H
holmslaw
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3 PHASE 32AMP
- Thread starter leighv
- Start date
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If a motor is connected in star you can connect the neutral to the star point if you wish, however it is pretty pointless.
If it is delta wound then you can't connect the neutral.
In star, IL = IP, VL=root3 * VP
In delta VL=VP, IL = root3 * IP
Trying to compare a 3 phase supply to a machine which relies upon a rotating magnetic field to function to a single phase supply is pointless as the machine will not operate.
With a purely resistive load it is comparable, however if you want to get a given power output you need to apply the same amount of power be it single phase or 3 phase.
Assuming a star connected load, a machine with 3 heaters will pull 3x the current from the line of a single phase supply (and return it down the neutral) as it would if it was spread across each of the 3 lines of a 3 phase supply.
If it is delta wound then you can't connect the neutral.
In star, IL = IP, VL=root3 * VP
In delta VL=VP, IL = root3 * IP
Trying to compare a 3 phase supply to a machine which relies upon a rotating magnetic field to function to a single phase supply is pointless as the machine will not operate.
With a purely resistive load it is comparable, however if you want to get a given power output you need to apply the same amount of power be it single phase or 3 phase.
Assuming a star connected load, a machine with 3 heaters will pull 3x the current from the line of a single phase supply (and return it down the neutral) as it would if it was spread across each of the 3 lines of a 3 phase supply.
Who said they didn't know what I was talking about ?
Ok on the last point I forgot to mention that I was talking about a connected resistive load over 3 phases - not a balanced 3 phase motor.
Yes and maybe I should have mentioned the Neutral, but hey-ho I assumed BAS would know what I was on about. It's Friday Holmslaw - lets not get into a disagreement.....
I knew what you were talking about....
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H
holmslaw
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So, it's a Bellonia FII 70/60
http://www.beelonia.de/diemittleren.asp
This is the description:
The housing is constructed of double steel sheet and the stable and robust design feature is a security reaches far beyond the standard. This model can, with both wood and gas (8 KW) or electrically (380/400 volt, 5.8 KW operated). Because of the high performance variant of the electric heater is mounted and cabinet equipped with a thermostat of the. When wood or gas Heizschübe variant may be changed in seconds. 4 floors are about 45-60 fish, or about 30-40 kg of meat space.
There is no rating plate. But it shows the manufacturer Moeller C1 K3 125 1S
The electrical unit itself
It was secondhand
I think that was everything... If not - let me know. Thanks.
http://www.beelonia.de/diemittleren.asp
This is the description:
The housing is constructed of double steel sheet and the stable and robust design feature is a security reaches far beyond the standard. This model can, with both wood and gas (8 KW) or electrically (380/400 volt, 5.8 KW operated). Because of the high performance variant of the electric heater is mounted and cabinet equipped with a thermostat of the. When wood or gas Heizschübe variant may be changed in seconds. 4 floors are about 45-60 fish, or about 30-40 kg of meat space.
There is no rating plate. But it shows the manufacturer Moeller C1 K3 125 1S
The electrical unit itself
It was secondhand
I think that was everything... If not - let me know. Thanks.
Are you deliberately trying to start trouble. Please explain what is gibberish about my above statement. If you wish to have a public technical showdown then just say and we can talk technical with all members as onlookers -I don't care. I will admit if I am wrong and I would hope you would too.
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Sorry but it tells us nothing.
As you may have worked out a lot depends on how it is wired. heaters could be wired star each being 230v and if so it can be reconfigured but could also be wired delta each being 400v and it would require quite large step up transformers to run them likely cheaper to renew elements and fit 230v ones instead.
Not sure if any motors but if there is they also could be wired star in which case they could be rewired delta and a cheap inverter £100 or so could work them from single phase supply but if wired delta then the voltage would be wrong and the inverter will cost three times what the other would cost.
As to Moeller C1 K3 125 1S that sounds like the markings on a contractor or switch C1 meaning contact 1 and nothing to do with main unit. Moeller make switchs and relays etc.
Don't know how much it is worth but unless it is very expensive likely best option is to sell it again.
As you may have worked out a lot depends on how it is wired. heaters could be wired star each being 230v and if so it can be reconfigured but could also be wired delta each being 400v and it would require quite large step up transformers to run them likely cheaper to renew elements and fit 230v ones instead.
Not sure if any motors but if there is they also could be wired star in which case they could be rewired delta and a cheap inverter £100 or so could work them from single phase supply but if wired delta then the voltage would be wrong and the inverter will cost three times what the other would cost.
As to Moeller C1 K3 125 1S that sounds like the markings on a contractor or switch C1 meaning contact 1 and nothing to do with main unit. Moeller make switchs and relays etc.
Don't know how much it is worth but unless it is very expensive likely best option is to sell it again.
Yes, he is.
He can't - he doesn't do rational explanations - he thinks that mindless abuse which doesn't even make sense to him enhances his reputation and is good for the forum.
It's good that you don't care, because you won't get it.
He never admits that he's wrong. He just pretends that he no longer understands plain English. Apparently that enhances his reputation and is good for the forum.I will admit if I am wrong and I would hope you would too.
H
holmslaw
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If 'cess' is an electrical term then no I haven't heard of it.
You still haven't answered my question.
You still haven't answered my question.
Hurry up Holmslaw, I'm getting bored.......
H
holmslaw
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Ok - explain the cess to me after you have explained why my post was gibberish (about the 3 phase power being basically 3 lots of single phase power)
I won't stray off the track !
I won't stray off the track !
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