Joel Jahn
New Member
Any time I set the bulk charge setting above 58.4 volts The inverter surge at least 1 volt and it makes the generator hunt continuously. This is also the case when only on solar. What's up with that!
EG4 6000xp Surges like a bad governor on a Cummins engine.
- Thread starter Joel Jahn
- Start date
ScrotpusGobbleBottom
Cannibalism starts with a kiss.
What is the thd of your generator?
Describe the effect on solar more.
Describe the effect on solar more.
Joel Jahn
New Member
First what is THD? Battery voltage is at 58.4 and bulk charging. When sun is shining I have enough solar to smoke my 48kwh battery. And the inverter surges that same way above setting 58.4v. On one or the other input. Only recently started using the gen. Don't ask me what the voltage is once set above 58.5 cause it is surging at least 1 volt up and down. up down up down up down. Besides I need more that the limit of 59 volts to do Equalizing on lead acid batteries what gives on that setting limit, EG4?
ScrotpusGobbleBottom
Cannibalism starts with a kiss.
Quattrohead
Emperor Of Solar
Why are you setting it so high, there is no need to.
Joel Jahn
New Member
well I dont know what my THD is and why would that matter when the inverter surges with just solar anyways. and why would i set it so high is because it needs to run even higher when it equalizes my LEAD ACID batteries.
ScrotpusGobbleBottom
Cannibalism starts with a kiss.
SolarScott
Solar Enthusiast
- Joined
- Sep 27, 2022
- Messages
- 510
Thank God you are quatro head.....at least you have three not bitten off......
Joel Jahn
New Member
My EG4 6000xp definitely needs an firmware upgrade. I finally had enough sunshine to reaffirm that any setting above 58.4 V makes the charging surge when only using solar and/or generator. This is on lead acid settings with lead acid batteries. Also seems to have no Equalize functionality even though having been set four 1-day interval for two hours at 59 volts. That was set at least 48 hours before today's sunshine however the fact that I cannot get the actual charge above 58.4 without surging to the point of charge input completely disconnecting then ramping back up only to disconnect again. As far as when first coming up to voltage from a low state of battery charge things are much more stable when settings are above 56.4 (default) with only a .5 volt swing about every 2 seconds. At this time the fans are also ramping up in unison with the power surges. Upon reaching 58.5+ v. regardless of how much amperage the battery is taking the fans surge much more dramatically in unison with the complete disconnection and reconnecting to charge the battery. Hooked up to the Generator only just produces the same effect of a constantly surging engine which is annoying to say the least. The only time my old inverters did this was if the loads was variable and rhythmic in nature, which basically require me to turn a two-horsepower air compressor on and off every two seconds. My loads are not varying as such and are not the cause of my inverter surging. My lead acid battery manufacture specifies as much as 62 volts for equalization, not even close with these inverters.
Joel Jahn
New Member
Today I see the surging anytime I get up to the voltage set for bulking regardless of value set.
42OhmsPA
What's in a title?
ScrotpusGobbleBottom
Cannibalism starts with a kiss.
Where have they been??
wpns
Solar Joules are catch and release
Could be battery wiring, can you describe it and also post some pictures?
42OhmsPA
What's in a title?
Joel Jahn
New Member
WPNS, please explain why it can be battery cabling. I already know all about Ohms Law. Show your math that it can be battery cabling on Lead acid Battery and settings. And explain why!
wpns
Solar Joules are catch and release
Say your battery cables, connections, lugs, fuse holders, whatever have 100 milliohms of resistance. When you push 10 amps of current through your cables the inverter will read 1 volt higher than the batteries and stop charging. When the current goes to zero, the inverter will read the actual (liwer) battery voltage and start charging again.
Use your own values for the above and you’ll see it might be possible.
Use your own values for the above and you’ll see it might be possible.
rogerheflin
Solar Enthusiast
My eg4-18kpv's fans seem to turn on when the inverter load is over about 6kw, I finished installing my last 4 panels and found out the fans also turn on if the charger circuit is delivering more than 6kw. Given a 6000 is smaller I would suspect the fans get turned on at around 3kw. And when running the fans do spin up/down as load and probably heat sink temp increases/decreases.
wpns
Solar Joules are catch and release
It does seem pretty-emptive though, as soon as the Sun comes out the fans spool up.
rogerheflin
Solar Enthusiast
preemptive based on simple load calcs is much simpler that doing a slightly more complicated when temp is above this turn fan up.
Intel cpus from 15 years ago had a air temp sensor and controlled the fan speed based on the air coming into the heat sink and had no sensor actually on the cpu side itself. And said fan did not work well under any load over 5000ft(thin air-only 80% cooling capacity) until we fixed the temp sensor to always read maxed out.
My 18kpv seems to spin its fans up rather fast--almost immediately when the dryer gets turned on. And mine is sitting in a nice cool room. It seems rather like the only feedback is the load itself. If the 18kpv is that bad of a design, the 6000 has to be at least as dumb if not dumber.
wpns
Solar Joules are catch and release
I’m still tracking down the details of the 18Kpv fans, but the fan mfr claims they are custom fans with Locked Rotor outputs, not Tachometer outputs, so there’s still a bit of confusion to grind through. 
Joel Jahn
New Member
WPNS, Ya No it would still be steady charging just at a volt off. and my fans are going higher with the volt/ amps going up and down. Just like they are supposed to do. What is happening is the volts don't stay steady. They surge by about a volt almost faster than my voltmeter can keep up.
wpns
Solar Joules are catch and release
Just a suggestion, hope you figure it out.
Joel Jahn
New Member
The surging is because these inverters literally over run the voltage settings at higher lead acid settings. When charging battery, it will go above what the inverter high voltage operating specs are and do a hard charging shut down and then upon returning to as low as 51volts ramp back up to shut down voltage and repeat. Very bad inverters for Lead acid batteries. I know this because I have the paired inverter in the off EPS mode actually turns off and on while the battery charges with both inverters and the voltmeter goes up above 60 volts and the green light goes out when it hits 60volts. I wonder if this is happening to you Lithium owners and you just don't know it?
ScrotpusGobbleBottom
Cannibalism starts with a kiss.
This sounds terrible~ Any word from EG4?
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