Comments on: The Best Inverters. Pure Sinewave Inverters http://www.aselfsufficientlife.com/the-best-inverters-pure-sinewave-inverters.html Well Kind Of – With Self Sufficiency & Frugal Living Tips Plus Musings from the Mountain Mon, 06 Feb 2012 10:00:12 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Jim Guske http://www.aselfsufficientlife.com/the-best-inverters-pure-sinewave-inverters.html/comment-page-1#comment-11790 Jim Guske Wed, 20 Jan 2010 02:25:38 +0000 http://www.aselfsufficientlife.com/?p=745#comment-11790 In discussing pure sine wave inverters, a lot of inverters and UPS's have a triangle wave as the ac output since it cheaper electronically to do so. A lot of electrical devices like motors are really are designed expecting a sine wave. If you have a triangle wave, it contains higher frequency wave components (look up Fourier transform) that your equipment might not be able to filter out causing problems. In discussing pure sine wave inverters, a lot of inverters and UPS’s have a triangle wave as the ac output since it cheaper electronically to do so. A lot of electrical devices like motors are really are designed expecting a sine wave. If you have a triangle wave, it contains higher frequency wave components (look up Fourier transform) that your equipment might not be able to filter out causing problems.

]]> By: Hobit101 http://www.aselfsufficientlife.com/the-best-inverters-pure-sinewave-inverters.html/comment-page-1#comment-4310 Hobit101 Tue, 14 Jul 2009 21:47:50 +0000 http://www.aselfsufficientlife.com/?p=745#comment-4310 I'm not sure where you are located but the new U.S. tax credit of 30% for alternative energy expenditures will make our systems much cheaper. Maybe we can afford to upgrade the system. A better grade inverter will be more efficient all the way around. I’m not sure where you are located but the new U.S. tax credit of 30% for alternative energy expenditures will make our systems much cheaper. Maybe we can afford to upgrade the system. A better grade inverter will be more efficient all the way around.

]]> By: Mr.Dirty Boots http://www.aselfsufficientlife.com/the-best-inverters-pure-sinewave-inverters.html/comment-page-1#comment-529 Mr.Dirty Boots Tue, 24 Mar 2009 17:21:47 +0000 http://www.aselfsufficientlife.com/?p=745#comment-529 Hi Frank, thanks for a comprehensive comment. I see what you mean about the amp hours. I didn't touch on it as it will come up in later posts and I wanted to keep things simple, but I appreciate your comments. 48 Volt Inverters do not seem to be that widely available and I am guessing it will still be a while before they are a choice for those just beginning with a Solar setup. I agree about prices going down. I can't believe how much cheaper the equipment is now than when we bought ours just over 4 years ago. Hi Frank, thanks for a comprehensive comment. I see what you mean about the amp hours. I didn’t touch on it as it will come up in later posts and I wanted to keep things simple, but I appreciate your comments.

48 Volt Inverters do not seem to be that widely available and I am guessing it will still be a while before they are a choice for those just beginning with a Solar setup.

I agree about prices going down. I can’t believe how much cheaper the equipment is now than when we bought ours just over 4 years ago.

]]> By: Frank http://www.aselfsufficientlife.com/the-best-inverters-pure-sinewave-inverters.html/comment-page-1#comment-528 Frank Tue, 24 Mar 2009 16:25:58 +0000 http://www.aselfsufficientlife.com/?p=745#comment-528 Voltage is not power. Doubling the voltage of your system has nothing to do with power whatsoever. Power is voltage x current. I can build a 48 volt system and have the same power storage as someone with 24 volt system by purchasing batteries with 1/2 the amp-hour rating as used in the 24 volt system. The higher the design voltage, the lower cost for a given amount of power used per day. This is because higher voltage requires smaller diameter copper wires than lower voltage. Copper is expensive. Everything else being equal, the higher the DC voltage of your system the better. The limitation is the available accessories, such as water pumps and inverters. These devices are mass produced in a very limited number of DC voltage ranges. I chose 48 volt DC because at the time this was the highest voltage available for an inverter and DC submersible well pump. We have a Trace 4048. Trace is now Xantrex. Outback is supposed to be very good. Inverters are important! Can't get from that solar DC to AC in the distribution box without them!! Prices on solar are significantly cheaper than they were back in 1998 when we bought much of our equipment! Voltage is not power. Doubling the voltage of your system has nothing to do with power whatsoever. Power is voltage x current. I can build a 48 volt system and have the same power storage as someone with 24 volt system by purchasing batteries with 1/2 the amp-hour rating as used in the 24 volt system. The higher the design voltage, the lower cost for a given amount of power used per day. This is because higher voltage requires smaller diameter copper wires than lower voltage. Copper is expensive. Everything else being equal, the higher the DC voltage of your system the better. The limitation is the available accessories, such as water pumps and inverters. These devices are mass produced in a very limited number of DC voltage ranges. I chose 48 volt DC because at the time this was the highest voltage available for an inverter and DC submersible well pump.

We have a Trace 4048. Trace is now Xantrex. Outback is supposed to be very good. Inverters are important! Can’t get from that solar DC to AC in the distribution box without them!!

Prices on solar are significantly cheaper than they were back in 1998 when we bought much of our equipment!

]]>