Power Hour 2021-07-28 | Power measurement | Wattmeters | Measuring power | Balance | Common wiring errors

Webinars

0:02:52 Single-phase AC power in the time domain.
0:06:52 Perpendicular nature of reactive power analogy.
0:08:39 Phasors to distinguish watts from VARs.
0:10:55 Perpendicular nature of reactive power w/vectors.
0:13:03 1-phase wattmeter, context of the term “element”.
0:16:02 3-element meter: 3-phase wye, in balance or not.
0:18:32 2.5-element meter: 3-phase wye, in balance.
0:24:20 2-element meter: 3-phase delta in balance or not.
0:33:20 2-element meter: 3-phase wye in balance?
0:35:05 Phasors to illustrate the 2-wattmeter method.
0:40:15 2-element meter: 1-phase 120/240V Station Power.
0:43:33 Common wiring errors – Background.
0:46:08 Wiring errors: Reverse polarity on 3-element.
0:54:44 Wiring errors: Rolled phases on 3-element.
1:01:14 2-element wiring errors are trickier to diagnose.
1:02:05 Wiring errors: Reverse polarity on 2-element.
1:07:22 Wiring errors: Rolled phases on 2-element.
1:08:30 Closing remarks.