12V 2700W Pro-Wave Pure Sine Wave Inverter

DIGITAL DISPLAY

LED display provides information on battery voltage, power usage and load capacity

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WHY DOES THE INVERTER TURN ITSELF OFF?

Why does the inverter turn itself off?
If the inverter’s audible alarm sounds and a fault LED illuminates, this indicates that there is a fault or error, and the inverter may turn off. Most commonly this would be caused by an appliance that is drawing too much power (overloading), low battery voltage or voltage drop due to insufficient size cables or poor connections (refer to ‘Understanding your Inverter’ tables, page 7).

THE INVERTER WILL NOT RUN MY APPLIANCE EVEN THOUGH THE APPLIANCE DRAWS LESS POWER (WATTS) THAN THE SIZE OF THE INVERTER?

The inverter will not run my appliance even though the appliance draws less power (Watts) than the size of the inverter?
Electrical appliances can be divided into three groups by the way they draw energy (current) from their power supply. These groups are “Resistive”, “Inductive” and “Capacitive” appliances or also called “loads”. Some appliances may draw all three types of power.

Resistive Loads such as normal incandescent lights (wire filament) always draw a constant power (watts) from the power supply, that is a 100 Watt light will draw approximately 100 Watts from the power supply at all times. Resistive loads are the easiest appliances for an inverter to run.

Inductive Loads such as a refrigerator (Electric Motor) require a large rush of power (surge current) to start and then usually draw a more constant power once running. Inductive loads contain coils of wire (motors, transformers, ballasts, solenoids). When the power is first turned on, these coils of wire draw a large surge current which forms the magnetic flux (magnetic field) which allows these appliances to work. This magnetic flux is a kind of stored energy.
The most common inductive appliances are: fridges, air compressors, transformers/chargers, pumps, power tools and fluorescent lights. These appliances can draw up to 10 times their normal running power to start up; that is to run an 80W fridge you may need a 600 to 1000 Watt inverter.

Capacitive Loads such as many TV’s or many electronic appliances require a large surge current to start only when they have not been used for a while. This is often due to large capacitors in the power supply that must be quickly charged when the appliance is turned on. If the appliance is not used for a few days these capacitors slowly go flat. Resetting the inverter a couple of times may allow these appliances to work.

There are some appliances such as large refrigerators, air conditioners and other pump driven appliances that have extremely high start up currents, because they have an inductive motor that must start under load. These appliances are not recommended for use with an inverter. They should be powered by an engine driven generator.

WHY DOES IT DAMAGE THE INVERTER IF THE BATTERY LEADS ARE REVERSE-CONNECTED?

Why does it damage the inverter if the battery leads are reverse-connected?
Your inverter uses sophisticated electronics to convert DC battery power to AC mains power. If you accidentally connect the inverter to the battery incorrectly (reverse polarity) a large current will be drawn by the inverter which will blow the protection fuse. As this occurs some of the high current could damage sensitive electronic components. Because of this risk it is important to always double-check the battery polarity before making any connections.

HOW DO I CHECK OR CHANGE THE FUSES?

How do I check or change the fuses?
Pro-Wave inverters contain internal fuses and should only be checked or replaced by a qualified electrical appliance repairer.

THE DC SUPPLY MUST BE DISCONNECTED BEFORE ANY REPAIR, THEN TURN THE ON/OFF SWITCH OF THE INVERTER “ON” TO DISCHARGE THE CAPACITORS.

WHY DOES THE FAN ONLY OPERATE SOMETIMES?

Why does the fan only operate sometimes?
Pro-Wave inverters feature a temperature controlled automatic cooling fan that only operates when needed. This allows the inverter to run very quietly for most of the time.

CAN I RUN LAPTOP COMPUTERS AND OTHER SENSITIVE ELECTRICAL APPLIANCES?

Can I run laptop computers and other sensitive electrical appliances?
Yes. Pro-Wave’s pure sine wave output is suitable for medical equipment and sensitive electrical appliances. They allow you to watch television without static, operate computers and gaming consoles and run fluorescent lights.

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