IB140012EN For more information visit: www.eaton.comInstructional BookletEffective: March 2021 Page 47Operation and Maintenance Manual,Automatic Transfer Switch Controller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³(QJLQH6WDUW´VLJQDOGHDFWXDWHJHQVWDUWUHOD\6HQG³(QJLQH6WDUW´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³QHXWUDO´ SRVLWLRQNote: There are options for closed transition such as Closed Transition and Closed Transition to Load Decay or Time Delay Neutral.There is settable input (Closed Transition Inhibit) that if closed, will inhibit closed transition and switch to the open type.There is an output contact (Waiting for Sync) that will close when Closed or In-Phase transition is synchronizing
