HAT828 High Speed ATS Controller User Manual Page 42 of 56
11
SWITCH OPERATION
11.1
SYNCHRONOUS TRANSFER DESCRIPTION
Synchronous close refers to current loading power supply transfers to the other power supply
with load, in the case of S1, S2 power are normal (meet the synchronous voltage difference,
frequency difference, phase difference) or power supply abnormal (meet frequency difference, phase
difference). Synchronous transfer is required in this process.
Sync. Transfer Enable:
When it is enabled, sync. transfer function is active; otherwise, it is
inactive.
Sync. Volt. Difference (the average value difference of 2-way voltage):
Max. voltage difference
of S1 and S2 when synchronization. If sync. voltage difference is disabled or one power is abnormal,
no voltage difference detection during synchronization.
Sync. Freq. Difference:
Max. frequency difference of S1 and S2 when synchronization.
Sync. Phase Difference:
Max. phase difference of S1 and S2 when synchronization. Generally, it
cannot be set too high, otherwise load impact is too large during transfer.
Sync. Failure Alarm Action:
Can be set as warn alarm or fault alarm. It still waits for
synchronization when failure until switch is closed. When warn alarm occurs, the alarm will be cleared
when synchronization is finished or exited. When fault alarm occurs, press alarm reset key to clear
the alarm.
Sync. Failure Delay:
Synchronous waiting time. “Sync. Failure” alarm will be initiated when
overtime.
Power Abnormal Transfer Mode:
Can be set as sync. transfer or forced transfer. When “Sync.
Transfer” is enabled, loading power will transfer in over/under voltage, loss of phase, not transfer in
over/under frequency, reverse phase sequence. When “Forced Transfer” is enabled, ATS directly
transfers to normal power side when loading power is abnormal without synchronous detection.
11.2
MANUAL OPERATION
Manual mode is selected by pressing the
key; a LED beside it will illuminate to confirm
the operation.
ATS will start to transfer immediately after pressing the corresponding key. During the process,
corresponding lamps will flash, and then the lamp will be normally illuminated when switch is done.
Operation logic in manual mode is as below:
