Question....@saggys.......I was under the impression that the low idle kit is a factory installed option...If not I would like to install on my XP1100 , details pleaseExeltech XP1100 48 volt HF inverter
11 watt idle after low idle kit installed
Question....@saggys.......I was under the impression that the low idle kit is a factory installed option...If not I would like to install on my XP1100 , details pleaseExeltech XP1100 48 volt HF inverter
11 watt idle after low idle kit installed
You can contact Exeltech and they will ship you a kit for about $30. It consists of a section of heat shrink and a ferrite rod that you attach across the output? inductor. They will send detailed instructions as well.Question....@saggys.......I was under the impression that the low idle kit is a factory installed option...If not I would like to install on my XP1100 , details please
20 watts or so is perfect if it is putting out 120 or 240 volts sine wave. Should be way less than that if it's not. If it is only an inverter then maybe two or three watts when it is turned off would be about rightInteresting. It makes sense but, does 17-20w seem excessive? I'm not real good with my math on this stuff but, Mr. Sandals calculated it this way: 20W x 24hr = 480Wh (15% of battery!) That seems pretty significant.... The other parasitic draws (Watchmon, led lights on Blue Sea 120v panel, contactor, etc), seem to add up to about 3ish watts. I'm thinking I may pull the positive cable off the batteries to the MP, and then get a more solid sense of things but, all indications are from a clamp meter, and the shunt readings that the draw from the MP is real.
Interesting. It makes sense but, does 17-20w seem excessive? I'm not real good with my math on this stuff but, Mr. Sandals calculated it this way: 20W x 24hr = 480Wh (15% of battery!) That seems pretty significant.... The other parasitic draws (Watchmon, led lights on Blue Sea 120v panel, contactor, etc), seem to add up to about 3ish watts. I'm thinking I may pull the positive cable off the batteries to the MP, and then get a more solid sense of things but, all indications are from a clamp meter, and the shunt readings that the draw from the MP is real.
I assume inverters with huge idle draws have very large transformers that as a result, have high capacitance?
I do have a question though. On those units with big draw, say 100 watts, if you put let's say a 100 watt load on the thing, does it then draw 200 watts or does it fall into its efficiency rating and draw maybe 110 watts (just throwing out a random number) with a 100 watt load?
No. The typical Growatt, MPP solar, Voltronics, etc., are all lightweight HF inverters without heavy transformers, but have very high idle rates.
I have an old Dynamote Brutus Inverter that draws 96 watts at idle but at higher power levels the overall efficiency improves a lot, it‘s only at small loads or ideling that the 96 watt idle draw is a problem. Its effeincy is close to the big transformer Magnasine inverters at over 1 kw. It is rated 3200 watts but has a whopping 19,200 watt overload capability. It will start and run a larger motor than the Magnasine will, has a much bigger transformer and outweighs the Magnasine by a good 20 pounds, on par with the big Schneiders
Huh? I've always thought / understood they make HF and LF. HF ex, lv6548, tp6548, eg4 6.5k. LF ex lvx6048, tp6048, eg4 6k.No. The typical Growatt, MPP solar, Voltronics, etc., are all lightweight HF inverters without heavy transformers, but have very high idle rates.
I should have said more common.Huh? I've always thought / understood they make HF and LF. HF ex, lv6548, tp6548, eg4 6.5k. LF ex lvx6048, tp6048, eg4 6k.
Care to expand further?
Huh? I've always thought / understood they make HF and LF. HF ex, lv6548, tp6548, eg4 6.5k. LF ex lvx6048, tp6048, eg4 6k.
Care to expand further?
Heart Interface is probably who you were thinking of. Heart Ackerman and Steve Johnston started Heart. Then about a year later, Steve started Trace Engineering with a few others. Those others also worked at Phase Linear (Bob Carver) in the very early 1970s which was the "seed" basically for MANY Seattle area companies, both audio and inverter. I was at PL for a while. Phase Linear used to wind their own power transformers, as they did at Trace etc... so they knew how to do that already when the inverters came about.
Dynamote was the only company not part of that group. They were located partly in Shoreline (Brian Faley) but I think the company was down near Fremont or Magnolia. Brian Faley and Milt Rice were two engineers there. We worked with both of them at Trace and Magnum. Unfortunately, Milt Rice passed away by his ultralight around 2000 while he was at Trace. That was a sad time.
I would say that those HF inverters from China etc. do not have great idle power loss because they do not know that it is greatly wanted. So they don't work hard to reduce the idle.
And, usually, if an inverter has a idle or "tare" loss of whatever watts, that will not go down when you add a load to it. It is possible though to a certain extent I guess, but I would not think it would be much. Efficiency certainly goes up when you load it down a lot because the idle power becomes less than the actual load. I mean, 100 watts of idle or 10 watts of idle power, the efficiency is still zero when unloaded. Or is it negative ? ?
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