Low Frequency Off-Grid Pure Sine Wave
24v input, 120v output, 1000w, 1500w, 2000w, 3000w, 4000w
The FZ-EP3000-LV series is a very economical pure sine wave inverter with built
in AC charger from 20A to 70A (depending on model). Solar /AC priority configurable. With a low frequency transformer, it enables
the inverter to safely operate with all kinds of home appliances.
Why do you NEED a Pure Sine Wave Inverter?
A modified sine wave inverter can be used for simple systems that don’t have any delicate electronics or audio equipment that may pick up the choppy wave and produce a hum. Old tube TVs and motors with brushes are usually ok with modified sine wave. Your digital clock will likely act funky, and battery rechargers quite often just plain won’t work. Some equipment may seem to be working fine, but may run hotter than with a pure sine wave and reduce the life of it.
Take heed if you’re considering buying a modified square wave inverter to shave a few bucks off your system costs. Many modern appliances won’t run as well and some not at all on modified waveform:
· Laser printers, photocopiers, and anything with an electrical component called a thyristor
· Anything with a silicon-controlled rectifier (SCR), like those used in some washing machine controls
· A few laptop computers
· Some fluorescent lights with electronic ballasts
· Some battery chargers for cordless tools
· Some new furnaces and pellet heaters with microprocessor controls
· Digital clocks with radios
· Appliances having speed/microprocessor controls (like some sewing machines)
· Home automation systems
· Medical equipment such as oxygen concentrators
In general, because the total harmonic distortion is higher in modified square wave inverters, motors will run hotter (less efficiently, consuming up to 30% more energy than with pure sine wave inverters), and likely not last as long. Additionally, a modified square wave inverter will often cause a “buzz” to be heard from audio devices and sometimes other appliances like ceiling fans and microwave ovens.
You can liken using a modified sine wave inverter to running a car with square wheels versus a pure sine wave inverter like running a car with round wheels. In the first case the ride is going to be awful rough and depending on the sensitivity of the car’s occupants they may not survive the ride.