Apr-15-2023 07:06 AM
Apr-18-2023 01:00 PM
Apr-18-2023 11:58 AM
theoldwizard1 wrote:
Here is the short electrical engineering of what is happening.
All electric motors that power heavy loads have a "starting capacitor" (there is a mechanical switch that cuts out the capacitor once the motor is "up to speed").
When a capacitor is fully discharged (before the motor starts), it "looks like" a short circuit when power is first applied. Additional/larger starting capacitors just make this worse. The MicroAir actually "limits" (slows down by a few hundred microseconds) how fast that capacitor charges up eliminating the current spike.
Apr-18-2023 11:51 AM
3 tons wrote:
... my view is that the Autoformer is no substitute for a Micro-Air, because of it’s slower response time, a characteristic of it’s slower transformer based induction response time versus the MicroAir’s near light-speed response mosfets…
Apr-18-2023 08:44 AM
theoldwizard1 wrote:3 tons wrote:
... my view is that the Autoformer is no substitute for a Micro-Air, because of it’s slower response time, a characteristic of it’s slower transformer based induction response time versus the MicroAir’s near light-speed response mosfets…
Here is the short electrical engineering of what is happening.
All electric motors that power heavy loads have a "starting capacitor" (there is a mechanical switch that cuts out the capacitor once the motor is "up to speed").
When a capacitor is fully discharged (before the motor starts), it "looks like" a short circuit when power is first applied. Additional/larger starting capacitors just make this worse. The MicroAir actually "limits" (slows down by a few hundred microseconds) how fast that capacitor charges up eliminating the current spike.
Apr-18-2023 07:49 AM
3 tons wrote:
... my view is that the Autoformer is no substitute for a Micro-Air, because of it’s slower response time, a characteristic of it’s slower transformer based induction response time versus the MicroAir’s near light-speed response mosfets…
Apr-18-2023 07:37 AM
3 tons wrote:
“Well you look at them with a proper scope you feel the need to change underwear they are that scary”……
Now that some advice that’s well worth following 😉 !!
Apr-18-2023 06:45 AM
Cptnvideo wrote:
It's 11:45 MST, A/C just kicked on. Solar is putting out 86 amps and batteries are putting out 45 amps. So, 131 amps to run A/C, res fridge, TV, misc. In 2 hours time assuming the A/C runs 50% of the time, I would consume 150 ah. But my solar would put out 172 ah during those 2 hours (mid-day).
StirCrazy, I agree with you - I hate to listen to a generator. Could you add more solar for what you would spend on the soft start? For my system, the only difference between running the unit with soft start vs one of the units without is the Dish receiver re-starting.
Apr-17-2023 11:56 AM
Apr-17-2023 10:41 AM
Apr-17-2023 09:35 AM
Apr-17-2023 07:18 AM
StirCrazy wrote:dougrainer wrote:StirCrazy wrote:dougrainer wrote:
15k AC will pull 1600 to 1800 watts. About 14.0 amps. So, base the size of your Genny on that. Doug
Surge start up, about 1900 watts
thanks Doug. is that with the micro air or with out?
That is standard SPEC. No Micro air or a Hard start kit on the AC. Doug
that seams low for a surge, but it does have capacitors so it's feasible... I might have to measure mine and see what it does go to...
Apr-17-2023 07:08 AM
dougrainer wrote:StirCrazy wrote:dougrainer wrote:
15k AC will pull 1600 to 1800 watts. About 14.0 amps. So, base the size of your Genny on that. Doug
Surge start up, about 1900 watts
thanks Doug. is that with the micro air or with out?
That is standard SPEC. No Micro air or a Hard start kit on the AC. Doug
Apr-17-2023 07:06 AM
pianotuna wrote:
Hi,
I don't like my Micro-Air Easy Start.
Apr-16-2023 08:22 PM
Apr-16-2023 07:35 PM
pianotuna wrote:
ktmrfs,
I had better results using an autoformer.