I need help figuring out what to use to isolate my PV arrays from my PV inverters whenever necessary. I have 6 strings which are near 600 volts each. I'm not paralelling them, so I will have 6 strings in and 6 strings out. What should/could I use are a disconnect? I've done searches and having 600 volt strings seems to be rare. Feedback please!
600VDC STRINGS - BREAKER BOX OR DC DISCONNECT?
- Thread starter Ralo
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WYtreasure
It's not happy hour, I'm just like this.
600 volts seems to be a magic number. Could you reach higher than 600 volts at any time?
The more info you offer, the better the replies.
The more info you offer, the better the replies.
再生可能 エネルギー
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I was thinking about this David Poz video @17:27 "Couple wires a huge, High Voltage, Solar PV Array, 12.6kW"
but there is only about 300V for each string.
I reviewed few DC switches which seems to handle 1000V DC.
diysolarforum.com
but there is only about 300V for each string.
I reviewed few DC switches which seems to handle 1000V DC.
DC Quick Disconnect Switch Recommendation
I am looking for a Solar PV DC Quick Disconnect Switch and the only model that I can find is the AIMS Power PV array DC Isolator. The only issue that I have with this device is the 32A limitation both - from the use of MC4 connectors. - but also fromthe internal DC switch rated IEC 60947 1600V...
diysolarforum.com
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timselectric
If I can do it, you can do it.
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6 of these in a box , found lower on the page.
DC Miniature Circuit Breaker, 2 Pole 1000V 16 Amp Isolator for Solar PV System, Thermal Magnetic Trip, DIN Rail Mount, Chtaixi DC Disconnect Switch C16 https://www.amazon.com/dp/B0983ZB3VD/ref=cm_sw_r_cp_apan_glt_i_02ZE4TA0ZZ6A550STJ53?psc=1
DC Miniature Circuit Breaker, 2 Pole 1000V 16 Amp Isolator for Solar PV System, Thermal Magnetic Trip, DIN Rail Mount, Chtaixi DC Disconnect Switch C16 https://www.amazon.com/dp/B0983ZB3VD/ref=cm_sw_r_cp_apan_glt_i_02ZE4TA0ZZ6A550STJ53?psc=1
WYtreasure
It's not happy hour, I'm just like this.
Nice shootin Tex.
Read the small print, wire size, amps, etc. before spending $16 to stop 600 volts.
This looks promising! The specs of my panels are below. I have six strings, six panels each. I know that the voltage is added. Are the amps added as well? And if so, do I calculate the rated amps or the short circuit amps?
timselectric
If I can do it, you can do it.
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Voltage adds up in series.
Amperage adds up in parallel.
Amperage adds up in parallel.
timselectric
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Rated amp, are what's expected in perfect conditions.
And rarely ever seen.
And rarely ever seen.
Can you recommend an outdoor box? I really don't know what to choose.
Also, I found these switches? They are 4 pole so I would need 3 of them. Does this seen like a good option?
再生可能 エネルギー
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Which SCC do you plan to use?
I'm using Sunny Box 6.0 inverters. Two of them.
timselectric
If I can do it, you can do it.
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Two of these will give you 2 empty slots for future.
smseace Circuit Breaker Box Distribution Protection Box, ABS Plastic Transparent Cover Waterproof Distribution Box IP65, for Indoor Wall Circuit Breaker (8 Way ) https://www.amazon.com/dp/B0957BWHGD/ref=cm_sw_r_cp_apan_glt_i_JBAP455B0AEQXCS7PG9R?psc=1
Yes, those are good quality.
Just expensive.
Last edited:
RV10flyer
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I bought two of their 6 pole for my 400vdc 6 strings. It breaks pos and neg. Install a pullbox beneath if you want to install MNSPD600.
I was looking that the 6 pole version but they are so much more expensive. How much did you pay?
RV10flyer
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Call Jeff at Industrial Controls near Atlanta. Ph: (770) 274-3088. I don’t have the invoice in front of me or I would tell you. But I don’t think it was that much. Of course everything seems to have went up 25% since May of last year. They are very high quality.
timselectric
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That will work. However, I prefer to be able to shut strings down individually. I suppose you can turn off the switch and then disconnect the necessary string. And then turn on the switch to get the other string going again.
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