Velleman PSI300SB Mode D'emploi page 4

Make sure not to exceed the input voltage (see "Technical
Specifications").
When connecting the inverter with audio equipment, it is possible to hear
noise through the speakers. This is not due to a faulty inverter. Cheaper
audio devices are generally equipped with inferior noise filters. The
inverter produces its signal at a high frequency and this high frequency
signal can be equal to the audio signal. You can correct this by placing a
decent filter.
A 300 W inverter can easily be connected to a car battery. For more
power demanding equipment we recommend using a traction battery.
These batteries are designed to supply a large amount of power during a
longer period. Be aware that an inverter delivering 600 W will be drawing
around 60 A from the battery.
Let the car engine run while using the converter. Let the engine run for
10 to 20 minutes after a 2 to 3 hour use of the inverter. Switch off the
inverter FIRST.
Use batteries with an identical electric charge (Ah) when connecting
various batteries (in parallel).
Select the correct input voltage when using the device – overload can
cause damage. This damage will not be covered by the warranty.
Nor Velleman nv nor its dealers can be held responsible for any damage
(extraordinary, incidental or indirect) – of any nature (financial, physical...)
arising from the possession, use or failure of this product.
4. Application
With this inverter you can connect devices, which are normally connected to
the mains, to a battery. The inverter converts the battery voltage into a
voltage comparable to the mains voltage (modified). They are very practical
for use in a car, boat or vans.
Most devices are perfectly connectable to the inverter. Respect these few
guidelines to ensure a safe use.
Devices designed to be connected to the mains (230 Vac 50 Hz).
The device's power output is known and does not exceed the max. load of
the inverter.
It is not recommended to connect small devices powered by batteries to
the inverter with modified output. These devices can be damaged or can
damage the inverter.
Do not connect rapid chargers to the inverter with modified output. These
devices can be damaged or can damage the inverter. Connect these
devices to an inverter with a pure output.
Switching power supplies (e.g. power supplies for laptops) can be
damaged or can damage the inverter. Some power supplies only operate
with a pure sine wave.
5. Remark
On most devices, the power output is mentioned at the back expressed
in W (watt). This power output is called the capacity and is the power
needed by the device during normal operation. Make sure this value does
V. 02 – 17/05/2013
PSI300SB/PSI300SS
4 ©Velleman nv