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ETV 1591-H
CONTROL PANEL
Page 30
24.03.2015
5.6.2
Measuring
In the image 2 diagram, an ETV 1591-H is continuously powered with 24 V and the charg-
ing cycle is thereby recorded.
The cycles correspond to the time specifications.
Image 2
1
Start of 24 h charging by turning on the main supply
2
24 h battery charging
3
24 h charging ended
4
24 h charging stop
5
Start of 8 h charging after 24 hour charging stop (pulsed charging)
Orange curve
– battery voltage
While the battery is charging (2): The curve corresponds to the charging voltage in the
battery
The battery voltage is constant as soon as the battery is full.
During the charge stop (4): the curve corresponds to the open circuit voltage of the
battery Due to the battery cell characteristics, the battery voltage without charging cur-
rent is produced (chemical and thermal response).