All options in "System Event" are checked in Policies: "Configure System Alert" page.
Backup power supply got disconnected and after a few minutes it was reconnected.
There was no Power Module Failure alert sent in email nor in SNMP.
SWG is working as designed. All hardware alerts are sent at 7:36 am. If for example the backup power supply is disconnected at this time, alert will be sent at 07:36 am. Here's an example of the power module failure alert.
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