Above is a picture of a rub caused by corrosion swelling in the steel laminations behind the ferrite magnets. Such corrosion will tend to push out the magnets and cause a rub. Contact with the stator then results in the wear (polishing) of the magnets.
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I occasionally get sent pictures of poorly installed PowerSpout turbines as part of a complaint about lower than expected performance. The pictures often reveal the reasons
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The first PowerSpout PLT ever made (in 2010) went to our 150m test site. Prior to this turbine, our earlier (2005) green-case PLT had also been tested on this site.
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If you think electric cars are a passing fad, then take note: We have one, our IT advisor has one, our software contractor has one. We can only charge two at a time so let’s hope no more staff/contractors buy them.
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We get a number of queries each month from clients who feel some resistance when they spin the rotor of a turbine's permanent magnet alternator or PMA by hand after unboxing.
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Our PLT/TRG 28 or 56 turbine options can be connected directly to your (24V or 48V) battery, but we almost always recommend that clients use a PLT/TRG 40 or 80 instead, with MPPT controller so as to optimise turbine speed and maximise power.
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