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| Tranceilvania |
Anything Electrical/Electronics ask your questions here!==>
http://www.austech.info/forumdisplay.php?f=76
My suggestion would be the DC/AC inverters operated from a car battery as they would be cheaper at required power levels!!! (I assume u gonna need at least couple of Kilowatts of power depending on the size of the event though). May have to run the cars from time to time to recharge the batteries though :p
Jaycar electronics has a variety of them. There are a couple of really large models which I think adequetly can supply power levels required. If required more than two units can be utilized!
Cheers...... |
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| Nic |
| quote: | Originally posted by Tranceilvania
Anything Electrical/Electronics ask your questions here!==>
http://www.austech.info/forumdisplay.php?f=76
My suggestion would be the DC/AC inverters operated from a car battery as they would be cheaper at required power levels!!! (I assume u gonna need at least couple of Kilowatts of power depending on the size of the event though). May have to run the cars from time to time to recharge the batteries though :p
Jaycar electronics has a variety of them. There are a couple of really large models which I think adequetly can supply power levels required. If required more than two units can be utilized!
Cheers...... |
i doubt you are going to be able to use cars for this, i know my alternator puts out something like 60-70A peak, at idol its probably only something like 40A, 40A at 12V is only 480w, this is probably a generous estimate too considering the car electrics will use some of this power, this is not even going to be enough to run the equipment let alone charge the batteries back up too.
Also completly draining standard car batteries isnt good for them, it will shorten their useful life and the amount of power they will store.
So either use cars with big alternators and good batteries that are designed to be deep cycled like the optima yellow ones or ditch this idea |
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| Tranceilvania |
Hey do not underestimate the car batteries, they minumum put out a whopping 300A power without the help of an alternator. A good size battery providing that the car runs on idle should last very long hours no problems! A generator would be better but the price range for a good one would be prohibitive.
Plus most hi-power inverters have good regulation and protection against surges and drains... |
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| Nic |
| quote: | Originally posted by Tranceilvania
Hey do not underestimate the car batteries, they minumum put out a whopping 300A power without the help of an alternator. A good size battery providing that the car runs on idle should last very long hours no problems! A generator would be better but the price range for a good one would be prohibitive.
Plus most hi-power inverters have good regulation and protection against surges and drains... |
Even a decent battery isnt going to have the capacity of more than about 50AH, so at 300A you could run the system for a grand total of.... 10 minutes, or 10 and a half minutes with the alternator running.
300A may be a reasonable number for CCA, but there is no way an ordinary car battery would put up with that kind of constant abuse
Even at 100A (1200w) the system will only stand up for half an hour, you could probably push that too 2 hours having the alternator running depending on the size of the alternator and the size of the battery, 2 hours isnt much of a party |
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| G`Dave |
Agreed, a car battery wouldn't do it for you, even a deep cycle SLA battery would't last the distance.
I would hire a generator from Aggreko if you are looking for something beefer that what you can find at home use level.
There are many places the hire them out, try looking in the yellow pages. |
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