ABB Zenith ZTG 30 Operation, Maintenance And Installation Manual page 29

29
No source priority (generator and load shed usage disabled)
Switch position I
Switch position O
Switch position II
SOURCE 1 OK
SOURCE 2 OK
Pre-transfer signal
Override momentary S1 outage delay
Transfer from S1 to S2 delay
Override momentary S2 outage delay
Transfer from S2 to S1 delay
Center-off delay, I - O - II
Pre-transfer S1 to S2 delay
Post-transfer S1 to S2 delay
Pre-transfer S2 to S1 delay
Post-transfer S2 to S1 delay
—
Table 2.5 Automatic Switching Sequences, No Source Priority (Generator and load shed usage disabled)