Chroma 66203, User Manual

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Digital Power Meter 66203/66204 User’s Manual
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Figure 4-69 1P2W Wiring Diagram
4.7.2 Selecting 1P3W Wiring Mode
Single phase 3-wire power is the most frequent seen application for residential electricity.
The L1-L2 is for the household appliance with larger capacity and the L1-N and L2-N voltage
is for the household appliance with smaller capacity in phase. Figure 4-70 uses two power
meters to measure the single phase 3-wire power. The total power is the sum of two power
meters.
Figure 4-70 1P3W Wiring Diagram
4.7.3 Selecting 3P3W Wiring Mode, Two-Wattmeter
Method
Taking the example of Y connection 3-phase power measurement, it usually uses 3 power
meters to grab the individual
instantaneous power of 3 phases simultaneously and calculate
the average power of each phase and then sum up to get the total power.