Safety Precautions; How Power Inverters Work - ATD Tools ATD-5951 Manual

4. The surge draw of the equipment or appliance being operated exceeds 800 watts.
5. The circuit temperature exceeds 165°F.
Note:
The inverter is equipped with a cooling fan which is designed to run continuously while the inverter is
operating. Automatic shut down caused by high circuit temperatures will occur when the cooling fan
is unable to maintain a cool enough temperature for safe operation of the inverter.
In the event of automatic shut down or continuous audible alarm, turn the inverter rocker switch to
the OFF(0) position until the source of the problem has been determined and resolved.

Safety Precautions.

For best results place the power inverter on a reasonably flat surface.
Keep the inverter dry. Do not expose it to rain or moisture.
DO NOT operate the inverter if the inverter, device being operated or any other surfaces that may
come in contact with any power source are wet. Water and many other liquids can conduct
electricity, which may lead to serious injury or death.
Avoid placing the inverter on or near heating vents, radiators or other sources of heat. Do not leave
the inverter in the passenger compartment of your vehicle. Store in a cool dry place. Do not place
the inverter in direct sunlight. Ideal air temperature should be between 50°F and 80°F.
In order to properly disperse heat generated while the inverter is in operation, keep it well ventilated.
While in use, maintain several inches of clearance around the top and sides of the inverter.
Do not use the inverter near flammable materials. Do not place the inverter in areas such as battery
compartments where fumes or gases may accumulate.

How Power Inverters Work

There are two stages in which a power inverter changes the 12-volt DC (or battery) power into
110V AC (household current).
STAGE 1:
The inverter uses a DC-to-DC converter to increase the DC input voltage from the power source to 145
volts DC.
STAGE 2:
The inverter then converts the high voltage DC into 110V AC (household
current), using advanced MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor) transistors in a
full bridge configuration. This design provides all our inverters with the capability to start and run difficult
reactive loads, while providing excellent overload capability The waveform that is generated by this
conversion is a "modified sine wave" as shown in the diagram below.
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REV 06‐09