Timeline for Logging 3-phase power
Current License: CC BY-SA 3.0
11 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| May 22, 2017 at 16:38 | comment | added | user7559326 | I researched power meter datalogger before. I found ICP power meter can log power data, single phase or three phase into computer database. They have different protocols to choose from like CAN, modbus. Hope it helps. https://www.icpdas-usa.com/intelligentpowermetersboards.html | |
| May 16, 2017 at 7:24 | answer | added | Jeroen3 | timeline score: 1 | |
| May 16, 2017 at 0:31 | comment | added | rdtsc | Use three current transformers to get a nearly lossless and isolated current measurement on each phase. | |
| May 15, 2017 at 23:42 | answer | added | D.A.S. | timeline score: 0 | |
| May 15, 2017 at 23:20 | comment | added | D.A.S. | but if V is reasonably constant over say 10 cycles then you can compute Rms V and I separately but you must measure the RMS phase difference to extract real power from apparent power. So you see a true RMS meter from Fluke is much better. To my knowledge DATAQ has no builtin way to compute V*I(t) real power only Vrms. | |
| May 15, 2017 at 22:13 | comment | added | D.A.S. | RMS power requires that each V*I is done in real time or filtered and sampled subcycle time then averaged between readings. | |
| May 15, 2017 at 22:01 | comment | added | carloc | @brhans I'm afraid power value samples need to be averaged not RMS'ed. | |
| May 15, 2017 at 21:01 | comment | added | brhans | Multiplying Vrms with Irms does not give you power in Watts - it gives you apparent power in VA. For each sample period you need to multiply the V and I samples to get a power value and then rms that. | |
| May 15, 2017 at 20:21 | comment | added | user3528438 | No. Power is not calculated by multiplying voltage with current. Also your current sensing resistor wastes way too much energy. Why not just buy a logger that logs power directly, or a power meter and a logger and connect them together? | |
| May 15, 2017 at 20:19 | review | First posts | |||
| May 15, 2017 at 20:24 | |||||
| May 15, 2017 at 20:14 | history | asked | user149169 | CC BY-SA 3.0 |