It would helpful if you would include languae(Arabic) in the title. Since title is in English it is not apparent that the video will be in Arabic. And some of us dont speak Arabic. :)
@mahmoudyousuf9307
4 жыл бұрын
ربنا يبارك فيك ويجزيك خيرا عن هذا العلم
@faresal-saket8968
2 жыл бұрын
وين ممكن اجد محاضرة اللي بتشرح فيها ال loads type لو سمحت دكتورنا مشكور سلف.
@user-gg2po2er1e
Жыл бұрын
دكتور هل ممكن احصل علي هذه الشروحات مكتوبة لو في اي مصدر
@eliasibrahim6405
6 жыл бұрын
i need videos for how to design an induction motor
@LutfiAlSharif
6 жыл бұрын
I am sorry. I do not have any experience in this area.
@bobk.amissi4401
5 жыл бұрын
Thank you for the video. Is it possible to have the explanations in English as well, since I guess you seemed to give useful information, speaking in the other language? :)
@LutfiAlSharif
5 жыл бұрын
I will try in the future.
@nsnnsn5445
3 жыл бұрын
Sir can i get English translation please
@moustafazahra1094
3 жыл бұрын
Hello I would really appreciate it if you could help me resolve this issue. I have a 1000 rpm 160 kw rated 3 phase Delta connected ac motor hooked to an air compressor feeding an oxygen production plant. our phase to phase supply voltage is 380 volts. our maximum running load current at working pressure is 250 Amps. This motor failed as it was running for more than 10 years. Lately we demanded more continuous load due to high demand for medical oxygen effected by covid19 pandemic. I could not find a similar replacement available. However i found another German made motor with same mounting frame and shaft size and also 1000rpm at 50 Hz the name plate says: Delta connection 660 Volts - 260 Amps - 240 KW. my question is : if i supplied this motor 380V with same delta connection will it be able to give me 160 kw power? because its limiting design current is 260 Amps as it says . Thus if am assuming its rated power will be reduced proportionally to the reduction of supply voltage. i it is rated 240 Kw at 660 Volts is it true that it will become a 160 Kw motor under 380 Volts? I am also assuming it will not overheat as the current will not exceed its rated 260 A at my demanded compressor load. Please help me if you have a definitive answer without any speculations. Best regards
@LutfiAlSharif
3 жыл бұрын
i do not think this will work. The reduction in voltage will reduce the torque by the SQUARE in the reduction in voltage. Assuming that the speed will remain the same (same number of poles and same frequency of the supply), then the power (which is the product of the new torque and the current speed) will also drop by the SQUARE of the ratio of the new voltage to the rated voltage. This reduction in power is (380/660)^2 which is around 33%. So the actual power from the new motor running at 380 V will be around 80 kW only. the current will also be lower than the rated value by the ratio of 380/660. Basically using a lower voltage than the rated voltage of the motor will reduce BOTH the current and the voltage.
@LutfiAlSharif
3 жыл бұрын
your best option is to find a three phase transformer to raise the supply voltage from 380 V to 660 V.
@moustafazahra1094
3 жыл бұрын
@@LutfiAlSharif Thank you very much for your feedback and enlightening explanation. You definitely are a master in this field. My respect to you sir.تحياتي واحترامي لك من لبنان
@LutfiAlSharif
3 жыл бұрын
@@moustafazahra1094 Thank you. you are welcome.
@londonnight937
4 жыл бұрын
Roses are red, Violets are blue, The title is in English, So why aren't you?
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