What is the purpose of having a neutral channel in ADE7868 andADE7878?
The main advantages of having a neutral channel are for detecting tamper situations and in providing a balanced current measurement scheme. With a neutral channel, any load imbalance can be easily dealt with, as the neutral channel carries the difference current.
The current that flows through the neutral channel is the sum of the phase currents. So, when the neutral current is zero, it indicates that the loads are balanced among the phases.
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