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12-21-2007, 6:59 AM nvl Joined on 07-12-2007 Posts 17 Watt hour meter with PAC controllers I am using R1 controller with RMS modules to measure AC voltage & AC current. From that, I calculate Power = V x I Then, I make an Integral chart to calculate Watt-hour. It integrates the power in 01 second interval, and can not be shorter. Will we get accurate watt-hour value from this method? Any body tried this before? How can we get integrate in shorter < 1 second interval? Please help me. Thanks. NVL.    Report

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