Bedienungsanleitung Graupner ULTRA TRIO PLUS 16 - 6469 (Seite 44 von 107) (Deutsch, Englisch, Französisch, Italienisch)

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Pb manual program

In this program you can set the maximum permissible charge

current using the INC / DEC buttons, but only before you

connect the lead-acid battery for charging.

This setting only determines the top limit which the charger is

permitted to feed to the battery.

If the battery manufacturer states a low maximum charge current, then it is important to limit the charge

current to that value to avoid the charger setting a higher current if the battery appears to be willing

to accept charge.

The battery can then be connected to the charger and the charge process started: the unit starts

charging at 0.00 A and slowly raises the current until it reaches the set limit.

The charger constantly assesses the state of the battery during the charge process, and adjusts the

charge current to suit its condition.

The charge program automatically determines the number of cells (cell count) in the battery by measu-

ring its overall voltage.

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

P b - C :

2 . 5 A

DECINC

14. Pb (lead-acid) programs (Output 1)

This program is designed for charging and discharging lead / sulphuric acid and lead / gel batteries with

nominal voltages of exactly 2, 4, 6 and 12 V (1, 2, 3 and 6 cells).

Caution: the charger will not recognize lead-acid batteries with other nominal voltages, and such bat-

teries must not be connected to it.

Lead-acid batteries behave entirely differently to Ni-Cd and Ni-MH batteries. Lead-acid batteries can

only deliver relatively low currents relative to their capacity, and similar restrictions very deﬁ nitely apply

to charging. Manufacturers usually state 14 to 16 hours for achieving nominal capacity when rechar-

ging at the normal charge current. The „normal“ charge current is deﬁ ned as one tenth of the battery’s

nominal capacity. Example: battery capacity = 12 Ah —> normal charge current = 1.2 A. In contrast

to Ni-Cd and Ni-MH batteries, lead-acid chargers generally monitor the battery’s voltage in order to

determine when it is fully charged.

Caution: lead-acid batteries cannot and must not be fast-charged! Always select the charge

current which the battery manufacturer recommends. Please also bear in mind that the nominal

capacity (i.e. useful life) of a lead-acid battery is very quickly compromised by incorrect handling, in-

cluding overcharging, repeated 100% discharges and, in particular, deep discharging. The magnitude

of the charge / discharge currents is also crucial to the actual battery capacity which can be exploited,

i.e. the higher the current, the lower the capacity which the battery can deliver.

The values selected in the user settings for charge termination delay and safety timer have no effect

in the Pb charge programs.

MANUAL-

program

discharge

program

MODE MODE

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

P b m a n u a l

2 sec.

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