Safe DC is an innovated solution by SolarEdge Technologies. First responders called out to an emergency commonly shut down the power supply to the building. However, if the building has solar the modules will continuously generate a DC voltage and taking into account each module will output 30-60 Volts when connected to a string of modules can reach 600-1500V which of course can be dangerous for maintenance personnel and first responders during an emergency. With SolarEdge all module level outputs are reduced to 1 Volt per module.
There maybe a number of reasons why this is the case, in most cases going back to 2011 when Solar systems were first deployed on Residential and Commercial properties in the UK, inverters in general had a lifespan of 5-8 years and most cases warranties of 5 Yrs. This was the norm due to the technology within the inverters.
The first reason for inverter failure is electro-mechanical wear on capacitors… This in itself can be a cause of inverter failure. Capacitors are also extremely temperature sensitive. Temperatures over the stated operating temperature, often caused by high current, can reduce the life of the components.
Over-current and over voltage can also cause damage to the components in the inverter, most often the inverter bridge. Generally damage is caused by excess heat generated by Voltage spike or current. Over-current may be avoided with the current fuse rating, but avoiding over-current can be difficult to eliminate totally. Sometimes grid voltage can spike also caused by lightning and solar flares. Ultrasonic vibrations originating deep In the cores of inductive components can ultimately cause friction, generating unwanted heat and ultimately damaging components in the inverter.
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Why Retrofit Your Solar Inverter?Taking into account Solar Inverter technology has improved immensely within the last ten years, components are more robust and can handle higher temperatures and allowing Increased warranties for the latest technology. At Premier Renewables we offer the latest technology to upgrade your system and improved yield generations.
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