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Pure Sine vs Modified Sine Wave Inverters and GRID-TIE EFFICIENCY

ROOF RAIL-configguidev46 650k
TOP OF POLE-configguidev62 988k
PRODUCT BROCHURE 30AUgv51

COMPARE Roof vs Gnd 80.2-64.2cents



 Inverters come in many sizes and with lots of different features. Generally, there are two types Pure Sine wave and "Modified" Sine Wave. Trouble is not all waves are created equal and like most products some are better than others for various reasons. Also, generally, you get what you pay for. Outback and MagnaSine are both good devices and designed by the people who founded Trace Inverters which was bought by Xantrex a few years ago in an attempt to control the small inverter market. Others like SMA America have European origins but with models that work fine in the 120v 60hz North American market.

One key thing to note is that if you plan to do Net-Metering and feed power into the grid you will need to have an inverter that complies with UL Std 1741 which most utilities require as a safety feature. Basically UL1741 requires the inverter to be able to disconnect from the grid automatically within 2milliseconds in case of any power failure or even a minor fluctuation . . .and not reconnect until it has 5 minutes of continuous power from the grid. Unfortunately, this means that when you have nay fluctuation in a power source including the grid the system must be off-line for at least 5 minutes even if the problem itself was only a few milliseconds. And when it is connected if you only have a few hundred watts to feed back to the grid . . . if you have a 3500Watt inverter it's not going to be operating at peak efficiency and may waste half of the energy you are trying to save in the grid connection. For small home systems generating less than 2-3 Kilowatts most of the time, more often than not, you'll actually save more energy by storing it in a battery than trying to send it to the grid through an inverter operating at 50% efficiency.

Here are a few examples with a rough budget for a power management assembly. It normally should include lightning arrestors, monitoring devices and circuit breakers etc. . . so make sure you are getting a FULL quote. See your local Dealer for a quote based on your systems needs.

   Inverters mounted on the E-Panel from Midnite Solar 

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Please see OutBack , MagnaSine or MidNite Solar websites for detailed specifications and performance.

LAKOTA Dealers offers excellent pricing on OutBack when purchased with a Lakota turbine or complete system.

   

 

 

Click Photos to download PDF specs

  

 

 

 
 

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