24V Inverter

[Jon]

We keep the coach plugged in. That means shore power is providing power to the inverter for battery float voltage, it keeps the refrigerator running, etc.

If power goes off, the inverter is no longer a charger, but is drawing power from the batteries to keep the refrigerator working. If the battery voltage is low the inverter can start the generator which will run until the batteries are satisfied. That cycle can go on for as long as you have fuel, or until shore power is resumed. The transfer switch upon seeing the restoration of shore power feeds power to the inverter which automatically stops converting and begins charging.

Obviously auto start is not such a good thing inside a closed building so if auto start is not set, the inverter keeps the refrigerator going until some low voltage setting is reached at which time it all shuts down. But during the time it was working it kept the food in the refrigerator protected.

[Brett G]

I just purchased the Magnum 4024 from this site and will be putting together a setup similar to Brian's.  $1656  http://beyondoilsolar.com/product/magnum-energy-ms4024-sine-wave-invertercharger/ 

[Tikvah]

It's not pure sine wave

[Brett G]

It's not pure sine wave

Manual says it is.  It should be

[Tikvah]

I don't see the words "Pure Sine Wave" anywhere.  I don't mean to argue, but I need one too and I'll never buy a Modified again. 

Your ad says "Magnum Energy MS4024 Sine Wave Inverter/Charger"

What is "Sine Wave".... pure or modified...or something else?

[eagle19952]

I don't see the words "Pure Sine Wave" anywhere.  I don't mean to argue, but I need one too and I'll never buy a Modified again.  

Your ad says "Magnum Energy MS4024 Sine Wave Inverter/Charger"

What is "Sine Wave".... pure or modified...or something else?

Congratulations on your purchase of the MS Series inverter/charger from Magnum Energy. The
MS Series is a "pure" sine wave inverter designed especially for rugged mobile applications, home
backup power and stand-alone applications. Powerful, yet simple to use, this inverter/charger
will provide you with years of trouble-free performance you have come to expect from Magnum
Energy.
Installation is easy. Simply connect the inverter's output to your distribution circuits or electrical
panel; connect your utility or AC generator power to the inverter's easy-to-reach terminal block;
connect the batteries, and then switch it on for power.
With the optional accessories listed below you can control and monitor many other Magnum
Devices.
The MS Series Inverter/Charger includes the following:
2000, 2800, or 4000 Watt Models in a small footprint - less weight and area needed for
installation
Pure Sine Wave Output
Automatic PFC (Power Factor Corrected) multi-stage battery charging
RS485 standard communication protocol
Remote and Network ports (easy connection for optional accessories)
ON/OFF Inverter-mounted switch with LED indicator
60 Amp AC Transfer available (using Dual IN/Dual OUT wiring)
Large AC access and terminal block [wire size: 14 to 6 AWG (2.1 to 13.3 mm2) CU]
DC terminal covers with 360 degree connection
Field Serviceable for qualified personnel - tested repair kits available
Smooth, aesthetically pleasing design
ETL listed to UL/cUL STDs 458, 1741 and CSA STD 22.2 107.01-01 for safety.
Automatic battery temperature compensation (using battery temperature sensor) - for
optimum charging even during extreme temperature changes
Over-current, over-temperature, and high/low battery voltage protection

http://magnumenergy.com/wp-content/uploads/2013/06/64-0007-Rev-A-MS-Series.pdf

[Tikvah]

Well, I stand corrected.  They could have mentioned it in their advertisement.  you would think it would be important. 
Some folks, like myself, lack the necessary gray matter to magically know that "Sine Wave" implies "Pure".

I have passed over this description in favor of a brand that says "Pure"

Thanks for the clarification... now I start down the road of decision once again.  I still lean toward my $899 unit - It says "Pure" on the label.

[eagle19952]

Well, I stand corrected.  They could have mentioned it in their advertisement.  you would think it would be important.  
Some folks, like myself, lack the necessary gray matter to magically know that "Sine Wave" implies "Pure".

I have passed over this description in favor of a brand that says "Pure"

Thanks for the clarification... now I start down the road of decision once again.  I still lean toward my $899 unit - It says "Pure" on the label.

You will be disappointed with it's charge rate and flexibility and it's short comings. Your battery life/costs will equal the initial costs of the Magnum MS series. Kind of a pay me now/later scenario. PROVIDED you pay less than suggested retail.....

Having said that I do not "need" a pure sine wave.... at least not yet.

[Tikvah]

Well I'll trade my Modified for a Pure any day.  I'm not really complaining, I didn't pay much for it.  But I can't run my mini-split.  I can't run my computer.  My phone chargers run hot.  I can't make coffee.  I'm afraid to turn on other sensitive equipment, like my wife's keyboard.  So, that rules out almost everything that matters. 

I can keep the refrigerator running while we drive... I guess that makes me happy.

Give me a Pure Sine Wave so I can use my other stuff too.

[eagle19952]

Well I'll trade my Modified for a Pure any day.  I'm not really complaining, I didn't pay much for it.  But I can't run my mini-split.  I can't run my computer.  My phone chargers run hot.  I can't make coffee.  I'm afraid to turn on other sensitive equipment, like my wife's keyboard.  So, that rules out almost everything that matters. 

I can keep the refrigerator running while we drive... I guess that makes me happy.

Give me a Pure Sine Wave so I can use my other stuff too.

Well.. heres what I would do.... specially if my modified SW had a good charger.... I'd set up a small bank of batteries and insert my "needs pure SW and rum those outlets thru a third AC panel (isolated from the rest) and figure a setup to charge it. Refrigeration is probably  a major concern. The A/C is going to need a big source of charge/storage. Good Luck with that.

[Dave5Cs]

Dave the Magnum white colored ones are Pure Sine Wave and the Hybrid have it right below the Magnum logo in Green letters and the Black ones are Modified. Modified are pretty much being outdated for major converters and the Pure Sine Waves are starting to go to the Hybrids like mine.

I was in the Bus today and it was pretty cold out there in 45 degree weather in cali this morning. So I did a little test. I was out there for about 2 hours on the computer having coffee which I made in the bus with a Mr Coffee at 1200 Watts as I had a 1500 Watt electric heater blowing, with 12, 40 watt lights on. When the coffee was done I heated up some water for my wife's tea in the micro wave. I have the Bus plugged into a 15 Amp plug at the house but the Inverter kicked in and supplied the rest. The charger kicked in when the batteries got down 30% and used the 15amp to charge the batteries back up within 20 minutes and everything still going when needed. I even plugged in a 13 amp skill saw outside to the outside plug on the bus with all the lights on and the heater going with the computer and TV on. It handled all of it with no problems.
The Hybrid share feather are awesome.

Dave5Cs

[Tikvah]

I was in the Bus today and it was pretty cold out there in 45 degree weather in cali this morning. So I did a little test. I was out there for about 2 hours on the computer having coffee which I made in the bus with a Mr Coffee at 1200 Watts as I had a 1500 Watt electric heater blowing, with 12, 40 watt lights on. When the coffee was done I heated up some water for my wife's tea in the micro wave. I have the Bus plugged into a 15 Amp plug at the house but the Inverter kicked in and supplied the rest. The charger kicked in when the batteries got down 30% and used the 15amp to charge the batteries back up within 20 minutes and everything still going when needed. I even plugged in a 13 amp skill saw outside to the outside plug on the bus with all the lights on and the heater going with the computer and TV on. It handled all of it with no problems.
The Hybrid share feather are awesome.

Okay Dave - that's pretty cool.  Didn't know that was possible.  So, let me get this straight.  It is merging both the power from the house (15a) and the power from the batteries to provide whatever is necessary?  In other words, it's not really switching from pole power to inverter power, but it's combining them together?  If that's true, that's awesome!  I can't tell you how many times we've been connected to 15a power and had to carefully dance between coffee, water heater, heat/ac, etc.  We would choose one at a time.  Obviously our inverter/battery pack won't run any of those because it's Modified.  But, I just assumed we would buy a Pure wave converter, but still do the dance when plugged into 15a.

Tell me if I'm understanding this all right? ?  ?
I got a hint of that in the previous posts... but so much of that stuff goes over my head... I'm really just a fourth grader. 
Thanks for dumbing it down for me.

Dave

[Debo]

Hey Tikvah. Yes, you have it correct. The Magnum hybrid inverters like Dave, myself, Brian, and others have has a "load sharing" feature. There are other inverters that have this feature too. I have mine set to draw no more than 15 amps from an extension cord that runs from my house. I'm able to turn on electric heat, a microwave - anything I want, for as long as the batteries can provide the extra juice needed. The moment I use less than 15 amps, the charger kicks in and starts to replenish the batteries. I'm able to run two 15K roof air conditioners from a 15 amp circuit using load sharing pretty much indefinitely. When the compressor(s) kick out, the batteries start charging again. It's the s%&t.

This feature was one important reason why I chose the inverter I did. I wanted to be able to pull into a friends driveway, have them run a 15 amp extension cord to me, and be good to go. I'm glad I bit the bullet and spent the money, although it's a pretty good chunk of change. I've been less smart about my generator. I've bought two now trying to do it on the cheap, when I should have just spent the money to begin with. I'd have come out ahead.

[Oonrahnjay]

... It handled all of it with no problems.
The Hybrid share feather are awesome.
Dave5Cs

    That's what I wanted to hear!  Thanks,  BH

[Tikvah]

http://beyondoilsolar.com/product/magnum-energy-ms4024-sine-wave-invertercharger/

Is this one set up that way?