Jackery clicking - max voltage - series vs parallel

nschizzano

2 questions and i kind of think they are connected, possibly

Foreword: I have spoke with jackery a fair bit and I would like a second or third or fourth or fifth opinion, perspective and knowledge. Because I have Recieved different answers from them almost everytime. 

There is a relay clicking noise at sunset and sunrise, when voltage jumps around 135v ( the low end cut off of voltage 135-450v requirements. ) so it flicks on and off loud internal charging relays from accepting charge to declining charge for 10 to 20 minutes every night and morning. 

First off I dont know why this system does that and our custom made systems do not (ir maybe they do). And second of all I am begining to think its perhaps because I wired 1800 watts in series. (Maybe this set to doesnt like it) """series wiring is more sensitive to voltage changes and environmental fluctuations (such as shading or temperature changes) compared to parallel solar wiring."""

Second part if my discussion:

Recomended total string voltage for the Jackery explorer 5000 plus?

Jackery tech indicates 135v-450v which is true, but where should I land my volts on my set up.

Jackery Tech gives me different answers, last person said its safe and more efficient to go towards 450v

Before that several said right in the middle to be safe. Some say jackery have saftey cut measures installed, so no worries.

I like that answer but it occurred to me perhaps they do not know where I live, they never asked. meaning in minnesota 0°F can increase voltage around %10 and -40°F can increase voltage up to %25

Is that true?

Thats what I read! Im not sure the exact details or exact nature of this.

Does jackery have advanced systems that saftley dis-engage current if 450v is surpassed?

Perhaps I can disconnect a few panels before winter and set at which voltage?

Details on array:

I have 17 individual 100w panels strung in series creating a total of 387.79 total volts in VOC. Is using VOC correct or ?

My system often creates over 1806 watts (sounds good too yeah?)

If i add panels total VOC would look like this

18 Panels = 410.58

19 Panels = 433.37

20 Panels = 456.16

I want as much watts as possible. If I wire parralell I can get up to 4000 watts is that recomeneded or? Maybe I should do that

 

Thanks friends

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