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HAT553V ATS Controller User Manual Page 22 of 32
10.2.1
AUTO TRANS./RESTORE
When Auto Trans./Restore is set, A power is master; if A power is normal, then A power closes; if A
power is abnormal, B power is normal, then A power opens, B power closes; if A power recovers normal,
then B power opens, A power closes.
Fig. 2 Auto Trans./Restore Flow Chart