430.250--115v 3phase motor voltage rating?

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ohmhead said:
Well we dont have a picture yet of motor but just so one can see how about some concrete proof that they really make these 100volt ac http://www.hightechscience.org/sparrow.htm 100 volts ac 3 phase motors asynchronous , not you common motor read the specifications of car !! best to yas
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Although it is interesting...........

That example is not covered within the scope of the NEC......90.2(B) I am specifically looking for the appropriate motor that would fall under the first column in 430.250.
 
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ibew441dc said:
Although it is interesting...........

That example is not covered within the scope of the NEC......90.2(B) I am specifically looking for the appropriate motor that would fall under the first column in 430.250.
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Well if you need proof that its also used per the nec!
Then read US Patent 5293108 it shows a static phase converter used to feed or supply AC 3 PHASE POWER to a 3 phase 120 volt motor in a appliance . Is that good enough per the NEC most of these motors are as i said rare motors they are here but electricians will not see these in the trade . Just in some extreme projects not you normal construction job sites . There in machines or specialty equipment but they are code related motors ul listed . comments best to ya , by the way did you at least see the picture of one in that car specs ?
 
I see that you are looking for the motor itself.

Seems to be a lot of 400 Hz stuff around for 3 phase, with mostly 200+ volts but some have 115 volt.

Here is one supplier of 115 volt 3-phase motors, 60 Hz and 400 Hz:
http://www.globe-motors.com/fc_mil.pdf

Not a nameplate exactly, but I hope that is close to what you are looking for.
 
Good Stuff!!!!

Good Stuff!!!!

mivey said:
I see that you are looking for the motor itself.

Seems to be a lot of 400 Hz stuff around for 3 phase, with mostly 200+ volts but some have 115 volt.

Here is one supplier of 115 volt 3-phase motors, 60 Hz and 400 Hz:
http://www.globe-motors.com/fc_mil.pdf

Not a nameplate exactly, but I hope that is close to what you are looking for.
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Thats It!!!!!!!!!!!!!!:D:D Thanks Mivey!!!!!!
 
ohmhead said:
Well if you need proof that its also used per the nec!
Then read US Patent 5293108 it shows a static phase converter used to feed or supply AC 3 PHASE POWER to a 3 phase 120 volt motor in a appliance . Is that good enough per the NEC most of these motors are as i said rare motors they are here but electricians will not see these in the trade . Just in some extreme projects not you normal construction job sites . There in machines or specialty equipment but they are code related motors ul listed . comments best to ya , by the way did you at least see the picture of one in that car specs ?
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Mivey found what I was looking for.

Ohmhead, is the motors info that Mivey provided what you were referring to as a Steromotor? If it's not then I want to see it too. I am not questioning the fact that it exists at all, I've found some info on it , but can't find a good cut sheet or picture. At first look I did'nt look at the car specs for a picture, I'll take a closer look.:smile:
 
2 horsepower 3 phase 115 volt

2 horsepower 3 phase 115 volt

Mivey,

Do you know of any similar data on a 115 volt 3 phase 2 horse power motor?

(It's the largest listed in the first column of 430.250)
 
ibew441dc said:
Mivey found what I was looking for.

Ohmhead, is the motors info that Mivey provided what you were referring to as a Steromotor? If it's not then I want to see it too. I am not questioning the fact that it exists at all, I've found some info on it , but can't find a good cut sheet or picture. At first look I did'nt look at the car specs for a picture, I'll take a closer look.:smile:
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Well no actually the Steromotor is more closer in relation to the NEC code 430.250 than what Mivey has shown look at the data highest wattage ratings on Miveys motors are 35 watts these are fractional HP motors used in aircaraft or applications like a timing & clock or small drive applications not in power or industrial & com/field power electric meaning the NEC code book related field.
400 cycle motors are mostly used in aircraft as most generators in aircraft are 400 cycle and motor applications .

A Steromotor is a working group of motor its used in a motorized valve application meaning flow of water or hydro turbine steam or a low speed high torque application on machines it has actual HP not just fractional hp its used in the field of our trade for heavy working loads , were not able to find a picture of a actual nameplate or a motor by example to show you . But will keep trying so you can see what iam talking about.



If i could go back in time i could get you a picture but my navy days were many moons ago ,ill look today to see if i can find you something more concrete .Take care be safe
 
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Lets find a STEROMOTOR......

Lets find a STEROMOTOR......

ohmhead said:
Well no actually the Steromotor is more closer in relation to the NEC code 430.250 .........



If i could go back in time i could get you a picture but my navy days were many moons ago ,ill look today to see if i can find you something more concrete .Take care be safe
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Don't you have a H.D. around? They usually don't have what you need in stock to get your electrical installation done........but they do sell a Time Machine.

:grin:
 
ibew441dc said:
Mivey,

Do you know of any similar data on a 115 volt 3 phase 2 horse power motor?

(It's the largest listed in the first column of 430.250)
Click to expand...
No, but I'm sure the military and aircraft don't stop at fractional HP motors.

Maybe we can get some of our military or NASA members to step in.

Also, the military 115, 400 Hz spec is a 115/200 wye. I'm not real sure if that is what some of those motors I saw are actually supposed to be hooked up to or not.

I think table 430.250 pre-dates the steromotor so we still have a mystery on our hands.
 
From MIL-STD-704F (Aircraft Electric Power Characteristics):

5.2.1 Type system. AC systems shall provide electrical power using single-phase or three-phase wire-connected grounded neutral systems. The voltage waveform shall be a sine wave with a nominal voltage of 115/200 volts and a nominal frequency of 400 Hz. Variable frequency and double-voltage systems may be used as alternative electrical power systems. Variable frequency systems have frequencies varying from 360 to 800 Hz with a nominal voltage of 115/200 volts. Double-voltage systems have nominal voltages of 230/400 volts and a nominal frequency of 400 Hz. A third alternative for secondary electric power systems is single-phase 60 Hz systems. These systems have a nominal voltage of 115 volts with a nominal frequency of 60 Hz and are used in support of COTS equipment only.
 
Well when i was a EM3 in the US Navy all aircraft was 400 cycle each had a 400hz generator our support power was 400 hz and also 800hz if needed as some aircraft had 800 hz .

It was for weight to size wire smaller and radar dop or avionics & electronics i believe that dc rectification was important and better at high freq than lower . i think its still that way today ?

cant find a steromotor nameplate or picture but they did exsit and had a purpose in our electrical world sorry i brought it up i knew i should not have mentioned it .Its kinda like using the word IBM today ya know they used 400 cycle for there stuff back when computers were news . take care be safe oh and 400 cycle has a bite you will never forget .
 
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