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<blockquote data-quote="Joules" data-source="post: 536275" data-attributes="member: 35656"><p>I have the Immersun Mk II which was bought back in 2014 and still in use today. Immersun folded but these guys survived to bring out their present Mk V. The topology of both are quite different, the one you bought uses phase control thyristors/triacs to reduce/control the export which creates an enormous amount of RFI and grid third harmonics distortion. Their design effort has largely revolved around RFI suppression and meeting compliance. The reason they survived is that they make them to order one at a time.</p><p></p><p>The guy who designed the Immersun formed a new company which now makes the EDDI. The Immersun got around the RFI and harmonics problem by using PWM to create an amplitude modulated 50Hz sine wave in phase with the mains. Yes, they are expensive and more complicated about a 100 more than yours but IMHO they are and remain the better product. There are a lot of what you bought out there so I'm sure members will solve your problem for you.</p></blockquote><p></p>
[QUOTE="Joules, post: 536275, member: 35656"] I have the Immersun Mk II which was bought back in 2014 and still in use today. Immersun folded but these guys survived to bring out their present Mk V. The topology of both are quite different, the one you bought uses phase control thyristors/triacs to reduce/control the export which creates an enormous amount of RFI and grid third harmonics distortion. Their design effort has largely revolved around RFI suppression and meeting compliance. The reason they survived is that they make them to order one at a time. The guy who designed the Immersun formed a new company which now makes the EDDI. The Immersun got around the RFI and harmonics problem by using PWM to create an amplitude modulated 50Hz sine wave in phase with the mains. Yes, they are expensive and more complicated about a 100 more than yours but IMHO they are and remain the better product. There are a lot of what you bought out there so I'm sure members will solve your problem for you. [/QUOTE]
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