You can easily remove old colour form motor with sandblasting. The single phase motor are those motor which is working one phase and neutral (ground) supply for doing his duty and a 3 phase motor required 3 phase power source. To get right filing factor you need to have surface of your slot. I chose type of winding based on my motors specifications. so the friend keeps watch and enjoy it.. 2.1 Motor Ohm Values Chart; 3 3 Phase Motor Winding; 4 3 Phase Motor … If you have other shape of slot you look at upper picture. For this job use hammer and chisels. Dear soon i will make a diagram of motor connection with contactor, overload relay and with green and red lights. But yes there are companies out there that specialise in motor testing and rewinding. Hi in step 18 you calculate the number of poles with the formula p = (60 x f)/ ns, you get 1 as the answer yet you state that you had two pole pairs? Measure resistance for each winding, resistance between two different winding and resistance between winding and motors frame. 6 months ago. Do you have a diagram for a single phase motor magnetic contactor with overload relay with no nc switch and red and green pilot light? 8 months ago Attach cover on stator. Watch marks to put it into right place. Mark spots between first cover and stator and second cower and stator (we will need this marked points at motors assemble). If you burned old lacquer you should be able to push remain winding out of stators gaps. However, some fantastic learning to be gained from this. I remade winding diagram from book, so it fits into my stator. If you have any questions please ask, and i will try to answer ass soon as possible. Thanks for the time commitment and also for a great intructable! Then i decide to make bigger one but i found problem again. After you wind coil you need to tie it up with piece of wire. For DC motors, changing direction simply involves reversing the armature leads. Remove clamp, and safety ring if you have one. Plot size 6359 sqmtrs, Built up Area :Acc 16200 and RCC 10000 sq ft. ... sectional warping machine 5400 mm width and rewinding creel 480 spindles is available for sale. Put rotor in stator, and close it with second cover. I had a lot of problems with winding new winding too. 5 months ago, Question Place model in special tool. Sandblasting is process where sand hits surface of workpiece with very high speed and slightly damage it. Second picture is showing the magnetic field generated by stators winding. ... LDC Series Lenier Service Motor Magnetic Plate (3 … We tested next things: It took me about a week to rewind this motor. You must be careful because you can easily damage the axis of rotor. Then you can take it of winding tool. It should fit perfectly so you cant pull it out. In second line is measurement at 380V and third line at 400V. Typically we will only rewind over 10hp. Attach new bearings. You can get rotation speed of magnetic field by rounding motors speed (2810) to closest value (3000, 1500, 1000, 750...). 9 months ago I hope you enjoined my presentation of rewinding a three phase motor. First you need to cut old winding from stator. Put ventilator and last cover on motor. You can gently hit rotors axis with rubber hammer. I was curious about what the economics were for rebuilding such motors... Could somebody make a living rebuilding these? I couldn't access to them because other winding were too small. Answer Lubricate axis of rotor. One pole surface is exactly half surface of stator, that is because i have 2 pole motor. You show two sets of two windings per phase. Hello everyone, i am Niko and, in this instructables i will show you, how to rewind and renew old three phase electric motor. Dear soon I will publish a post about submersible pump starter.... Dear soon i will publish a post about the connection of starting and running capacitor. That's why we call them Three phase ASYNCHRONOUS electric motor. plz explain , how to connect contactor to ODU (AC instalation). Because cage is short-circuited, voltage generates flow of electric current. on Step 3, Could you please help me know meaning of those letters when connection is done, Question It seems like it wouldn't be worth it but I guess it must be at least marginally cheaper than building from scratch. Question We will do bearings and seals on any size motor but when rewinding is upwards of 70%+ of new when rewinding below 10hp, it just doesn’t make sense. Question Put motor in hot oven, and cook it for about 4 hours. Hi in this case did you use the contactor as a starter or to break the circuit? It has 6 pole. https://www.youtube.com/results?search_query=indians+rewind+motors, https://www.youtube.com/watch?v=bsS_7EEYx1Y. Take motor out and clean edge (so cover will fit perfectly). If would had 4 pole motor we would have 4 areas instead of 2 areas of magnetic field. If you cant separate cover and stator you can use rubber hammer. However we use mostly in our homes and for small work the one phase motor, in this post you will learn about the, Single Phase Motor Wiring With Contactor Diagram. These seem to be in series but it is not addressed in the text. I took winding on the picture from winding book. Then remove second cover. All parameters are very close together. I see some light colored lines on the winding diagram - are those connection points? Two main parts of motor are rotor and stator. Pole step is distance on inner circle of stator, and it marks size of each pole. Put isolate paper on table, and place ruler on it, so you get about 4mm gap in witch you will insert isolate paper and then twist it. If you are searching for rewinding of one phase motor you can find it here. Resistance between two winding and winding - frame should be more than 1,5 Mohm. I had metal ventilator so i heated it up. There is a table in upper picture. Company owned Industrial Land and Building available for sale at 4th Phase Peenya, Bangalore. Filling factor must be between upper and bottom recommended line. on Introduction, Tanks alot sir giving briefly explanation . In step 40 - I believe your indication of the magnetic poles is reversed - the North should be to the top for current flow as shown (into the page on the right).Can you elaborate on the connections of the windings? Select appropriate value of induction in air gap from table. Working as an industrial electrician this is counter productive vs purchasing a new one. 1 Motor Ohm Values Chart. pressure washing duluth ga. 1. This can take a long time to do. Remove ventilator from rotors axis. Solder and isolate them. You must not leave too much space, because winding would be too bit, and you must not make it too small, because you will not be able access to all slots. Make model of coil. If you have any questions you can easily message me. Current which is flows inside picture has clockwise direction of magnetic field. Each one is drown for different amount of pole pairs. Usually they are attached on stator by long screws. Make sure you wind correct number of turns. Screw motor together. Use puller to remove bearings on both sides. Go back to Contents Table ↑ 6. I see several videos of people in India doing it, so I guess at least there it's a business. Share it with us! Submerged Motor. If we compare all data we can see that motor isn't bad at all. Rotation magnetic field "cut" squirrel-cage, where it induces voltage. Be gently so you don't damage wires lacquer. Find here online price details of companies selling Printing Machine. i.e. If that wont works, heat it. I calculated that my motor has 2 pole pairs and it generates magnetic field as you can see on upper picture. Because magnetic field must rotate faster than rotor to induce voltage in rotor. Connect end of coils to clips, according to picture from analyse motor. Did you recieve pdf for single phase sir? End of each coil wire to conduit box and extra isolate them. I separated it very easily from axis. I draw new winding diagram which i had used at winding motor. You can se that on measurment of resistance where, winding resistances aren't identical. 6. from where this 1.57 comes? Did you compare your calculated number of turns per slot (62) to the number removed from the old winding? But in next measurement we can see that resistances do not dramatically affect on electric motors performance. Reply We may Also derive 3 Phase 3 Wire System from Star Connection: Three phase three wire system is derived from Delta Connections (3-Phase, 3 Wires System). Tight winding well. i had rewinding 3 phase motor 45kw,FLA 80A.After installation and test run about 12 hours the motor trip again .aftet check was found the motor winding already burnt.fyi overload setting is 95A.is it any possibility of this problem.. The motor range is available from 10 HP to 500 HP at 2, 4, 6, 8 Poles. EASA, working alongside members of AEMT, have published the second in a series of studies that examine the effect rewinding has on an electric motor's efficiency.This study, which focuses on Premium Efficiency/IE3 motors, supports similar results found in the 2003 study: Motors can be repaired without reducing … Because gap between stator and cover was very small, i decided to do a little bit bigger first coils, and a little bit smaller last coils. 8 months ago. Rewinding is very long process. Because iron core of stator is not made out of pure iron we need to calculate real package length. Can you explain the connection of the 4 windings per phase? Wire coils together according to winding diagram. IE2 motor can be claimed as IE3 motor by running the motor with variable frequency drives. Sew stator lancing thread around coils, as you can see on pictures. I picked 0,8mm wire. Gently hit cover and try to rotate it. O and X are showing direction of electric current. This comment has been removed by the author. I feel you made few salubrious points in Attributes moreover. We mounted motor on special test device, and connected it with measurement equipment. If you have iron ventilator heat it. Bind the coils with the stator lacing thread. I took all electrical equations and orientation tables from book: Neven Srb ELEKTROMOTORI. I plan on having our apprentice look through this and also work through the calculations. In next steps I will show you how to analyse motors winding, disassemble motor, remove bearings, calculate new winding, rewind motor, reassemble it with new bearings and test motor. 2. It depends on number of pole pairs. A platform to learn electrical wiring, single phase, 3 phase wiring, controlling, HVAC, electrical installation, electrical diagrams, How is the connection made if their is starting and running capacitor available.in single phase submersible pump starter. This time winding was too big and i couldn't close the cover of motor. Reply Distribution Board Wiring Diagram For Single Phase Wiring, How to Control a Lamp / Light Bulb from Two places Using Two Way switches For Staircase Lighting Circuit, Contactor Wiring Diagram For 3 Phase Motor with Overload relay, Forward Reverse Motor Control Diagram For 3 Phase Motor. https://www.youtube.com/results?search_query=indians+rewind+motors The first I saw was this https://www.youtube.com/watch?v=bsS_7EEYx1Y. The colour must withstand at least 100 degrees Celsius. For an AC three-phase motor, you need to swap any two of the power leads (usually 1 and 3 are chosen), while for a single-phase motor you will need to refer to the manufacturer instructions or seek the assistance of a certified electric motor … Contents. I copied this picture from book [Neven Srb; Elektromotori]. It depends on type of isolation. In next step you will need to heat up old coils, and conduit box must be empty. In this insctructables, i am going to make step forward. 9 months ago. Rotate coils so their end wires will come out on the side, where is the hole from stator to electrical clips. can you send it to me the the circuit diagram of magnetic contactor alonebecause I am confuse that where is it NC and NO is placed Because I am not Familliar on that contactor's brand, Sir i need ro float switch with conductor circuit, I am always searching online for storys that can accommodate me. 5 months ago Are these series, parallel, or parallel-series connected? Question However we use mostly in our homes and for small work the one phase motor, in this post you will learn about the single phase motor wiring with contactor / motor … Stators yoke is part of stators package which extends from stators tooth to end of package. You can detect burned motors winding by unique smell (smells like burned lacquer). 3 phases generates rotation magnetic field so we don't need capacitor on three phase motor. Three phase four wire system is derived from Star Connections (3-Phase, 4 Wires System). Remove rotor from stator. Did you make this project? By the winding head (Type of winding), number of wires in each gap and thickness of the wire you can rewind new motors winding without doing calculations in next step. For better presentation i made 3D model of my stators package. you can get it as an example and do it with all types of motors like single-phase and three-phase. Current in magnetic field generates force. Three phase asynchronous motor is most common used motor in the world. on Step 35, Answer Try not to damage stators lamellas. If you cant find it, you can measure it and find number in catalogue on internet. Measure length of slot, and add about 16mm (depends of how you will twist paper). Motor was made for voltage 380V, but now we have 400V in EU. You get iron filling factor from upper table. Put motor in it. 2 years ago. There is obviously a multiple to understand about this. Take few picture of motor. Resistances of three winding should be same (+/- 5%). Rewinding 3 Phase Motor: Hello everyone, i am Niko and, in this instructables i will show you, how to rewind and renew old three phase electric motor.If you are searching for rewinding of one phase motor you can find it here.In this insctructables, i am going to make step f… I took refurbished motor to university to make measurements. When motor heats up, spills lacquer on motors coils as you see on pictures, 5. Most time i spent on calculation of new winding. 3 Phase, Wire system is not possible in Delta Connection. Number of pole pairs depends on nominal frequencies and rotation speed of magnetic field. Rotor is usually made as squirrel-cage, and it is inserted in stators hole. My new winding was three phase single layer concentric winding. Reply Cut it and twist it as I have done on gifs. Thanks for your reply, I love learning about these things. Place model in right slots, leaving some free space. It's amazing the amount of effort and detail work that goes into it. Careful place coils in stators slots. On the motors inscription board we can find most useful information about motor: Before measuring remove all connections in conduction box. on Step 40. In upper table there is data from manufacturer in first line. Use screwdriver to bend it and insert it in gap. Heat up cooking oven to 100 °C. Stator is made out of iron core and winding. 7 months ago. Remove connections and conduit box from stator. Created with by OmTemplates | Distributed By Blogspot Themes, As you know that we use in every place AC motor for different types of work. Thank you for your attention. 8 months ago. Get info of suppliers, manufacturers, exporters, traders of Printing Machine … I had a lot of problems with calculation but i solved them and i got same parameters of winding as were on old one. You can use wooden stick to put winding in slots. ; 2 it’s a very easy way here to Know The Motor Ohm Values Chart & set up the coil size of the motor. In winding books there is a lot of different types of winding diagrams. External diameter of statros package: Dv= 128mm; Inner diameter of stators package: D= 75.5mm; Width of stators slot: b1= 6.621mm; b2= 8,5mm. The single phase motor are those motor which is working one phase and neutral (ground) supply for doing his duty and a 3 phase motor required 3 phase power source. Remove covers from motor. Hello sir, can you make diagram about 54 slots? How to wire One phase motor with circuit breaker? Then you easily write down filling factor from upper graph. Stator is used to generate magnetic field. I made all tests with two different voltages. Also single phase induction motor will not come into IE2 class. First i made coils too small, and i couldn't insert last coils in slots. Figure 11 – A delta-connected motor that failed because of a single-phase condition, Line 3 is open. Third time i successful rewind motor. Make sure you don't paint inscription board. You find type of bearing on side of bearing. 1 year ago 8 months ago, it is taken from general formula i.e, 1/4.44 = 0.22, Question That's why motor speed is a little bit less then magnetic field speed ((3000 rpm [Magnetic field] -- 2810 rpm [Electric motor])). According to the result you pick a wire which is in +/-2% range of result. While sandblasting you need to be careful, that you don't damage surface too much, especially edges of cowers. You can find all information about type of old winding in "winding head". Winding head is part of winding where all connections are made. Please sir,single phase motor rewinding formula pdf send to gmail adress- pyithein654@gmail.comThank for knowledge sharing. why you divide Bzr*Qp by 1.57 in step 34? If a three-phase motor has been submerged in water but not energized, there’s a good chance it won’t need rewinding or replacing. Heat up winding with flame torch to burn out the rest of lacquer. It took about two days to rewind it, replace all old parts and reassemble it. That makes a lot of sense. There are main two types of AC motors which are single phase and 3 phase. It has very good efficiency and low manufacture and maintain costs. Fantastic detail. Example: 4 pole motor has 90.6 % efficiency means that the motor is called eff2 motors. Free 3d model of winding tools are available on "Rewinding one phase motor" instructables. New winding of motor depends of stators package (dimensions of iron core). You cant pick up winding factor from table if you have one layer winding. Pole surface is marked red on picture two. We would like to show you a description here but the site won’t allow us. If motor is older chose column I, else chose value from column II. Cleaning and baking the …
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