Rumus Ampere 3 Phase

13.09.2019 Posted admin

Rumus Listrik Ampere, KW, KVA,PF, HP. Untuk mengetahui berapa amper yang diperlukan harus diketahui dulu tegangan kerja dan fasa yg akan digunakan pakai 1 phase atau 3 phase? Jika semuanya sudah diketahui maka tinggal hitung menggunakan rumus diatas tersebut. Semoga bisa dipahami. (Rumus Daya Listrik – Daya listrik pada listrik arus bolak balik (AC) terdiri dari 3 jenis daya listrik yaitu Daya Semu, Daya Aktif dan Daya Reaktif. Gods of egypt italiano torrent. Ketiga daya tersebut tentunya mempunyai satuan daya yang berbeda. Untuk daya semu misalkan satuanya adalah VA (Volt Ampere), Daya Aktif dengan satuan Watt, sedangkan daya reaktif satuanya adalah VAR (Volt Ampere Reaktif). 1 Ampere berapa Watt? Pertanyaan konversi dari ampere ke watt yang biasa muncul dari konsumen PLN untuk mengukur dan membandingkan peralatan listrik yang akan dipakai dirumah disesuaikan dengan kemampuan batas KWH terpasang. Informasi ini penting didapat agar lebih mudah memahami dan antisipasi ketika ada update peralatan elektronika dirumah konsumen, apakah harus tambah daya atau melakukan.

Rumus Perhitungan Ampere 3 Phase

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Plastic
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3 phase '100 amps per phase' can someone explane 'phases' to an idiot?
I am trying to move into a small place to do some metalwork. Ideally I'd need 150 amps but 100 amps would be OK. I have a 65 amp machine but trying to get a machine that can go up to 130 amps but I control the amperage besides it will be a while and I need a place to get it up and runing and dialed in. I talked to a broker and they told me a place had 3 phase, 220v, '100 amp per phase), I asked if I run 3 phase that would be 300 amps? He gave a confident 'yep' but I'm not sure it works that way. Is there such a thing? I'm not sure abot this whole 'phase' thing, my impression is that rather than single big waves electricity coming at one time, it's split into 3 smaller waves coming separately.
It's not like I take all 3 phases and add up the voltages and amps do I? then why isn't 3 phase 360v in most places?
Note: I also spelled 'explain' wrong in the title, further solidifying the fact I need this whole 'phase' thing explained to me like I'm an idiot
Diamond
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There are 100 amp on each phase, and 220 volts on each phase. But, that does not get you 300 amps because whatever you hook up draws it's amps on each phase.
Sounds like a 100 amp service.
Stainless
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First tell use what this machine is that needs 65 amps but you can go up to 130.. is it a single phase machine or what? Are you talking input current or output, and output of what?
The max you can draw from a 220v 100 amp supply, three phase or not, is 100 amps. In theory you could have three separate single phase devices each drawing 100 amps at 220v, or one three phase device at 100amps.
220 is an uncommon voltage for supply - more likely it's 240 or 208v?
It get further complicated - Does this new location have a 100amp breaker or is it rated for 100 amp supply? You won't be running 100 amps though a typical 100amp breaker for long.
Titanium
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I'm thinking the OP is talking welders ,a 130 amp welder doesn't need 130 amps going into it because voltage will be much lower ,as said above more information is needed.
Hot Rolled
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Yeah, like sable said. If you're talking about a welder, look on the tag for input voltage requirements. !00 amps per phase is still only 100 amps, it don't add up when using 3 ph. A 130 amp welder won't take close to 100 amps.
Cast Iron
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Well if it is a welder, 65 amp output is unlikely. I suspect he's looking at a very large TIG machine or similar. My 352? ESAB takes 110 amp input 240V single phase for full output current. He seems to know that he needs a lot of power anyways, and it sounds like the broker is snowing him.
Plastic
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I have one plasma cutter that goes up to 65 amps, and another table with a 130 amp plasma cutter I'm trying to get set up and running, but I do not expect to be cutting anything requiring 130 amps any time soon. I will only be cutting 3/16-1/4 at the most which requires 65 amps.
Thanks guys, this confirms what I thought.
Titanium
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I can't tell if you're talking input or output of these machines and that would make a large difference here.
gnorbury
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Check the ratings plate for input amperage and voltage. If it's not listed, look for the equipment wattage and work back from there. Watts/volts = amps (broadly speaking, ignoring power factor etc)
Cast Iron
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I believe Metricar is talking about a 65 amp (output power) plasma cutter and another 130 amp (output) plasma cutter. The output power amperage will be totally different than the input power requirements.
First...the power in your household 120 outlets is single phase, 120 volts (N. America). There are two prongs for the power, and one is a safety ground. It is called a 3 wire single phase. There also are single phase household outlets for things that use more power, such as an electric stove, an electric dryer. These outlets typically will have 4 wires or 4 prongs, measuring across the two main hot wires you will see 220 volts (or 208 or 240), and measuring from each hot to the neutral you will see 120 volts. This is called 'split phase 120/240), the fourth prong is for safety ground. There also are 3 wire 240 volt single phase circuits..these will measure 240 volts across the two hot legs, there is no usable 120 volt path, and the third prong is for safety ground.
In most commercial buildings there is 3 phase power, which is much more efficient for powering industrial equipment. A 3 phase power outlet will have 3 wires for power, and if it is 220 volts you could measure 220 volts between any combination of the 3 wires. 3 Phase in N. America is normally available in 208, 220 or 240 or 480 or 600 volts (Canada). The higher the voltage, the more efficient and powerfull the circuit will be. Higher voltage allows more amperage to travel longer distances through smaller wires sizes.
If your 65 amp unit is a Hypertherm Powermax 65..it is designed to operate on any input voltage between 200 and 600 volts, single or three phase. It cuts the same with any voltage input (some plasma systems put out lower cutting power with lower input voltage), but will use less input amperage and require smaller input circuit and wiring sizes if you operate it at higher input voltage and /or on 3 phase power. Further, on higher voltage inputs and on 3 phase circuits, the duty cycle will be higher as the power supply is more efficient on these circuits.
The Powermax65 will draw as much as about 60 amps on a 240 volt input power line when cutting the thickest materials. If you are running on a 600 volt 3 phase input power line..the 65 will draw about 15 amps per phase. (these numbers are off the top of my head as I do not have the operators manual in front of me)
The HPR130 or the HSD130 from Hypertherm will only operate on 3 phase voltages as it is strictly an industrial machine, and draws too much power to efficiently operate on a single phase circuit. These units must be purchased for the voltage level you have, so if your shop has 240 volt three phase, the unit must be built for that voltage.
Hopefully this helps a bit.
Best regards, Jim Colt Hypertherm
Originally Posted by metriccar
I have one plasma cutter that goes up to 65 amps, and another table with a 130 amp plasma cutter I'm trying to get set up and running, but I do not expect to be cutting anything requiring 130 amps any time soon. I will only be cutting 3/16-1/4 at the most which requires 65 amps.
Thanks guys, this confirms what I thought.
digger doug, JRIowa, Rob F., 9100, dsergison and 1 others liked this post
Diamond
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Yup, what Jim said..AND to add, I just wired up a T.D. (not my choice) a-120 plasma
supply for a cutting table, input at 220 vac 3-phase was 62 amps.
Titanium
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If it is 3-phase 20 amps, each phase has 20 A. Just look at the fuses.
Even if you draw 10 A from every phase -with a single phase equipment-, the neutral will only see 10 A.
If you pull 10 A at each phase with a 3 phase motor, the neutral sees no current. At 230 V, it will be 6.9 kW
Unless you have some fancy 3 phase, where the phases are not at 120 degree.
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Originally Posted by Nick Mueller
If it is 3-phase 20 amps, each phase has 20 A. Just look at the fuses.
Even if you draw 10 A from every phase -with a single phase equipment-, the neutral will only see 10 A.
If you pull 10 A at each phase with a 3 phase motor, the neutral sees no current. At 230 V, it will be 6.9 kW
Unless you have some fancy 3 phase, where the phases are not at 120 degree.
Nick
Are you sure about that??
reason I ask is that I used to install machine tools and durring the run off testing we made a full HP cut and used the Amprobe meters to check the current in each of the 3 wires going to the motor..ALL 3 were the same current..
Where would the Neutral wire be?
Titanium
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You don't need to draw the same current from all phases. My heat-treating oven draws a funny mix from 0 to 20 A per phase. A 3 phase motor does draw the same current on all phases (minus some differences).
Depending on your load, you don't need a neutral or not. My funny oven does, a 3 phase motor not. Neither in wye nor delta.
It simply depends on the kind of load.
Nick
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Originally Posted by Nick Mueller
You don't need to draw the same current from all phases. My heat-treating oven draws a funny mix from 0 to 20 A per phase. A 3 phase motor does draw the same current on all phases (minus some differences).
Depending on your load, you don't need a neutral or not. My funny oven does, a 3 phase motor not. Neither in wye nor delta.
It simply depends on the kind of load.
Nick
Is the odd mix of currents due to switching different combinations of heaters to control the amount of heat? I had an oven like that once that controlled wattage by switching different series combinations of lower voltage elements between delta and Y. I was trying to get a 3 phase line at the time and running into objections from the power company because I did not have enough load to meet their requirements. I simply could not make them believe that I had a 3 phase oven and I did not have enough machines to make the load requirement because running on a phase converter was strangling me. They did finally give me a line.
Minor quibble- Jimcolt obviously knows what he is talking about, but I have always heard the term 'split phase' applied to capacitor start motors with a centrifugal switch. Jim's post is the second time recently I have seen it used about a 120-0-120 line. Has terminology morphed?
Bill
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Is the odd mix of currents due to switching different combinations of heaters to control the amount of heat?
It has tree stages. And depending on which one you use, more elements are added. At the lowest stage, there is just one element (at the bottom), next stage is bottom + 2 on the side and third stage is an extra one on the top. Bottom, side and top have different wattages.
And there is an extra element that heats the temperature sensor. Astonishing enough, that takes out thermal inertia of it. Compared to an other thermometer in the middle of the oven, they both are off maybe 10 °C, even during heating up.
So:
At least here, no one forces you to use the same load on all three phases (at least, I don't know). The lighting in my shop actually is connected to three phases (each group its own). So if one phase fails, I'm not standing in the dark (with a machine still running).
I know, the US electricity is a bit odd compared to ours, so things might be different.
Nick
Stainless
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Originally Posted by 9100
Minor quibble- Jimcolt obviously knows what he is talking about, but I have always heard the term 'split phase' applied to capacitor start motors with a centrifugal switch. Jim's post is the second time recently I have seen it used about a 120-0-120 line. Has terminology morphed?
Bill
Nope.. That's how I've always heard it. It is technically correct- not '2 phase' as some like to think of it. Maybe the internet just make the terminology more universal and accessible?
Stainless
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Originally Posted by Gary E
Are you sure about that??
reason I ask is that I used to install machine tools and durring the run off testing we made a full HP cut and used the Amprobe meters to check the current in each of the 3 wires going to the motor..ALL 3 were the same current..
Motors draw the same current per phase by design. Other items do not have to. A standard 3 phase panel distributes load per phase, and they are most certainly not equal in a mixed use environment.
Diamond
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Originally Posted by Nick Mueller
Astonishing enough, that takes out thermal inertia of it. Compared to an other thermometer in the middle of the oven, they both are off maybe 10 °C, even during heating up.Nick
That is known as an anticipation heater. Because of the lag in heat from the heaters getting to the sensor, it will keep the heat on too long, then after it shuts off the overall temperature will overshoot. When I built gyros, that was a serious problem. Integrating gyros were sealed in a can surrounded by another with the gap filled with a damping fluid that was a paste at room temperature. Operating temperature was 160 F. A large overshoot would boil the damping fluid and blow the end off. The solution was to use a resistance wire sensor with a few turns of heater wire wrapped over it with only a thin layer of insulation between them. The anticipation winding would cause the temperature control to shut off early, the internal mass would absorb heat, the control would turn back on and shut off early again, repeating the cycle as the temperature staircased up, finally stabilizing on the right temperature. The temperature controls were primitive, tube amplifiers sensing the output of a resistance bridge. Modern computerized controls have compensation built in, allowing the user to tailor the response to the individual system. In some ways I don't miss the 'good old days'.
Bill
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Originally Posted by Gary E
ALL 3 were the same current..Where would the Neutral wire be?
Sounds like you had delta power with no neutral, which is an extremely common configuration.

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3 phase '100 amps per phase' can someone explane 'phases' to an idiot?

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