Hello Mr majeda. I am Iranian I like your work .in DC and AC motor .when I am winding servo motor c n c And Dc.Ac. You are good ...good winding .... And nice your work. Thank you for beautifully works
I was able to follow what you were doing. Thanks for the explanations. I used to install telephone central office equipment and we had to know the color coded cables and how to run, secure and connect them. There's a process to it. Well done.
The stator of the motor may be cleaned with WD40 ,and then varshished before winding .The winding should be done after drying of varnish of the stator as the magnetic properties are affected due to overheating .
Готовое устройство, после сборки очень похоже на преобразователь для дуговой сварки, сами обмотки 2 пары полюсов по 3 секции, и того 6 секций. Соответственно 1500 оборотов, но я не понял почему с завода катушки соединены в треугольник. В остальном - я впечатлён, удивлён, и с удовольствием все просмотрел. Отличный скилл, великолепно выполнена работа. Отдельного внимания и похвалы служит решение по проверке количества витков в катушке. Весы это великолепная идея. Здоровья, Добра, Удачи из Белоруссии! С уважением!
@@Alex-Che_ это не нитролак, это бакелитовый лак печной сушки он идёт спецом для пропитки арматуры, очень глубоко впитывается, и когда высыхает - усиливает электрическую прочность системы на пробой. А по виду - да)) на масло похоже.
This winding procedure of this particular motor is an excellent manner how to teach about three-phase motors. The three coils (single coils at 120 degrees) which are shown at 34: 45 is a case where the electrical angle is equal to the mechanical angle and so the highest speed is available with the number of poles shown to get the rotating field sequence. Distributed coils are used to get the distributed magnetic field along the pole and this could have been obtained with concentric windings for each pole. That is the logic of the three coils for the three phases in their basic form. The other set of three coils shown at 39:48 do in fact create the logic required for a six-phase winding, but for convenience of a better three-phase motor, the three latter coils are placed and excited at 180 degrees ( electrically and mechanically in this case) with respect to the first set. This technique makes it easier to excite the long magnetic path to obtain a constant magnitude rotating magnetic field. The motor coils could have been wound as one wind an armature, where one side of all six coils is low in the slot and the other is high in the slot, but for teaching purposes, this system of differentiation optically and visually, the two sets of three coils is much better. It is important to mark the start and finish ends of each coil and to have an iron rod and a magnetic compass and a low DC supply to ensure that all six coils have the right polarity for a smooth rotating field. Unlike a stepper or a brushless DC motor such as winding which are excited with a sinewave and have a sinewave distribution of magnetic field across the poles is the reason for a smooth constant magnitude rotating field For military naval work (British Navy) we used to put the stator in a vacuum chamber and heat it to ensure all moisture is evaporated and then a valve was opened and the shellac would be sucked in by the vacuum and the winding is totally impregnated and so in addition to the tie-up shown the winding wold not move or vibrate with respect to one another as Naval ships need to fire their guns and one does not want the winding vibrating and being scratched to wear the enamel insulation. That was over 80 years ago and I must say that seeing these videos bring back pleasant memories of my apprenticeship and working on all sort of windings and running the testing section. Once I had an extra-large three-phase induction motor where my supply could not handle the heavy starting current and so what I did was to tie a rope around the coupling and asked ten people to give it a pull and as the motor had an initial rotating, the starting current was kept within what my supply could handle. Looking at 1:05:59 seeing that squirrel cage rotor, once I had a squirrel cage rotor with a tapered rotor which was used on a large plastic injection machine where the rotor in addition to rotation is slid axially to lift off the brake. The sliding action inertia broke aluminum bars making up the squirrel cage, I replaced the aluminum bars in the rotor with steel welding rods which gave a higher starting torque to the motor but not a good high-speed performance which I did not need anyway in a plastic injection machine. Thank you for the memories of my youth. Congratulation on your winding procedure and the skill is shown in this video.
Thanks for letting me know how to calculate the size of the coil to be replaced. The easiest way: its weight not length obviously knowing the uninsulated copper section of a piece of the old winding. Simple and effective! What I couldn't figure out was how to derive the diameter of the coil to be replaced without being able to use the old one, which is cut. I would be grateful if someone could explain this to me.
Wire original Size - SW 18.5 two wire, This type wire not available my country But now i used one wire SW 18 and one wire SW 19 than all is well, and Thank you so much for your comment sir 👍❤️💞🇧🇩🙋
Nicola Prisco. The current taken by an electrical machine normally depends on the back emf generated within the machine and this applies to motors, generators, and transformers. A long time ago when the magnetic path could take ).5 Tesla I used to wind transformers operating at 50 Hertz on a particular voltage, using 7 or 8 or 9 turns per square inch of steel per volt. 9 turns per square inch per volt, were used in transformers which were to operate continuously on maximum ratings, The current taken depends on the power used and basically, it is Power = operating voltage multiplied by operating current. The same philosophy can be applied to winding motors and generators and with a little experience, a rule of thumb can be found for transformers. So note, the larger the area of the iron path enclosed by a single coil the smaller the number of turns, and the larger the voltage needed, the larger the number of turns. For current and area of conductor needed one needs to know the load to be taken from the machine. Note that in a rotating machine those multi-coil windings are added vectorially so a little bit of experience should allow for that. All the best in you winding experience.
guys! can you show us next video how the motor rewinding works, like how you connect the starting winding and the running winding so that like me can learn so much. hope you notice my comment. thanks you guys!
@@majedaelectricworkshop thanks for the reply, ah ok sir 3 phase is all running windings, there is no stating. now i know sir. very much appreciated. God bless
Si emos visto que 1 cv ara y trabaja el campo como un moticultor de 10 km ncluso más rápido ! uno de 20 es para estirar la arada en un tractor mínimo de 100 cv
what was the cause of failure? over heat and short circuit in winding? what was the reason of short circuit in wining? Bearings were fine, lamination failure?
comparing the original 1:12 with the new winding 1:04:22 ...the new has much more white cloth binding the wire , this must act as an insulation blanket stopping the heat escaping , higher wire temp. shorter life.
Sir, what is the number of SWG of your solder wire and what is the weight of the spool of your solder wire(500 Gram or 1KG or 5 KG)? If possible kindly share the manufacturing name of your soldering iron and soldering wire.
