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Schematic Review of ADE7758 for Star(Y) and Delta Connection

Thread Summary

The user inquires about the behavior of a Delta 3-phase, 3-wire 600V system when phase B voltage is applied to the neutral, with a CT ratio of 500:5. The final answer directs the user to a related thread for ESD protection of the ADC in the ADE7758, advising against posting the same issue in multiple places.
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Category: Hardware
Product Number: ADE7758

Hello, I would like experts to review my schematic for a Star (Y) 3-phase 4-wire and Delta (3-phase 3-wire) 600V system.

The line-to-line voltage for the Delta 3-phase, 3-wire configuration is 600V, and my current transformer (CT) ratio is 500:5.
My main concern is regarding the Delta configuration: if we apply the phase B voltage to the neutral, what will be the behavior of the system on my board following this schematic?







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[edited by: AHTISHAM at 6:18 AM (GMT -4) on 27 Oct 2025]
[locked by: jnaso at 4:08 PM (GMT -4) on 27 Oct 2025]
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