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STUDER INNOTEC HP-COMPACT
HP-COMPACT V5.4 20/80
The measure system built in the HP-COMPACT takes into account the battery
voltage, the discharge and charge current as well as the undulation of the voltage. If
the battery and the HP-COMPACT are used according to their technical data, the
battery state of charge is displayed accurately. In the following cases of use the
display can diverge:
− Battery charge or discharge with too high
currents
− Battery cable cross section too small
− Battery connections badly tightened or corroded
− Charge of the battery with external battery
charger
− Discharge of the battery with users not
connected to the HP-COMPACT
− Work with defective or sulphated batteries
This means that the display can, within few minutes
during the charge, commute from 25% to 75% or
during the discharge, to the opposite direction.
As many of the working cases mentioned above often occur, the measure system of
the HP-COMPACT takes into account, during the charge, only the peaks of the
voltage undulation. As a consequence, the battery voltage at the start of the
absorption stage, measured by a voltmeter will appear deeper. By decrease of the
charge current the voltage will reach the exact values.
For safety reasons, you must get the recommended charge voltage and charge
currents from your battery supplier. The voltage levels and charge characteristics can
be changed through Programming. The instruction for programming of battery
charger is in the section „Programming“ (Chap. 5.3). The correct charging is
mandatory for a safe function and a long-life of the battery.
The battery charger are described by the graphic in chap. 4.6.1.
4.7 The Transfer system
When an AC voltage is at the input AC IN of the HP-COMPACT, the LED 1 AC IN is
lit. When this voltage matches the lowest adjusted value set by the Turning Knob 23
TRANSFER, and the frequency is between 44Hz and 65Hz, this voltage is switched
directly to the battery charger and to the output AC OUT. The LED 7 TRANSFER is
lit. The inverter is switched off and the battery charger switched on. This process is
automatic, unless the charger mode or the transfer mode is disabled (see Chap. 5.5).
The maximum current of the Transfer switch is 30A (50A for HPC-8000-48). That
means through this system, appliances up to a maximum of al 6900 Watt at 230V
(11500W for HPC 8000-48) can be operated. When the Battery Charger is working,
part of this power is used for charging according to the power sharing system.
The Transfer system is protected against overload with a circuit breaker on the AC
Input side of the HP-COMPACT. If the system has been overloaded, the button/pin of
the fuse will pop out. To put the automatic safety system back in to operating you
must push this pin back.
Note: in the Inverter operation, The HP-COMPACT generates a true sinusoidal and
quartz stabilized output voltage. However if the HP-COMPACT is supplied from a grid
or a generator and the transfer contact is active, then you have at the output AC OUT
the same voltage as that at the input. This voltage can not be modified by the HP-
COMPACT !