Generac Power Systems PWRcell Reference Manual page 57

Section 8 PWRcell ATS
Utility Restored, Transferring Back to Utility – Inverter Only Configuration
When all of the conditions are met, the inverter lifts the ground from Wire 23 and the transfer relay (TR) de-energizes.
The TR contacts change states – opening E2A from 205, and closing N1A to 126.
Utility voltage is applied to the bridge rectifier and the coil. The closing coil energizes and pulls the switch to the
UTILITY position, which opens the contacts from INVERTER to LOAD and closes the contacts from UTILITY to LOAD.
013091
Figure 8-12. Utility Restored, Transferring Back to Utility
Diagnostic Repair Manual 53