STUDER INNOTEC
HP-COMPACT
HP-COMPACT
V5.4
18/80
4.6 The battery charger
4.6.1 Cycle of charge
The full automatic HP-COMPACT Battery Charger is adjusted at the factory so that
most lead-acid and lead-gel batteries can be charged to the maximum. As soon as
the minimum alternating voltage for the AC IN set on the Turning Knob 23 is available
at the input (LED 1 AC IN is lit), the Battery Charger is switched on automatically
(LED 2 CHARGER is lit). The battery is fully automatically charged matching to the
charge level, the adjusted volt-age levels and the charge current. Thanks to the built-
in Float Charge System, the batteries can be left connected for unlimited time with
the Battery Charger switched on.
During the charging phase the appliances at the outlet AC OUT are continually
supplied with power (LED 8 AC OUT is lit).
The charger functions are shown in the following diagram:
4.6.2 Default values for battery voltage thresholds
Low voltage
Float charge
Absorption
Equalization
Absorption
time
Equalization
time
12V 24V 48V 12V 24V 48V 12V 24V 48V 12V 24V 48V 12/24/48V 12/24/48V
11.6 23.2 46.4 13.5
27.0 54.0 14.4
28.8
57.6
15.6
31.2
62.4 2h
20’
These values can be modified by mean of the optional remote control
4.6.3 Equalization charging
Before you program the HP-COMPACT for Equalization-charge you must check with
your supplier that the batteries are suitable for this process.
Equalization is recommended for the lead-acid batteries in order to mix well the
electrolyte fluid and to clean the lead plates.
If the HP-COMPACT is operating with a lead-acid battery, which is suitable for
equalization, the slide switch „Equalize“ which is on the cable connection side, must
be placed in the ON position. In this setting, every 25 charge cycles an equalization is
