Hey so I am building a three phase voltage measurement circuit . I could measure three phase voltage using ZMPT101B module. Now I do know that zmpt101b is for single phase and max voltage of 250V on the module . Here we have 220V between L1 and Neutral and 420V between L1 and L2. So I would be conn…

So a 3 phase why. So if you want to know the voltage I would use 3 ZMPT 101B transformers all Line to Neutral. Should this be a commercial application I would go with a commercial voltage transducer like this or similar . When measuring AC voltages you have a choice. Average Responding RMS Indicatin…

Three phase Voltage measurement using zmpt101b

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jim-p April 10, 2024, 6:00pm 4

The transformer is good for 1000V, so there are other reasons why the module is limited to 250V. Simply changing resistors might be dangerous.

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Three phase Voltage measurement using zmpt101b

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