There are various types of power inverters. If this is your first time buying an inverter, you may be a bit confused about which type of device you should buy. There are several things to consider when buying an inverter, with the following criteria being some of the most important. Before you buy an inverter, be sure it meets your needs regarding the following criteria.

Waveform of Current

Most inverters emit one of three types of waveforms: square, modified sine wave, or sine wave. Almost all equipment works well when it receives sinusoidal current. However, equipment that requires sinusoidal current and instead receives non-sinusoidal current typically displays harmonic distortion. The equipment may also fail to work when receiving non-sinusoidal current.

Load Capacity

The load capacity of an inverter should match or exceed the load it serves. Using an inverter that has inadequate load capacity will overstress the inverter and cause it to fail during service. If you aren’t sure about the load of the environment the inverter will serve, having an electrical engineering consultant perform an audit of your building can provide the answer.


Construction Grade

Power inverters have three basic construction grades: residential, commercial, and industrial. The grades are self-explanatory. Residential models are intended for residential application, commercial models are intended for commercial application, and industrial models are meant for use in industrial environments. If in doubt about the grade of an inverter, ask the manufacturer.

Product Certifications

Product certifications attest to the safety of an inverter and its ability to perform in specific types of environments. For example, an inverter with level 3 Network Equipment-Building System (NEBS) certification is certified to perform under a variety of adverse conditions. If your frequency inverter must perform under adverse conditions, be sure that it is certified to do so.

Contact Us Today

Exeltech is an industry leading producer of high-end power inverters. Our inverters are safe for workers and designed to operate under various adverse conditions. Each inverter comes with a level 3 NEBS certification, RoHS certificate, and a TUV – TL9000 certificate. If you need assistance selecting an inverter, call us today at at (800) 886-4683, or use our contact form.