Solar Training - Dangers of Series & Parallel Arcs

Learn about the dangers of series and parallel arcs and how these occur in solar photovoltaic (PV) systems.

[@educationpower1823]

Absolutely awesome. Thanks

[@magicswar1502]

🌟🌟🌟🌟🌟 Deep Thanks to Mr. Marc from Yemen, with five stars for ur great videos, clear explanation, easy to understand, and it was very useful to me .... i appreciate that.

[@insanerc]

So what's the solution? Why offer a problem scenario if you're not going to offer a solution? Makes no sense.

[@amranmohamad2641]

Excellent PResentation...well done ..

[@kennethverhoeven3972]

at the parallel arc wouldnt there be 32A of current since the strings are all still connected in parallel? if the inverter shuts down the arc is basically shorting the whole pv array but then all cables should be rated for 32A instead of 8 or else they will melt or you would need fuses at the terminals of each string, i think, or if you have a fuse/breaker for each string in the combiner box right before the live busbar wouldnt that breaker trip for the string with the parallel arc since the current of the 3 top strings is trying to pass there

[@ingussilins6330]

Need distance tripping individual solar panel circuit breaker - when arcing, protection circuit triping all MCB's.

[@sakinamohamed2359]

thank you teacher for all informations . can we simulink the arc in pv system?

[@Jorge-Molina]

Are the arcs between a conductor and ground similar to the arc in parallel?

[@Doctorbasss]

On the parallel arc scenario.. then why the inverter could not detect it and short that array directly at the inverter input?.. the PV are current source with maximum limit so there would not have any overcurrent problem and current would find his short path thru the inverter input that is automaticlaly dead shorted to 0V... so the only voltage present would be the resistive loss in the wire between the inverter input and the no more possible arc! =)

[@jmv4004]

Yes, the presumption that the inverter can only stop the current is wrong. It should also be able to bring down the voltage of the panels to a very low level. However, that's not the usual way that the system is brought down. A firmware modification should make this possible, with very clear signals to the user what is happening, and very clear instructions how to proceed, such as waiting for sundown to dismantle. Also, usually the inverter needs at least a 100 V to run.

[@dj-jazzy-jimbob]

But if you have modular level rapid shutdown it could halt a parallel arc

[@Belkacem-xm1rn]

Very useful indeed

[@xzxzt4]

nice,,,,,,,, well explained

[@marktheunitedstatescitezen185]

I have a Very good Question for you “ can you take 2 different battery Ah but the same Voltage “ put them in Parallel the First bank 48v 280Ah and can you put in parallel a 48v 40Ah bank to help regenerate the Electricity used ? And if not because of the Ah - can you use an Active Balancer say 31S voltage does not matter you connect 31 batteries together as if they are parallel but the batteries are not physically connected so you have 31 Lithium Phosphate batteries connected to the Active Balancer and you have 15 batteries in series connected together + to - so on for only 15 batteries and the extra 17 batteries are to help keep the electrical charge constant- Can this be done ? Only 15 Batteries are on the same DAILY 15S 120A BMS but you have 31 Batteries all Connected through an Active Balancer ! Can this be done ?

[@acefire4050]

I don't understand why my solar charger tells me I'm charging my batteries at 36 a 48 amps 52 amps sometimes 27.5 and I have several solar cuz I need to combined strength to the house they have less chargers and I don't mind the amps what I'd be more worried about is the votes and every 10 watch that the charger takes it turns it into an amp that's why I don't mine the amp so much.

[@chyfran-EFM]

What type of circuit protection do we need to prevent series & parallel arcs

[@Jhovan33]

A lot of talk about problems but not much on preventing them.

[@dj-jazzy-jimbob]

Modular level shutdown with with micro inverters or optimizers

[@chada472]

Whats the best way to find a series fault?

[@michaelcostello6991]

Look like you could easily get electrocuted with parallel arc as no protection if you touch both wires + -

[@MultiOutdoorman]

i guess a double pole afdd might help ?

[@electroumit]

Where is sample?