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IVT 8A Solar Manual

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OPERATING INSTRUCTIONS
SOLAR BATTERY CHARGER UNIT 12/24V 8A
- Automatic 12/24V switch
- For 12/24 V systems
- Dynamic protection against over discharge
- Gas-formation control (gas control)
- Temperature compensation
Dear Customer,
Thanks you for buying our product. You have bought one of the most powerful, compact and reliable units of its class. Please read the
operating instructions carefully before use.
WARNING!!! Safety Instructions!!!
- Do not use the unit:
In places which are dusty, damp. In a high humidity area (over 80% rel. humidity), Temperatures above 50°C. In areas containing
inflammable materials (liquids/solvents, gas). Do not immerse in water.
- Use only in closed, dry areas.
- Should the unit fail to operate, or show signs of not operating properly unplug immediately and make sure that the unit is not put into further
operation. Do not use the unit when visible signs of damage - due to transport or inadequate storage are noticeable.
- To prevent the risk of explosion by overcharging, install the battery in a well ventilated place.
- When recharging sealed lead acid batteries, switch off the gas-control (see pre- installation).
- Use only solar cells as power source.
- Follow installation instructions strictly when connection the unit! The unit should be disconnected in reverse order (see installation
procedures).
- To prevent a short-circuit between Solar charger unit and battery, install a fuse on the positive terminal/pole.
- Equipment which on account of its function may not be switched off by means of load rejection (e.g. navigation lights) must be connected
directly to the battery and fused.
- Gas control of boats must be switched off. (refer to presettings)
The use of lead-batteries is common for the storage of solar energy (photovoltaic solar systems). Lead-batteries require protection against
overcharging and over discharging. This unit satisfies both requirements.
12/24 V Changeover: The unit can be used with both 12 V and 24 V photovoltaic solar systems. Manual switching is not required, as the
device adapts automatically to the system.
Protection against over discharge: Lead-Batteries need to be protected against being discharged, otherwise damage can occur to the
battery cells. The solar battery charger unit protects lead-batteries from undercharging when the required battery power output is not achieved
by automatically switching-off. As soon as the batteries are recharged by the solar cells, the load is automatically reconnected.
Protection against overcharge: Exceeding the final charging voltage (13,7 V DC) leads to the formation of gas, which damages the
batteries. The amount of gas depends on the temperature. The inbuilt temperature-sensor automatically regulates the final charging voltage in
relation to the temperature in area of use/operation. The battery is not fully charged when the final charging voltage is reached. The charging
current should not be completely switched off, instead reduced, so that the final charging voltage is not exceeded. This is accomplished by the
solar charger unit.
The charging process - "IU-charging" recharges the batteries evenly and quickly.
The "IU-charging" is achieved by a very quick temporary short-circuiting procedure - also known as the pulse-width modulation (PWM) shunt
procedure!
Gas control: An over extended use of lead-batteries without a controlled gas-formation can lead to the development of damaging battery
acids. The solar charger unit controls the gas-formation and therefore removes and prevents the development of battery acids. This process
depends upon the temperature and is regulated by the in-built temperature-sensor.
Warning: Switch off gas control regulators when operating solar systems on boats (refer to presettings).
Temperature compensation: The in-built temperature compensator adjusts and regulates the final charging voltage and gas-
formation of the batteries to the temperature in area of use.
Connection and Operating-elements
1. LED green – battery is being charged.
Green LED is off at night, as the solar cell has no charging capacity.
2. LED red – load is disconnected.
Load disconnection is active, to prevent the battery of deep
discharge. As soon as the battery is sufficiently charged, the
consumers are reconnected and the LED goes out.
3. + / - connection of lead battery
4. + / - connection of load (consumer)
5. 10A glass fuse
6. + / - connection of solar module
www.busse-yachtshop.de | info@busse-yachtshop.de
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