3
ENGLISH
The power inverter output waveform
The ac output waveform of the power inverter is known as a
“modified sine wave”.
This type of waveform is suitable for most ac loads, including
linear and switching power supplies used in electronic
equipment, transformers and motors.
Operating instructions
Power source requirements
The power source must provide 12.5 Vdc and must be able
to supply the necessary current to operate the load.
Warning!
The power inverter must be connected only to
batteries with a nominal output voltage of 12 volts. The
appliance will not operate from a 6 volt battery and will
sustain permanent damage if connected to a 24 volt battery.
Connection to a power source
The power inverter comes equipped with a 12 Vdc
accessory plug (4) and battery clamps (5) for connection to
a dc power source.
Connecting to a power source using the 12 Vdc
accessory plug (up to 100W only)
The 12 Vdc accessory plug (4) is suitable for operating the
power inverter at power outputs up to 100 Watts. The tip of
the plug is positive (+) and the side contact is negative (-).
Warning!
Connect the ring terminals to the terminals (7) of
the power inverter before connecting the accessory plug to
the accessory outlet. Make sure that the On/Off switch (3) is
turned off and that no flammable fumes are present in the
installation area.
X
Connect the ring terminal of the red cable to the red
terminal (7) marked (+) on the back of the power
inverter.
X
Connect the ring terminal of the black cable to the black
terminal (7) marked (-) on the back of the power inverter.
X
Connect the power inverter to the power source by
inserting the 12 Vdc accessory plug (4) firmly into the
accessory outlet of a vehicle or other dc power source.
Warning!
You must connect directly to the power source
when operating above 100 watts.
Warning!
Do not use with positive ground electrical
systems, (i.e. older vehicles).
Warning!
A reverse polarity connection will result in a blown
fuse and may cause permanent damage to the power
inverter.
Note:
On some vehicles the accessory socket may only
become live when the ignition key is in the accessory
position.
The power inverter may be used whether or not the vehicle's
engine is running. However, the power inverter may not
operate while the engine is starting because the battery
voltage can drop substantially during cranking.
The power inverter draws less than 0.7 amperes from the
battery when it is not supplying power to a load and the On/
Off switch (3) is on. In most instances, the power inverter can
be left connected to the battery when not in use since it
draws very little current. However, if the vehicle is to remain
unused for several days, disconnect the power inverter from
the battery.
Rated versus actual power requirements of equipment
Most electrical tools, appliances and audio/video equipment
have labels that indicate the power consumption in amps or
watts. Be sure that the power consumption of the item you
wish to operate is rated at 400 watts or less.
The power inverter is fitted with overload protection and will
shutdown if a load in excess of 400 W is applied.
To restart the appliance after a shutdown due to overloading,
remove the overload and reset by turning the appliance off
and then on again.
Warning!
This appliance will not operate high wattage
appliances or equipment that produce heat, such as hair
dryers, microwave ovens, and toasters.
Protective features of the power inverter
Your appliance monitors the following potentially hazardous
conditions:
X
Low voltage protection
. This condition is not harmful
to the appliance but could damage the power source.
The appliance will sound an alarm when the source
voltage drops below 11 V +/- 0.5 Vdc and will
automatically shut down when input voltage drops to
10.5 +/- 0.5 Vdc. When the condition is corrected, turn
the appliance off and then on.
X
Over voltage protection.
The power inverter will
automatically shutdown when the input voltage exceeds
15.5 +/- 0.5 Vdc.
X
Short circuit protection.
A reverse polarity or short
circuit condition may cause external or internal fuses to
open and may cause irreversible damage to the
appliance. Take extra care to insure a correct polarity
connection.
X
Overload protection.
The power inverter will
automatically shut down when the continuous load
exceeds 400 watts. When the overload is removed,
reset the appliance by turning it off and then on again.
