Search found 498 matches

by pss
Sun Jan 14, 2018 12:23 pm
Forum: My OutBack Power System
Topic: Outback VFX3648 AC input maximum
Replies: 6
Views: 4232

Re: Outback VFX3648 AC input maximum

According to Outback spec sheet, that inverter has only a 45 ADC continuous charging output. That is small. Your battery bank is big. Your panel wattage is small. Your batteries will require charging from generator and or the grid and will take a long time because your inverter's charger is small ca...
by pss
Sun Jan 14, 2018 12:06 pm
Forum: FLEXmax Charge Controllers
Topic: Coordination of output between multiple Flexmax controllers
Replies: 12
Views: 4854

Re: Coordination of output between multiple Flexmax controll

Mike, i agree with your info. But I have been doing some thinking and if you set the charge rate per your calculations, you may possibly limiting your PV output depending on your load. I have experimented with increasing the charge rate above your calculations and I have improved the amount of amper...
by pss
Sun Jan 14, 2018 11:57 am
Forum: Flex Power One
Topic: Panel hook up advice for a newbie
Replies: 12
Views: 9142

Re: Panel hook up advice for a newbie

Midnite Solar combiner. Also, their breakers for the box. Get a DC disconnect switch, one that is fuse capable and a lightening arrestor for the combiner box.. Ground all of your panels at the array with a grounding rod into the ground.
9 panels is better than 8.
by pss
Sat Jan 13, 2018 6:14 pm
Forum: Flex Power One
Topic: Panel hook up advice for a newbie
Replies: 12
Views: 9142

Re: Panel hook up advice for a newbie

Mike, from what you wrote, if your panels were 2 x 2, your input voltage to charge your batteries would be 51.8 volts, not enough to charge a 48 volt battery bank reliably. That is because the power of your panels is too low. Only 180 rated watts. If you put three in series, it would become 77.7 vol...
by pss
Sat Jan 13, 2018 7:33 am
Forum: Off Grid Applications
Topic: 60 volt or 48 volt battery bank questions
Replies: 2
Views: 1362

Re: 60 volt or 48 volt battery bank questions

I guess that's why they call it an 8048a and not an 8060a.
I was looking at the spec nominal voltage to 60.
Thanks.
by pss
Fri Jan 12, 2018 4:59 pm
Forum: Flex Power One
Topic: Panel hook up advice for a newbie
Replies: 12
Views: 9142

Re: Panel hook up advice for a newbie

Your panels do not have to have a 48 volt input. What you have to have is a panel voltage about 15-20 volts above your battery bank voltage as ideal. This allows for equalization of the batteries. But, you can always equalize with the charger on the inverter using a generator or the grid. You said y...
by pss
Fri Jan 12, 2018 4:54 pm
Forum: Flex Power One
Topic: Panel hook up advice for a newbie
Replies: 12
Views: 9142

Re: Panel hook up advice for a newbie

I think you do not have to worry about clouds with a 2 x 4 arrangement. I know, cause I use one. Your voltage will be at least 58 volts on cloudy days and your MPPT controller will usually charge at about 54-56 volts, so no worries. That is the real facts. Your amperage is low on cloudy days, but vo...
by pss
Fri Jan 12, 2018 4:44 pm
Forum: Off Grid Applications
Topic: 60 volt or 48 volt battery bank questions
Replies: 2
Views: 1362

60 volt or 48 volt battery bank questions

I would like some opinions and real world experience on wiring batteries for 48 vs. 60 volts. I can configure 4 strings of 8 batteries for 48 volts, 900 amps and 43,200 watts or 3 strings of batteries for 60 volts, 675 amps and 40,500 watts. I have a Radian GS8048A inverter. Is there any inherent ad...
by pss
Fri Jan 12, 2018 4:33 pm
Forum: Flex Power One
Topic: Panel hook up advice for a newbie
Replies: 12
Views: 9142

Re: Panel hook up advice for a newbie

That model inverter accepts a 48 volt battery bank. Your panels are 8 at 295 watts = 2360 watts. If you connect in a 2 x 4 array (2 in series, then 4 in parallel), your will Voc will be about 80 and your system will use a combiner box with 4 circuit breakers at 15 amps each. Your input would be a Fl...
by pss
Fri Jan 12, 2018 12:01 pm
Forum: FLEXmax Charge Controllers
Topic: Coordination of output between multiple Flexmax controllers
Replies: 12
Views: 4854

Re: Coordination of output between multiple Flexmax controll

Mike, thanks for your input. I think the current load definitely has something to do with it. My system behaves as follows: If batteries are say below 92% charged, then the PV power will equal load + 3000 watts. As the batteries get closer to 100% charge, while still in bulk, the system PV power wil...
by pss
Thu Jan 11, 2018 9:56 pm
Forum: FLEXmax Charge Controllers
Topic: Coordination of output between multiple Flexmax controllers
Replies: 12
Views: 4854

Coordination of output between multiple Flexmax controllers

I would like to know if anyone actually understands how the Mate3, Radian inverter and Flexmax CC's actually coordinate power output. In my case, I have 3 Flexmax CC's connected to 3 individual arrays. Lets call them Array 1,2 and 3. And Flexmax 1,2 and 3. Sometimes in the day, power output from all...
by pss
Thu Jan 11, 2018 9:42 pm
Forum: FLEXmax Charge Controllers
Topic: Bunch of FLEXmaxs with one Radian?
Replies: 1
Views: 1627

Re: Bunch of FLEXmaxs with one Radian?

Maybe this will help. In Michigan, your array will do best if you can at least raise and lower the angles of the panels that are facing south. Say like 45 degrees up in the winter due to the low angle of the sun and maybe 15 degrees up in June. You can figure out the angle for the months in between ...
by pss
Thu Jan 11, 2018 9:00 pm
Forum: FLEXnet DC
Topic: best procedure for coordinating voltage readings
Replies: 14
Views: 9513

Re: best procedure for coordinating voltage readings

Wow, this thread is a little messy. Here is how to find and confirm your actual battery voltage. Put your meter on the leads going into the load center or inverter. On the Mate3, press the third key from the left which should be underneath the little inverter icon. Then press the button labelled Nex...
by pss
Thu Jan 11, 2018 8:48 pm
Forum: Grid Tie Applications
Topic: I rather not use 3 charger controllers
Replies: 13
Views: 9045

Re: I rather not use 3 charger controllers

I read your thread. I use 8 Solar world 340 XL panels with a Flexmax 60. Rated output would total 2720 watts. Set up a 4 x 2, Voc max has been 91.4 volts. Maximum array output has been 2597 watts. I am in Southern California, the lowest ambient temps with the sun on the panels is about 55-60 degrees...
by pss
Sat Jan 06, 2018 8:22 am
Forum: Backup Applications
Topic: wire battery bank neg. post to ground bus?
Replies: 4
Views: 4423

Re: wire battery bank neg. post to ground bus?

Regarding the metal battery enclosure, in my location in Southern California, state code regulations require batteries to be in metal boxes or on metal shelves, not wooden, with adequate ventilation if flooded lead acid. I simply used a strong metal shelving unit. Wood is not allowed due to risk of ...
by pss
Tue Jan 02, 2018 4:20 pm
Forum: Mate
Topic: No Devices found
Replies: 6
Views: 6402

Re: No Devices found

Just to be certain, your Mate must be plugged into the first port of the Outback Hub. When you do this, it should cycle and find all other devices connect to the Outback Hub. In my case, after my mate 3 is plugged into the very first port, my radian inverter is plugged into port 1, Flexmax charge co...
by pss
Sun Dec 31, 2017 8:10 am
Forum: OutBack
Topic: Water pressure pump selection and battery life
Replies: 9
Views: 5645

Re: Water pressure pump selection and battery life

This maybe stupid, but it is possible to just cut the power to the pump from say 8 PM till 8 AM saving the draw on the batteries? Either manually or with a mechanical timer on the circuit. This would be much cheaper rather than replacing your pump. You are in an analogous situation to our swimming p...
by pss
Sun Dec 31, 2017 8:02 am
Forum: OutBack
Topic: motor starting issues
Replies: 11
Views: 4764

Re: motor starting issues

I would try to use a torque wrench on all of your terminal connections to make sure they are to specs and equal. They are not expensive and very useful to have. 5 degrees is not significant. Three phase power will have no advantage for you and a lot of expense. Three phase power is usually only avai...
by pss
Sat Dec 30, 2017 5:55 pm
Forum: OutBack
Topic: motor starting issues
Replies: 11
Views: 4764

Re: motor starting issues

Sorry about the grid tie comment, I got confused. A 1.5 HP motor will draw about 1100 watts after starting. In your case, 20 amps for one is 2400 watts at 120 volts, 1800 watts for the 15 amp load, but those are usually the circuit needs, not the induction load of the motor. Circuit breakers are des...
by pss
Sat Dec 30, 2017 12:05 pm
Forum: OutBack
Topic: motor starting issues
Replies: 11
Views: 4764

Re: motor starting issues

A good technique to check cable connections at battery terminals is to use a laser temperature measurements hand held device and make sure all are at same temp, no hot or cold joints. Also, a jointer usually has a smaller motor than a table saw. I have a Delta DJ-20 and I believe it is 2hp, and it i...
by pss
Fri Dec 29, 2017 8:16 am
Forum: OutBack
Topic: motor starting issues
Replies: 11
Views: 4764

Re: motor starting issues

Well I do a little woodworking. Here is your issue: A 2 HP band saw motor draws 1500 watts of power when it is running. However, electric motors require a large induction current to start them spinning. If you examine your motor housing, you should see 2 small cylindrical objects bolted to the motor...
by pss
Fri Dec 29, 2017 7:46 am
Forum: OpticsRE
Topic: Planned OPTICS RE Maintenance - Thursday December 28, 08:00
Replies: 2
Views: 11211

Re: Planned OPTICS RE Maintenance - Thursday December 28, 08

My system last connected to Optics RE at 8:32 AM pacific time on December 28 and had to power cycle my Mate3 to get back on line. Looks like I lost 24 hours of data.
by pss
Fri Dec 22, 2017 4:23 pm
Forum: Off Grid Applications
Topic: How to size a new generator
Replies: 12
Views: 4878

Re: How to size a new generator

Well, I think you need a little more help on what the equipment does. The charge controllers are powered by connection to the batteries, not the PV. No batteries, no charge controller displays. Once the charge controllers detect PV input, they wake and begin a three stage charge cycle programmed int...
by pss
Fri Dec 22, 2017 1:44 pm
Forum: Off Grid Applications
Topic: How to size a new generator
Replies: 12
Views: 4878

Re: How to size a new generator

Wow, lots of stuff to consider here. First off, your 1110 amps of batteries, is that the 20 hour rated capacity? Secondly, the Flexmax 80 controller would handle about 4000 watts of panels with an output voltage of 60 volts to charge a 48 volt battery bank. I don't believe I caught the voltage of yo...
by pss
Fri Dec 22, 2017 1:23 pm
Forum: MX60 Charge Controller
Topic: FM60 SHOWS INPUT VOLTAGE AND BULK CHARGE MODE
Replies: 1
Views: 3275

Re: FM60 SHOWS INPUT VOLTAGE AND BULK CHARGE MODE

I would be most concerned that you say there is input voltage from a source at night of 58 volts. Solar panels don't generate voltage at night, but they can in a full moon situation. So I would suggest that at night, if the CC shows an input voltage, you measure the voltage directly at the terminals...