The function of the back-feed protection card is that when the energy back-feed occurs in the main circuit or the bypass, the back-feed protection card sends a drive alarm signal, and the drive trip switch (configured by the customer) is disconnected, which plays the role of back-feed protection.

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The function of the back-feed protection card is that when the energy back-feed occurs in the main circuit or the bypass, the back-feed protection card sends a drive alarm signal, and the drive trip…

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