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I-Modell - 13/14 - Ausgabe 08/13 - 2354644 - BUE-0056-07EN
Electrical system
8
8.2
Terms
Off-load voltage
The off-load voltage is the voltage of the battery in idle condition, i. e. no cur-
rent is consumed and the battery is not being charged.
Closed circuit current
Some electrical appliances, such as the clock and the indicator lamps, require
continuous electric current, for this reason they are referred to as inactive
appliances. This closed circuit current flows even if the device has been
switched off.
Total discharge
Total discharge of the battery is imminent, if a battery is completely discharged
by an active appliance and by closed circuit current and the off-load voltage
falls below 12 V.
Capacity
Capacity refers to the amount of electricity which can be stored in a battery.
The capacity of a battery is given in ampere hours (Ah). The so-called
K20 value is normally used.
The K20 value indicates how much current a battery is able to dispense over
a time period of 20 hours without causing damage, or how much current is
required to charge a flat battery within 20 hours.
For example, if a battery can dispense 4 amps for 20 hours, then it has a
capacity of 4 A x 20 h = 80 Ah.
If more current flows, the capacity of the battery reduces proportionately.
External influences, such as temperature and age may alter the storage
capacity of the battery. Capacity details refer to new batteries operating at
room temperature.
Z
The battery must remain idle for a while before measuring. After charging
the last time, or after the last current has been drained by consumers, wait
approximately 2 hours before measuring the idle voltage.
Z
Total discharge damages the battery.
Z
Depending on battery technology, capacity details have a conversion factor
of 1.3 to 1.7, which lowers the real capacity by this value.
Содержание I 690 G
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Страница 8: ...Contents 8 I Modell 13 14 Ausgabe 08 13 2354644 BUE 0056 07EN ...
Страница 18: ...18 I Modell 13 14 Ausgabe 08 13 2354644 BUE 0056 07EN Safety 2 ...
Страница 120: ...120 I Modell 13 14 Ausgabe 08 13 2354644 BUE 0056 07EN Gas system 7 ...
Страница 164: ...164 I Modell 13 14 Ausgabe 08 13 2354644 BUE 0056 07EN Electrical system 8 Fig 177 Circuit diagram interior EBL 220 ...
Страница 254: ...254 I Modell 13 14 Ausgabe 08 13 2354644 BUE 0056 07EN Wheels and tyres 13 ...
Страница 268: ...268 I Modell 13 14 Ausgabe 08 13 2354644 BUE 0056 07EN Troubleshooting 14 ...
Страница 272: ...272 I Modell 13 14 Ausgabe 08 13 2354644 BUE 0056 07EN Special equipment 15 ...
Страница 290: ...290 I Modell 13 14 Ausgabe 08 13 2354644 BUE 0056 07EN Helpful notes 17 ...