Recent content by Abodyofscience

Neglecting losses & such, I get 48vdc x 60Adc = 2880w into the batts. 30A x 240vac = 7200W. Your gen is then loaded to 2880w/7200w = 0.4 = 40% of capacity, so 0.4 x 30A = 12A AC.

2000 kwh/yr x yr/8760 hrs. The yrs & the hrs cancel out & you get 2000/8760 kw = 228 w continuously. Our house takes 1 kw continuously [the US average] & houses in the NE take 4x this.

The voltage regulator controls the alt. output by varying the voltage to the field coil, assuming a high enough RPM [1500 or so]. I'd look there to see why you're not getting rated output.

Your system is oscillating, an "undamped" oscillation. It whacks into the high limit voltage & then the low limit voltage, acting like a "bang-bang" control system. https://en.wikipedia.org/wiki/Bang–bang_control Better is a proportional control system. Maybe the BMS needs a minimum battery...

Lately when they call, I ask them if "they got the letter". Them: What letter? Me: the government is prosecuting you & your company for wire fraud. I'm surprised you're not in prison right now, you & your boss.

The hair dryer pulls 10A or so & allows you to measure contact resistance in the milliohm range. >>>>contact resistance of 3 milliohms >>>>10A ......^.......................................................^ ...............voltmeter reads 30 mV. The DVM prods should not touch the leads that pass...

Fuses I've seen can hold between at 100% & 115% of rated capacity, "forever." You have to see the "clearing time" curve. It's usually plotted on log-log paper. https://m.littelfuse.com/~/media/electrical/application-notes/powr-gard-technical-application-guide.pdf see page 9.

If a company doesn't honor a warranty, pretty soon everybody knows about it & so they're pressured to honor the warranty. But some companies choose to sue anyone who badmouths them, regardless of the truth.

It should. 70% good shipments gives you 50-50 random chance of having both good. With 3 shipments your chance is 1/3 all good. To get the base rate of good shipments we need to hear from many others as to what percent of shipments were bad, out of how many shipments. Of course, if you notify...

If you get the programming wrong, I guess the worst is, it doesn't work. I'd hope these intelligent devices protect themselves from operator error & bad configurations but there is always a "Black Swan event". And they can't be reduced to some simple equivalent circuit using a voltage source...

A panel not running at the open circuit voltage while in light looks like a current source. If one panel can deliver 10A & the other, 5A, & you put them in series you should only get 5A. I guess it's like a 10A fuse in series with a 5A fuse. . .the combo clears at 5A.

For a series pack it should make no difference, all the cells will be drained at the same amps.

If your panel is mounted at a 45 deg angle, you'll get 71% of full sun [100 x cosine of 45 = 0.707]. If at 30, 86.6% of full sun. Shade may count as 16% of full sun & the angle may not matter.

On the 200v scale it would read 199.0v full scale, so your reading was 78.0? MM300 accuracy is 0.8% of 200v + 3 digits. 0.8% of 200v = 1.6v so a true voltage of 78.00000 could read 78.0 + 1.6 + 0.3 = 79.9v If your Epever has the same specs, a true voltage of 82.00000 could read 82 - 1.6 - 0.3...

Losing 0.4v at reasonable current levels seems like a corroded connection, so trace down what connection is doing this. It's unlikely that four connections are losing 0.1v each.