This link is good but i am still confused! http://www.allaboutcircuits.com/vol_2/chpt_11/4.html
Hi all,
My Goal: To run a common house freezer through a smaller dedicated 12/240v inverter from 12v battery bank. Freezer already runs well through a large inverter but i want to improve the so called power factor for efficiency and also so i can buy a smaller inverter to start it. I hoped to use a 300-350watt inverter but 600watt if I have to my larger inverter is 2500watt and 5000 surge pure sine wave. I do not know a lot about this stuff but im learning. Electricity is precious in an RV to live off so the best efficiency is better.
I have spent weeks on this now more confused then ever. Finding a calculator I can simple input some variables is near impossible, I find the math to hard.
All I have to go on is the plate on the freezer motor says 0.86amps 220-240volt 50htz, 104watts and 1/6th horsepower rated motor. Its a little strange though because another plate on the freezer itself says rated 90watts 1.2amps 220-240v 50htz. It does not have any capacitors on it so I wish to customise at least a star cap and maybe a run cap.
Before anyone says just get a 3 en 1 start capacitor kit I wish I could import one to Australia (its not allowed) but I cant find anywhere I can buy one here so far. It would be so much easier. I can buy a cap on its own here though (it doesn't have a bleed resistor across it or a relay)!
To do this it may need a potential relay so any info about that be good. To answer the question I want at least a start cap size in uF. 10uF, 17uF, 40uF?????? I do not know? And what size run cap?? Any info about wiring it in in simple laymans terms please would be good. Any thoughts about achieving this.
This is a good article PDF about someone that done this, about the only one I can find anywhere:
http://jubilee101.com/subscription/pdf/Appliances/Converting-a-Freezer-to-Start-Up-On-an-Inverter---4pages.pdf
Thank you for your help in advance.
P.S. I am told this will make no difference in efficiency so any discussion about it to shed light might be interesting. I'm cautious to try it for the well on it anyway.
Hi all,
My Goal: To run a common house freezer through a smaller dedicated 12/240v inverter from 12v battery bank. Freezer already runs well through a large inverter but i want to improve the so called power factor for efficiency and also so i can buy a smaller inverter to start it. I hoped to use a 300-350watt inverter but 600watt if I have to my larger inverter is 2500watt and 5000 surge pure sine wave. I do not know a lot about this stuff but im learning. Electricity is precious in an RV to live off so the best efficiency is better.
I have spent weeks on this now more confused then ever. Finding a calculator I can simple input some variables is near impossible, I find the math to hard.
All I have to go on is the plate on the freezer motor says 0.86amps 220-240volt 50htz, 104watts and 1/6th horsepower rated motor. Its a little strange though because another plate on the freezer itself says rated 90watts 1.2amps 220-240v 50htz. It does not have any capacitors on it so I wish to customise at least a star cap and maybe a run cap.
Before anyone says just get a 3 en 1 start capacitor kit I wish I could import one to Australia (its not allowed) but I cant find anywhere I can buy one here so far. It would be so much easier. I can buy a cap on its own here though (it doesn't have a bleed resistor across it or a relay)!
To do this it may need a potential relay so any info about that be good. To answer the question I want at least a start cap size in uF. 10uF, 17uF, 40uF?????? I do not know? And what size run cap?? Any info about wiring it in in simple laymans terms please would be good. Any thoughts about achieving this.
This is a good article PDF about someone that done this, about the only one I can find anywhere:
http://jubilee101.com/subscription/pdf/Appliances/Converting-a-Freezer-to-Start-Up-On-an-Inverter---4pages.pdf
Thank you for your help in advance.
P.S. I am told this will make no difference in efficiency so any discussion about it to shed light might be interesting. I'm cautious to try it for the well on it anyway.
