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4.5 Battery operation – standby period.
The current collected from the PSU during the battery operation shall be limited in order to retain
the standby period.
Data for 65Ah/12V SLA battery:
- for class 1 (8h) Id current= 5,0A (where Id=5A, Td=10h)
- for class 2 (15h) Id current=3,4A
QAKU = 1.25*[(Id + Iz)*Td] – basic formula
where:
QAKU – battery capacity [Ah]
1.25 – ratio including decrease of battery capacity due to aging process
Id – current collected by loads during inspection period [A]
Iz – current collected for PSU internal load [A]
Td – required inspection period [h]
