Tariq Posted February 25, 2021 Posted February 25, 2021 The maximum voltage rating on the mppt is 500 volts, so should the surge protector be the same or higher/lower Quote
Richard Mackay Posted February 26, 2021 Posted February 26, 2021 Are these built into the inverter? There should be MOVs installed in the inverter.. Quote
Leshen Posted February 26, 2021 Posted February 26, 2021 8 hours ago, Tariq said: The maximum voltage rating on the mppt is 500 volts, so should the surge protector be the same or higher/lower Hi Tariq. 600v Type II should work fine. Quote
Tariq Posted February 26, 2021 Author Posted February 26, 2021 @leshen , i have access to a 1000 volt spd, will that work or is it like a circuit breaker that protects the wire, the current rating is less than the wire current carrying capacity Quote
Gerrie Posted February 26, 2021 Posted February 26, 2021 1 hour ago, Tariq said: i have access to a 1000 volt spd, will that work or is it like a circuit breaker that protects the wire, the current rating is less than the wire current carrying capacity To my knowledge the 1000V SPD will discharge any voltage bigger than 1000V the closer you can get to your mppt voltage of 500V the better. 600VDC SPD’s would probably be better than 1000VDC but if you already have 1000V you might as well just go with them. These SPD’s are normally rated 20 to 40KA so they can withstand lots of Amps before they fail. They are designed to keep the high voltages away not amperage. I have 600 VDC SPD’s on my Axpert that is only rated 115VDC and it has taken quite a few lightning strikes that had me worried at times but it seems to be doing its job. Quote
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