The more you have in place for the details for any of these factors the better (lower) the THD numbers, but the greater the cost. True Power™ Technology delivers best-in-class power quality with less than 5 percent total harmonic distortion for clean, smooth operation of sensitive electronics and appliances. 5 Year Limited Warranty for automatic standby generators. This phenomenon is called interference. The cumulative effect of these harmonics on the original waveform is termed as Total Harmonic Distortion (THD). “Clean electricity” is considered good with  a THD of less than 6% and often stated or promoted at 5% or less. The magnitude of both waves gets added. Wish me luck. The increase in flux density further reduces the area for current to flow. Thus the lower quality and typically higher distortion. Not so the furnace and or the thermostat were not loving the generator. Full-panel GFCI Protection The XP Series meets OSHA requirements for GFCI protection. July 2020, bought a Westinghouse WGEN5300DF. As per the article, computers and allied equipment like programmable controllers typically require AC sources that have no more than a 5% harmonic voltage distortion factor, with the largest single harmonic being no more than 3% of the fundamental voltage. I had a power outage today and was excited to test my new Westinghouse generator in conjunction with a new Ruud 98 furnace and it’s Econet thermostat. Thus, the result is a distorted non-sinusoidal wave. Generally if you’re appliances are not all fancy you can get away with higher THD values which are typical of the vast majority of non inverter generation. Generally, there are two types of load; linear loads and non-linear loads. Champion portable generators will output an industry standard total harmonic distortion (THD) rating of about 12%-20% depending on load applied. Thank you for taking the time to explain this. These circulating currents are produced due to the flux leakages in the core. Mathematically, it is the ratio of the sum of values of all the harmonic components to the value at the fundamental frequency, expressed as a percentage. It is your responsibility to verify and investigate this information. In such a case the neutral current will also cause overheating of the neutral wire. PrecisionPower™ technology delivers best-in-class power quality with less than 5% total harmonic distortion for clean, smooth operation of sensitive electronics and appliances; Honeywell by Generac® generators and engines are engineered and built in the USA, built … This model has the biggest capacity with an impressive 22,000 watts when running on liquid propane and 19500 watts when connected to your home’s natural gas supply. For example, a wave which has a fundamental frequency of 60 Hz will have its 2nd harmonic at 120 Hz, 3rd harmonic at 180 Hz, 4th harmonic at 240 Hz and so on. Unsure what you mean. Also, would having the generator outside and the equipment inside the house mitigate the issues with THD? The points, where the harmonics are in-phase with the original wave, are added up constructively. The loads which draw current in a non-sinusoidal waveform are called non-linear loads. We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites. computers, printers, microprocessors, fluorescence lightning, etc. Hi Paul, I wanted to thank you for a perfect description on a very complex concept of how electricity works. Had enough gas until the last couple days. Thus, the resulting wave has a lesser amplitude than the individual waves. True Power™ Technology delivers best-in-class power quality with less than 5 percent total harmonic distortion for clean, smooth operation of sensitive electronics and appliances. Narrowed it down to about three companies. Total Harmonic Distortion (THD) is the degree to which a current or voltage waveform is distorted. Damage to Sensitive Electronic Equipment, Harmonics in a Portable Inverter Generator, inverter generators and conventional generators, difference between inverter and conventional generators. Generac generators and engines are Engineered and Built in the USA using domestic and foreign parts Does that high of a THD affect the power output of the generator itself? Hi Bob, thanks for the kind words! Harmonics in a power system are caused by non-linear loads and most of the loads these days are non-linear. If you want to power sensitive electronics, what you need is an inverter generator, not a conventional generator. Lots of power issues here. Therefore, as much as these harmonics are undesired, they will still be present in the power system. But if you need to rely on more sensitive equipment you’ll be looking to more expensive standby type generators or inverter power generators. Will call them and ask. Best-in-class power quality with less than 5% total harmonic distortion means clean, smooth operation of your sensitive tools. You may even get flickering in your lights although most lights can easily handle this amount of distortion. Skin effect (opens in a new tab) is a scenario in which the current does not flow through the whole conductor, but only through its outermost portion. Total Harmonic Distortion (THD) is the stated measurement related to the quality of electricity.The amount of THD will influence how your equipment may respond or perform. Its the gen output 8K/12K B&S at measured ~15% that scares me. Harmonics are a very technical subject and should only be dealt by an experienced person. Product Description. When two or more waves interact, they superimpose to form a resultant wave that has either a greater, lower or same amplitude. Factors that influence THD are primarily in the alternator construction and excitation as well as the controlling electronics for frequency and voltage. I converted it to tri-fuel and using Nat Gas after Sandy. Features: True Power™ Technology delivers best-in-class power quality with less than 5 percent total harmonic distortion for clean, smooth operation of sensitive electronics and appliances. View larger image. Item# 750142 Quick Info. The current harmonics, in turn, are responsible for the voltage harmonics. Basically, PowerRush is a term coined by Generac to advertise a common feature on generators, usually known as peak load capacity. Find Parts. Needless to say, this is when the great awakening happened, THD. It’s simple to say if you are getting a high quality alternator that it will be paired to high quality engine and controls. THD less than 10%, Higher quality power is required as your requirements for more need go up.THD 6% to 9%, Highest quality”clean power” is needed for your more sensitive electronics such as LCD screens, TV’s, and other microprocessor appliances. What I can’t seem to get answered is if there’s a way to take a portable generator like the Champion Power Equipment Model #100297 and clean up it’s THD with something like an inline automated voltage regulator. Electronic equipment is, by nature, a non-linear load and thus, responsible for creation of harmonics, which have a negative impact on the power system. That’s a fairly standard value for a conventional generator. Manual . see more I could not find the Total Harmonic Distortion (THD) rating for the output power signal in any online specifications for the product, nor in the product manual. To be honest, I do think that inverter generators are pretty much always the better choice. Harmonic components of a fundamental wave. Compare. For units that measure greater than 6% THD the electrical wave can cause sensitive electrical circuits such as computers or other minor electronics, to lose life. Generac GP8000E is a popular option at the top of the price range. Since the current is non-sinusoidal, the voltage drop will also be non-sinusoidal. Does it make any sense to power the furnace with an inverter? Replacement Parts Available. Free Store Pickup Today $. To elaborate on the concept of clean power (as in sinusoidal, not to be confused with green energy), let us compare portable inverter generators and conventional generators in terms of the THD (Total Harmonic Distortion) produced. Why do you advertise a Westinghouse wg7500 on your website when it has a thd of less than 23 per cent I just bought one and now I am reluctant about using it. Fully automatic operation when paired with generac Smart Switch honest, I think! 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