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Category: Tech Tips

Annual Solar System Checkup

ipgWhy Inspect Solar Batteries?

Because batteries directly affect system performance, it is important to make sure they are functioning at optimal capacity.

We recommend you check the batteries in your solar electric system once a year. This checkup should begin with a visiual inspection to look for corroded terminals, excessive bulging and cracked cases. Make sure the connections are tight and measure the voltage of each battery with a multimeter.

Remember to check the age of your batteries. Batteries designed for small solar systems last between 4 to 7 years depending on system design and the average temperature to which batteries are exposed.

Larger systems using 2-volt batteries can last as long as 7 to 10 years because the batteries are designed for longer cyclical life.

We have a full line of batteries ready to go. Contact Customer Care today at 1.800.81.SOLAR or visit www.sunwize.com to learn more.

 

 

SMA – Arc Fault Circuit Interruption Solution

Learn more about Arc Fault Circuit Interruption Solution from SMA. 

Remote power systems for scientific research

Solar panels have proven ideal in providing electricity for scientific research no matter how remote the location.

Modern scientific research often requires electricity for powering monitoring devices. For research occurring in remote locations, off-grid power is necessary to keep everything going. Solar panels have proven ideal in providing electricity for scientific research no matter how remote the location.

For example, the British Antarctic Survey now uses solar energy for its research facilities to avoid having to ship fuel onto the continent.

Closer to home, remote solar monitoring equipment is necessary for gathering up-to-date information. SunWize was instrumental in installing photovoltaic equipment at two plants operated by the Indiana Utility Regulatory Commission. The environmental monitoring technology, set up in more remote locations, keeps track of the amount of oxygen present in water. This metric is one of the most crucial tests for determining the health of a water system for plant and animal life, according to Remote Site and Equipment Management Magazine.

Additionally, SunWize worked with the Arizona Department of Transportation to provide reliable power for road weather stations. ADOT needed accurate readings of weather conditions to estimate wear and tear on stretches of road. Since many miles of highway are located in remote parts of Arizona, off-grid solar modules proved to be the reliable source of electricity needed to keep the monitoring equipment running all year.

Fronius IG Plus Inverter String Combiner Tech Tip

Fronius Tech-Tip

Here’s a great tip for the Fronius IG Plus String Combiner from our partners at Fronius USA:

Each Fronius IG Plus inverter comes with a built in string combiner perfect for use when the inverter is in close proximity to your panels (like ground mounts and carports). The use of string fuses in the inverter adds fuse protection to the inverter and panels, and reduces balance of system costs from external fused string combiners.

Calculate the correct size fuses based on NEC rules, and use either Littelfuse KLKD, or Cooper Bussmann PV fuses rated for 600 volts.

Each fused input is capable of handling up to 20 amps and up to a #6 wire. If several solar module strings are combined outside of the inverter into one string, the current of the solar module string may be higher than the current permitted for a DC terminal (20 A). In this case, you have the option of connecting the DC cables to the inverter using a connecting distributor kit as shown in the diagram(SunWize part #158077), or with crimp lugs or a “chair lug”.

For additional product information, please click here.

For a limited time, SunWize is offering Fronius IG Plus 6kW inverters (Sunwize Part #158064) for $2,399. Orders must be shipped by November 1, 2011 to qualify for low promotion price.

The difference between the term ‘power’ and the term ‘energy’

Did you know?

Did you know there is a difference between the term ‘power’ and the term ‘energy’? Energy is the result of power supplied over a period of time or

Power (P) x Time (T) = Energy (E)

How does this relate to designing a solar electric system? You can find out by reading this engineering bulletin.


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