GE Zenith Controls' ZTGD Series switches are built for delayed transition applications that require the dependability and ease of operation found in a power contactor switch. The delayed transition switch offers an adjustable time delay during transfer from one position to another. This is primarily for transfer of large motor or inductive loads, and allows these loads to re-energize after transfer with only normal inrush starting currents. The ZTGD Series incorporates all the important features of the standard ZTG Series in a unique design. The operation of the delayed transfer switch is totally independent of the synchronism of the power sources, eliminating the need for in-phase monitors or extensive motor disconnect control wiring between the transfer switch and motor control centers.
