These are some of the appliances that may experience problems when running off Modified Sinewave inverters: The Modified sinewave inverter has limitations. It can be efficiently electronically protected in overload, overvoltage, undervoltage and over temperature conditions.Prevents crashes in computers, unreadable print outs, and glitches and noise in monitors.Reduces audible and electrical noise in fans, fluorescent lights, audio amplifiers, TV, Game consoles, Fax, and answering machines.Inductive loads like microwave ovens and motors run correctly, quieter and cooler.Output voltage waveform is pure sine wave with very low harmonic distortion and the same as the ESKOM supply.This is the best output waveform you can get out of an inverter and all appliances are able to run off it without interference or overheating. Inverters have either modified sinewave (squarewave) or pure sinewave output. What is the difference between modified sinewave and pure sinewave? It is always advisable to build in a safety factor by overrating the continuous rating by 20 – 25%. You would need an inverter with a continuous rating of approximately 1500 watts and with a peak/surge rating of approximately 3500 watts. 230VAC x 15A = 3450 Watts peak/surge (also known as start or inrush current) 230VAC x 5A = 1150 Watts continuous power So if you want to run an appliance with a continuous load of 5 Amps and a peak load of 15 Amps : Multiply the equipment/applicance WATTS x 3 = PEAK/SURGE WATTS (approximate) Multiply the equipment/appliance AMPS x 230 V (AC voltage) to give the approximate WATTS or AC power.Ĭalculate approximate startup load (peak/surge watts) Multiply the equipment/appliance AMPS x 230 (AC voltage) = WATTS (approximate) may well have a start up peak/surge of 3 – 7 times the continuous rating.
Induction motors driving such devices as air conditioners, refrigerators, freezers, pumps, etc.
Continuous power is the total WATTS the inverter can support indefinitely while peak/surge power is the amount of power that the inverter can provide for a brief period, usually when the equipment/appliance starts up. Inverters are rated in continuous power and peak/surge power. Without this information any further calculation is not possible. You need to know both the continuous rating in watts or amps and the peak/surge rating in watts or amps. If this information is not available, check with the appliance supplier). The inverter size you choose depends on the power in watts (or current in amps) of the appliance/equipment you want to run (find the power consumption by referring to the specification plate on the appliance or tool or you will find the information in the appliance manual.
#POWER CONVERTER VS INVERTER PROFESSIONAL#
We also carry a range of professional telecom inverters.Ĭlick here to go to our Inverters Page for more details on the range we stock. Sinetech stocks many different sizes, and several brands of power inverters for solar and commercial use.
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