverters, electric arc equipment, electric soldering, UPSs, or other sources.)
c)Evaluate the system characteristics.
