Thank YOU for your curiousity and investing your time to watch the video. Much appreciated.
@juanpagalindoluevanos15595 ай бұрын
130.8 mili-volts is bad???
@chrisretired53792 ай бұрын
Yes. Way shorter bearing and race life.
@markgurney86829 ай бұрын
EMF cores stop common mode current before it's get to your motor. This protects your motor insulation that ground rings or insulated bearing don't offer. 3Phi
@fynnsmt11 ай бұрын
Is CoolBlue effective for all kinds of bearing currents. I thought it only affects circulating bearing currents, because it reduces the common mode current but not the voltage, which is the main reason for EDM-currents. Or am I wrong here?
@TechTrainTracks11 ай бұрын
CoolBLUEs absorb high frequency current to a low level that can be passed by ball bearings without causing destructive electrical discharge machining (EDM). Hence shaft voltage measurement is not a determinant of the effectiveness of CoolBLUE technology. The amount high frequency current can be safely (and easily) measured at the VFD output (or at a pull box). In some instances the current measurement result will indicate that additional cores are required. Proper and best practices used in the motor circuit wiring installation are always required. Response by Jerry Gray - President Sloan Electric - Western Master Distributor of CoolBLUE
@matter9 Жыл бұрын
Pleasantly surprised with a quality and informative video. Thanks! Not sure if anyone’s mentioned it, and I know this is an 8 year old video, but there’s a typo in the title cards at the start of the video.
@TechTrainTracks Жыл бұрын
Good catch. Somehow the title template was inadvertently changed deleting the "s" in always. Thank you for your time watching the training. Appreciated.
@stephentucker2714 Жыл бұрын
Thanks for the video, do the arrows have to be pointing at each other?
@zakeerhussain5817 Жыл бұрын
Hii bro, would like to watch parts and I could not find it in your channel. Iam working in generator compny and my customer wants to install rtd in alternator and it's very expensive, is there any other cheap Devise to measure temperature in alternator winding. Let me know please
@child737 Жыл бұрын
Pls give nu 310 roller dm and leangth
@JavadMousavi432 Жыл бұрын
You are great my firend
@TechTrainTracks Жыл бұрын
We thank you for your positive comment and your time.
@jpartavia4882 Жыл бұрын
Hi Jim ! Thanks for the amazing video !! Can you help me out on something ?? I have a 10 hp a 30 hp and a 60 hp motor. All of these are in a crane. They all work on 240v. I need to calculate the ohms of the resistors to add in order to get a 50% speed. Can you help me on this calculation ??
@TechTrainTracks Жыл бұрын
Probably the best help we can provide are two links : www.postglover.com/wp-content/uploads/downloads/2014/04/MC105-07_Wound_Rotor_Mtr_Res_Te_Sht.pdf i-gard.com/site/assets/files/1120/resistor_control_of_wound_rotor_motors.pdf
@yusufoduwaye5097 Жыл бұрын
Thanks Jim, There is this 4100kW wound rotor that usually have burnt pigtail (middle) on all the 18 carbon brushes of the slip ring after few weeks of operation. We have changed the LRS solution, the carbon brushes and also improve on the compartment cooling. What else can contribute to this?
@TechTrainTracks Жыл бұрын
It appears that one ring is burning. Most likely there is a short in that ring's connected phase. Only the LR is starting. My suspicion would be either the brush rigging has a fault or there is a rotor short. Hope this info is helpful and hope your investigation finds the problem.
@ljkain3091 Жыл бұрын
Gracias
@TechTrainTracks Жыл бұрын
You’re welcome! Thanks for your time.
@tomondulich8113 Жыл бұрын
Thanks Jim this is an old bridge crane controlled by large drum switches. im converting it to a pendant control from the floor instead of cab control. the bridge is a 15hp WRM. if i were to keep the resistors in the rotor circuit, wouldnt that give me good torque and be easier on my vfd? just bouncing some thoughts of you. thanks
@TechTrainTracks Жыл бұрын
The VFD is connected to the stator. You have to use many other parts that breakdown and cause the rotor winding to fail permanently if not maintained. Brushes Sliprings Brush older and springs The VFD wouldn’t see anything . Jim
@tomondulich8113 Жыл бұрын
if you were to replace a drum controller with a pendant control and use pendant to energize a vfd. would setting the resistance of the rotor curcuit at half way would that be a happy medium?
@TechTrainTracks Жыл бұрын
No. Adding resistance to the rotor effects torque. You want to remove all the resistors when using the VFD. The rotor becomes an induction rotor. Changing the frequency will change the torque and the speed. The down side is the original design has a very low starting amperage or code letter. This made it good for lower starting current than the induction motor. Now you can use motor horsepower with the same power supply. - Jim Hudspeth - Technical Trainer
@hicham50762 жыл бұрын
thank you yyyyyyyyyyyyyyyyyyy
@TechTrainTracks Жыл бұрын
Thank you for the investment of your time
@abbasmohammed75532 жыл бұрын
Hi Sir, I need your advice, I replaced DE and NDE bearings for Vertical Motor (WEG) and when I made Solo run test, Abnormal sound happened in the motor By the way I used Springs bad quality for Thrust bearing, and also I don’t have references drawing which is showing the spring compression? Please your advice
@TechTrainTracks2 жыл бұрын
We are having a difficult time trying to fully understand your situation to give you help. It sounds like you have a vertical motor with a spherical roller thrust bearing with Compression Springs? We have a video specific for just such a motor. Setting endplay on a vertical motor with spherical roller thrust bearings is very different from ball angular contract thrust bearings. Also, what id you mean by "...I used Springs bad quality for Thrust bearing"?
@simaptelsima55872 жыл бұрын
Nuw fitig
@hadijavadzadeh5622 жыл бұрын
I have a question. If we use of two insulated bearing of any side of motor(NDE & DE).we can solve this problem?
@hadijavadzadeh5622 жыл бұрын
good.
@geovanebrito45072 жыл бұрын
Very good
@TechTrainTracks2 жыл бұрын
Thanks much Geovane! Your kind words are appreciated.
@audiokees40453 жыл бұрын
Using low pass filters in the output filtering out the HF from the vfd letting through only the low drive freqeunties does that not help? or use of class D three level vfd who has low harmonic distortion and clean sinusoidal signal after the low pass filter set on 100 hz or so.
@TechTrainTracks3 жыл бұрын
If you'd like to see a Sneaky Quote Tricks Part 2, let us know in the Comment section. We have some good ideas for Part 2.
@amirshaikh71552 жыл бұрын
Could like to see part 2, but in reality people do see repairing motor quotes as purchasing apples & organes!!
@TechTrainTracks2 жыл бұрын
@@amirshaikh7155 Thank you Amir for taking the time to watch and comment. This video was a fun one to make and we have a good idea for a Part 2
@uzomaonyejekwe92663 жыл бұрын
Thanks. Very informative. But why does the diode convert AC to DC voltage
@TechTrainTracks3 жыл бұрын
To supply components (such as Exciters and Synchronous Motor Rotors)with needed DC power from an AC source.
@andrewrothe14153 жыл бұрын
Hey looking for more info on accreditation, currently working in the field and need some extra info.
@TechTrainTracks3 жыл бұрын
What specific info on EASA Accreditation are you looking for? We would be happy to send you a link to the process or to the the EASA ANSI standard to which Accredited Service Centers must adhere too.
@LawatheMEid3 жыл бұрын
Thanks
@TechTrainTracks2 жыл бұрын
You are most welcome. Thanks for the time to view.
@robertglassey9523 жыл бұрын
Thanks for your great videos, very interesting. Question from a total novice: will an NUP bearing function the same whichever way it is oriented on the shaft? I ask because my online research has led me to understand “Mounted on the non-flange side of the inner ring, the thrust collar allows the bearing to carry an axial load in both directions.” And further that “The thrust collar extends out of the bearing on one side, so the dimension across the inner ring is slightly greater than that of the outer ring.” This second explication suggests (to me) that it might matter which order the parts go on the shaft. The Toyota factory installed this bearing on the transmission counter gear shaft (using their terminology) side race, bearing outer race and rollers, and then the inner race, which is a press fit. However, the Toyota Repair Manual, in both the disassembly and reassembly have this order reversed. Which kind of suggests that it doesn’t matter. Bottom line, I want to do it right, do whatever will give me the best, longest service. So I ask the experts, if there is a preferred orientation, what is it? Thank you Robert
@TechTrainTracks3 жыл бұрын
The NUP has both outer and inner races the same size including the spacer on the inner race. They are not designed for thrust. The design allows for some containment compared to the NU type with no shoulders on either side. Normally NUP can help so you don’t have to be exact with the dimensions bearing to bearing with bearing caps. There should be a locking method used to stop the axical thrust so NUP doesn’t run hot rubbing the shoulders on either inner or outer races. If I was worried about thrust and was going to have to use the NUP, I would put a snap ring or locking nut in front of the inner ring on the shaft. Most the time the assembly is the problem trying to use these if there is a nut larger then inner race. (response is from Reed's Reno Plant Technical Director)
@Dan-fq4bo3 жыл бұрын
How much time did it take?
@TechTrainTracks3 жыл бұрын
A little confused about your question. Are you asking how long did the dismantle and inspections take? Or are you asking how long the whole job took? Would like to help you with an answer. Bear in mind that the dismantle took some extra time on this particular unit as we filmed it and made commentary to use as a training aid.
@RajeshYadav-be7ds3 жыл бұрын
What is the FLA of this motor.
@TechTrainTracks3 жыл бұрын
Full Load Amps of armature are 1655 amps. Field amps are 25.1 amps.
@markeysonwoodcraftandcarvi92473 жыл бұрын
Think I'll make a bearing tomorrow, thanks!
@TechTrainTracks3 жыл бұрын
Pretty amazing skill set !
@markeysonwoodcraftandcarvi92473 жыл бұрын
@@TechTrainTracksThanks. Yeah, I got the cage rings done, its coming along nice.
@isaacribera49373 жыл бұрын
hi, i'm looking for one of these ?? they're selling this?
@isaacribera49373 жыл бұрын
For Mexico City!!!
@TechTrainTracks3 жыл бұрын
@@isaacribera4937 We are certain this motor for a mine shaft elevator is not for sale unfortunately.
@TechTrainTracks3 жыл бұрын
To download a copy of the EASA/ANSI AR100-2020 Specification: @t
@TechTrainTracks3 жыл бұрын
Download a copy of the EASA/ANSI AR100-2020 Specification: easa.com/DesktopModules/EasyDNNNews/DocumentDownload.ashx?portalid=0&moduleid=2680&articleid=2792&documentid=1100
@TechTrainTracks3 жыл бұрын
To download a copy of the EASA/ANSI AR100-2020 Specification: easa.com/DesktopModules/EasyDNNNews/DocumentDownload.ashx?portalid=0&moduleid=2680&articleid=2792&documentid=1100
@TechTrainTracks3 жыл бұрын
forecyte now has 4G Cell service in addition to 3G for data transmission to The Cloud.