Back up power

Re: Back up power

PostBy: 009to090 On: Sat Sep 05, 2009 10:10 am

My Homemade UPS for my DVC-500.....

Building a TRUE Sinewave UPS for my DVC-500
009to090
 
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Re: Back up power

PostBy: GettingStoked On: Sat Sep 05, 2009 12:49 pm

I think what I need to do is just take my owners manual to one of the electrical shops and let them get me the proper sized wire and fuse. That is really all I need.. I have the inverter/charger just not the wire that it requires.

DVC500 at last wrote:My Homemade UPS for my DVC-500.....

Building a TRUE Sinewave UPS for my DVC-500
GettingStoked
 
Stove/Furnace Make: Alaska
Stove/Furnace Model: Channing III

Re: Back up power

PostBy: jrn8265 On: Wed Sep 09, 2009 7:25 am

Gettingstoked. I have the aps750 also connected to my stoker....I use the batteries that come with the unit as an option...75ah sealed gel...12 volt......I connected the batteries to the aps and have used no fuse in between...I see no problem doing this, maybe a marine battery is different?
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Re: Back up power

PostBy: GettingStoked On: Wed Sep 09, 2009 8:52 am

Are the batteries that your using that came with it internet? If so, they are probably using a built in fuse.. For the external (I believe regardless of the type) has to have a DC fuse within 18" of the battery. I think the fuse is around 20 to 30 but heck, if that is what they say to do, who am I to say otherwise. Found out I can get eveything at granger if I can't get it from the local electical supply house.

jrn8265 wrote:Gettingstoked. I have the aps750 also connected to my stoker....I use the batteries that come with the unit as an option...75ah sealed gel...12 volt......I connected the batteries to the aps and have used no fuse in between...I see no problem doing this, maybe a marine battery is different?
GettingStoked
 
Stove/Furnace Make: Alaska
Stove/Furnace Model: Channing III

Re: Back up power

PostBy: jrn8265 On: Wed Sep 09, 2009 8:59 am

jrn8265
 
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Re: Back up power

PostBy: Art_Baxtr On: Wed Sep 09, 2009 1:18 pm

I just picked up a used APC 1500 SmartUPS and wired two deep cycle batteries to it for a backup power solution for the winter. I don't know what the time range will be yep because I haven't been able to run it through a full test. The only real consideration I was worried about was how smart the UPS was that I used. Some of the cheaper models for home use only have trickle chargers as opposed to Float chargers, so that is why i went with a 1500 SmartUPS. Other than that i don't have any worries about the setup, just really curious to see how long of a draw i can place on it. Total cost was under $200 for the setup. Well worth it in my opinion.
Art_Baxtr
 
Stove/Furnace Make: Leisure Line
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Re: Back up power

PostBy: jrn8265 On: Wed Sep 09, 2009 1:52 pm

Art_baxter, how did you connect the batteries to the ups? I have one and might do the same to keep our fridge working! Thank you!
jrn8265
 
Stove/Furnace Make: Keystoker Koker
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Re: Back up power

PostBy: coaledsweat On: Wed Sep 09, 2009 2:12 pm

jrn8265 wrote:maybe a marine battery is different?

The big difference is a marine battery has a much deeper cycle, it can take a lot more abuse.
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Re: Back up power

PostBy: buickanddeere On: Wed Sep 09, 2009 6:10 pm

Art_Baxtr wrote:I just picked up a used APC 1500 SmartUPS and wired two deep cycle batteries to it for a backup power solution for the winter. I don't know what the time range will be yep because I haven't been able to run it through a full test. The only real consideration I was worried about was how smart the UPS was that I used. Some of the cheaper models for home use only have trickle chargers as opposed to Float chargers, so that is why i went with a 1500 SmartUPS. Other than that i don't have any worries about the setup, just really curious to see how long of a draw i can place on it. Total cost was under $200 for the setup. Well worth it in my opinion.


Probably 1500 volt amps for 5 minutes and 1200VA continuous. Wattage maybe 1000-1100 continuous? It's up to the amp hour capacity of the batteries for how long they last. Inverter vender's list capacity in both large and small print.
Don't expect to obtain 2000 amp hours from a battery pack rated at 2000amp hours on a continuous high draw. You will obtain 1/2 to 2/3 capacity and some very hot batteries and hydrogen gas floating around.
Lead acid gel cells in particular take a beating with high discharge and charge rates.
Just because a battery pack is rated at say 2000 amp hours doesn't mean it should be discharged by 2000amp hours of load. A couple of deep cycles and capacity will be permanently reduced.
The battery side should be fused. A fault will draw enough current to either melt equipment and start a fire. Or blow a battery and spray acid over the area.
buickanddeere
 

Re: Back up power

PostBy: Poconoeagle On: Thu Sep 10, 2009 12:43 am

Lithium polymer full draw right to the end. big money but hordes of power.
has a good fire starting ability to them too :roll:
Poconoeagle
 
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Re: Back up power

PostBy: Art_Baxtr On: Thu Sep 10, 2009 2:00 pm

jrn8265 wrote:Art_baxter, how did you connect the batteries to the ups? I have one and might do the same to keep our fridge working! Thank you!


I connected the batteries in series using the same quick connects that the original batteries used. That was the nice thing about using the APC 1500, it has quick connects for the batteries, I just modified them to fit larger batteries. The system has a built in fuse, but i also place a 40 amp fuse between the batteries for safety.
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Stove/Furnace Make: Leisure Line
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Re: Back up power

PostBy: Art_Baxtr On: Thu Sep 10, 2009 2:04 pm

buickanddeere wrote: Don't expect to obtain 2000 amp hours from a battery pack rated at 2000amp hours on a continuous high draw. You will obtain 1/2 to 2/3 capacity and some very hot batteries and hydrogen gas floating around.
Lead acid gel cells in particular take a beating with high discharge and charge rates.
Just because a battery pack is rated at say 2000 amp hours doesn't mean it should be discharged by 2000amp hours of load. A couple of deep cycles and capacity will be permanently reduced.
The battery side should be fused. A fault will draw enough current to either melt equipment and start a fire. Or blow a battery and spray acid over the area.



No i didn't expect to gain that much efficiency out of the system I was look at best for half. I def placed a fuse on the battery side as well, i don't need to have an acid explosion. Also i placed both batteries in separate battery boxes with Baking Soda in the bottom of each box in case something does happen. While both battery boxes are placed in another larger box to secure the entire system and ease of mobility.
Art_Baxtr
 
Stove/Furnace Make: Leisure Line
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Re: Back up power

PostBy: GettingStoked On: Thu Sep 10, 2009 2:49 pm

Went to the local electric place and got some 6 guage wire.. went to and advanced auto and got the terminal clamps and wo-la. Still am going to get the DC fuse.. but for now it's running and charging my deep cell battery. When the charge is done, I'm going to let it run my dehumidifier and see how long it goes. :D One more thing off my list of things to do before the season starts.
GettingStoked
 
Stove/Furnace Make: Alaska
Stove/Furnace Model: Channing III

Re: Back up power

PostBy: buickanddeere On: Thu Sep 10, 2009 10:42 pm

If the inverter input is 12V and the output is 1200W. Current on the 12V input side will be 110-115amps. #6 wire is going to get hot and a 40amp fuse is going to go poof.
buickanddeere
 

Re: Back up power

PostBy: GettingStoked On: Fri Sep 11, 2009 9:03 am

Buickanddeere, not sure if your replying to my post or a previous post (quoting helps in that regard) but here are the specs for my setup jsut in case...

Tripp Lite APS750 inverter/charger 750 watt.
Wire: 6 guage up to 10 feet (per tripp lite tech support)
DC Fuse: 150 amp. (still have to order this).

I did a test with a standing fan and it ran for over 6 hours and only brought the battery down to the 80% to 90% charge range. nice.

buickanddeere wrote:If the inverter input is 12V and the output is 1200W. Current on the 12V input side will be 110-115amps. #6 wire is going to get hot and a 40amp fuse is going to go poof.
GettingStoked
 
Stove/Furnace Make: Alaska
Stove/Furnace Model: Channing III

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