Inverter ratings

The three ratings that you should look at when buying an inverter are:

Continuous Rating: This is the amount of power you could expect to use continuously without the inverter overheating and shutting down.


Half Hour Rating: This is handy as the continuous rating may be too low to run a high energy consumption power tool or appliance, however if the appliance was only to be used occasionally then the half hour rating may well suffice.


Surge Rating: A high surge is required to start some appliances and once running they may need considerably less power to keep functioning. The inverter must be able to hold its surge rating for at least 5 seconds. TVs and refrigerators are examples of items that require only relatively low power once running, but require a high surge to start.

Inverter Tips:

In general, any device that senses either voltage peaks or zero crossings could have problems when running from modified sine wave. Devices such as these should be run from true sine wave inverters.

Ham radio and CB radio operators may notice RF noise from modified sine wave inverters; in that case do not run the radio and the inverter at the same time. Electronics that modulate RF (radio frequency) signals on the AC line will not work and may be damaged. You may notice hum or buzz in the audio of TV’s, radios and satellite systems used with modified sine wave inverters. Audiophiles or professionals using sophisticated audio, remote measurement, surveillance or telemetry equipment should use true sine wave.

Examples of problem devices are motor speed controllers employing triacs, and some small battery rechargers that do not incorporate a transformer between the utility power and the load. To help you visualize this, if there isn’t a ‘wall wart’ between the battery charger (or the battery in the device) and the AC plug, don’t use modified sine wave.

Please note two other common problem loads, electric shavers and emergency flashlights. Both of these items have batteries in them but connect directly into the wall to charge, without an external transformer. Don’t use items like these with an modified sine wave inverter. If you do use an modified sine wave inverter with a transformer-less charger, your product will likely be damaged.

Garage door openers, laser printers and large strobes used in photography have all been reported as trouble loads for modified sine wave inverters; they either don’t work at all or stop working entirely, so don’t take a chance – use true sine wave.

As a general rule, products operating through an AC adapter will work fine from an modified sine wave inverter. These include laptops and cell phone chargers, video games, camcorder and digital camera chargers. Televisions generally work well; some VCR’s with inexpensive power supplies run poorly. Consider switching to another brand of VCR in that case.

A potential solution for RV’ers or off-grid cottagers is to purchase our smallest true sine wave inverter to run TV, VCR and audio equipment, and a larger modified sine wave inverter (such as the XPower 1750 Plus) for the coffee maker, hair dryer and microwave.

Pure sine wave inverters are the best for your appliance. So get yours now to enjoy a steady power supply.

For proffesional Advice , Inquires and Service rendering please call:

Paul Eziafa
08039349501, 07040930818
paulobi@cadlin.com

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