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HAT552/HAT553 DUAL POWER ATS CONTROLLER USER MANUAL
HAT552/HAT553 ATS Controller 2020-05-14 Version 1.1 Page 24 of 35
11.2.2
AUTO TRANS./NON RESTORE (ACTIVE FOR MUTUAL BACKUP)
When Auto Trans./Non Restore is set, and Mutual Backup is active, 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, and B
power closes; If A power recovers normal, B power is normal, then switch keeps at B power close status.
Fig. 4 Auto Trans./Restore (Active for Mutual Backup) Flow Chart