How 's the kWh calculation going?

[gelezayka]

How 's the kWh calculation going?

How many measurements take place per hour?

And in general it is interesting for how much ms get full data on current?

Just I made an almost similar device, but I use MCP3208CI/SL there and all rms calculate in code, more than 40 current sensors do not get to use to withstand 3200 measurements per hour.

Thanks.

[crjens]

Power calculations are performed by the CS5463/5490 IC's. By default the chip samples the incoming current and voltage waveforms for 1 second (at a rate of 4000 samples/sec) and then does the power calculations. It can be configured to use fewer total samples at the expense of potentially reduced accuracy. Details on the chips are here: CS5463, CS5490