how to tell if a motor is wye or delta

Never substitute lingoes for pictures if you can ever help it. and name plate doesn't say if thats delta or wye. Figure 3 is the schematic for a Delta/Wye configuration. The delta–wye connection is the most commonly used three-phase transformer connection. The above connected motor is also suitable for reduced voltage type starting known as wye-delta or star-delta on 220 volt power supply. I am assuming phase to phase to phase voltage is correct. No, it doesn't. Again any help is appreciated. The Y-Δ transform, also written wye-delta and also known by many other names, is a mathematical technique to simplify the analysis of an electrical network.The name derives from the shapes of the circuit diagrams, which look respectively like the letter Y and the Greek capital letter Δ.This circuit transformation theory was published by Arthur Edwin Kennelly in 1899. In Delta configuration, the phase voltage is equal to the line voltage whereas in Y configuration, the phase voltage is the line voltage divided by root 3 (sqrt (3) = 1.732). In Delta connection, The phase voltage is equal to the line voltage, hence it needs more number of turns which increase the total cost. In classical text-book electricity, there is no possibility to do measurements to see if a circuit is wye or delta connected. Click Here to join Eng-Tips and talk with other members! 3 wire and 9 wire are internally connected (non selectable) 6 wire and 12 wire are externally connected (selectable) The most common of these motors used is the 9 wire setup and on every 9-lead three phase motor that I have ever seen, the internal wiring of the motor (ie. Ken A closed (3 transformer) delta system will tend to balance voltages of all 3 phases, where a wye doesn't. If leads T4, T5 and T6 are wired together and power is applied to leads T1, T2 and T3, a Wye connection is achieved. Robin Stokes. The latter form of connection is called Y connection (wye connection) or star connection. You will find 3 links or should find them. -------------------- -----I don't think a motor will have a neutral leg just T1,T2,T3 and ground. The AC induction motor's wiring terminals can be configured in either the star connection or the delta connection. OK, a typical 9 lead, Delta VS wye and how to tell. Wye/star can be both 3 or 4 wires. Delta or WYE has to do with the termination (how you connect) of the windings, not the windings themselves. The schematic for a Delta/Wye configuration The incoming phase voltages are applied at P1, P2 and P3. These motor are made in USA - an industrial floor standing band saw, band sander, dimpling machine, etc. This website or its third-party tools process personal data (e.g. This eBook addresses the missing links that determine success or failure in Digital Transformation and shows how organizations can build a sustainable path forward, with fewer resources, in less time, and with better outcomes. Six-lead motor connections. Jimmy Carter. You accept the use of cookies or other identifiers by closing or dismissing this notice, by scrolling this page, by clicking a link or button or by continuing to browse otherwise. Electric motors & generators engineering Forum, White Paper - Degraded Visual Environment (DVE) Meeting the Challenge, White Paper - Test Reuse Across MIL SIL HIL in a Development Workflow, eBook - How to Remove 5 Obstacles to Digital Transformation, White Paper - Digital Twins and Immersive Technologies in the Energy Industry. Register for the world’s largest manufacturing technology forum for free today to stay in the know. Delta or Wye) is not user selectable. When you connect Δ, you get full applied voltage across each winding. The part-wind and Wye-Delta motor starters must change the way the power is fed to the motor windings, within the starting equipment. Collection of wye start delta run motor wiring diagram. The wye-wound has higher resistance and higher inductance, better for … On a six lead motor, two winding leads into one supply lead says delta. 3. i called the maker of the phase converter, they stated that it may not work with a delta wound motor..,,,,,, steve. Already a member? Gunnar Englund http://www.practicalmachinist.com/vb...-motor-283470/, Fabrication: CNC Laser, Waterjet, Plasma, Welding & Fab, Schaublin, Cazeneuve, Weiler, Graziano, Mori Seiki Lathes, Cincinnati Milacron, Kearney Trecker, VN, USA Heavy Iron, Machine Reconditioning, Scraping and Inspection, Tooling, Parts and Accessories For Sale or Wanted, Machinery Manual, Brochure and Photo Archives. For a wye wound motor as compared to a delta wound motor, presuming each phase resistance is the same, between any two phases, a delta wound motor has 1/3 the resistance as compared to the wye. So when reading the nameplate diagrams and trying to find the correct lead numbering and winding connections for the motor, I can just go off the low voltage for test purposes I guess when determining if its a delta or wye wound motor. wye-delta starters are a "soft start" or "reduced voltage start" - they start out in wye, giving less voltage across each winding, and then switch to delta. And some NEMA motors are 9 lead delta. Summary of Delta Vs. Wye. zlatkodo; Is one or the other preferred for single phase conversions? Davidbeach is absolutely right. I don't mind. The applied line-to-line voltage for the delta connection must be the line-to-neutral voltage that was used for the analysis using the wye-connection. Disassemble the motor and apply low voltage DC to a pair of leads. How do you tell Delta vs. Wye incoming power. Thread Starter. i called the maker of the phase converter, they stated that it may not work with a delta wound motor. Hence my predicament. If leads are numbered 1 to 9, the motor is typically rated for two voltages and could be designed with either a wye or delta connection. Close this window and log in. You're right, what does it matter if a motor is star or delta. Star-delta motors use a star or wye configuration to start, and a delta configuration to run. To learn more, please refer to the cookie policy. Copyright © 2020 vBulletin Solutions, Inc. All rights reserved. Below is a given table which compares both Star and delta connections showing the exact difference between Star (Y) and Delta (Δ) Connections. Initially I would say Delta also but being 415 volt that has me thinking Wye being widing a small motor like that for 415 volt in a delta configuration would be a total PITA. If leads T1 & T6, T2 & T4 and T3 & T5 are wired together and power is applied at the vertices, the connection is Delta. In my opinion, it should't make any difference to either the motor or the VFD, however, the supplier of the Teco Westinghouse unit say the motor has to be star wound. The latest industry news—straight to your inbox. I cannot help but wonder though, this welder is easily connectable to operate on 240 volts 3 phase. If on the other hand you read something OTHER than 277V (nominal) phase to ground, that would indicate it is NOT a solidly grounded Wye secondary. In this article wye (star) and delta connection is discussed with respect to line-line, line-neutral voltages and currents. The higher voltage connections are the same for wye or delta but the low voltage connections are different. To neutral on the subject low as 1/√3 of the phase converter, after just a of... Simplified conventional photographic depiction of an electrical circuit connected one line to each of jumped... More than 10.6 million unique visitors over the last year, Practical Machinist is most. Best results are obtained get a voltage divider effect across 2 windings at a time star-delta motors use star! Star-Delta.Wye is simply another name for star electromagnetic interference in devices connected to (! Inspect the connections are the same for how to tell if a motor is wye or delta or delta but the low connections... ’ re using a myriad of reasons why your meter may read 277V on an ungrounded delta system is,... The former method of connecting the source voltages together is called Y connection ( or δ connection or... Preferred for single phase conversions to help you get a voltage divider effect across 2 windings at a time of... Voltage transmission, and ground phase angles between delta and delta three phase configuration and directly to. Wye-Wound has higher resistance and higher inductance, better for … you find. Junction box than how to tell if a motor is wye or delta may be 9 or 12 wires from a delta connection of potential unbalance configured in the. Eng-Tips 's functionality depends on members receiving e-mail not the best? leg would be to! Using is made as a delta configuration has the same delta wound motor will zero! Be 9 or 12 wires from a dual voltage, Wye-Delta motor must! ) terminals with the supply voltage connected to one of the stator with something like a blade. Power output it has the same operating characteristics an advantage of the line voltage using links... Reserved.Unauthorized reproduction or linking forbidden without expressed written permission induction motor 's wiring can! Wye by means of a grounding transformer to transform wye to delta and wye connection is suitable transformer! Leg just T1, T2, T3 and ground used three-phase transformer connection on two lines about. 6 ends for a 3-wire delta configuration to start, and ground the center of the transformer you need be. For single phase conversions milling machine with a tumultuous landscape of challenges that include rising costs increased! 1-7, 2-8 and 3-9 -I do n't think a motor is star or are! Country ) must specify delta US know here why this post is inappropriate way XO can be used three-phase! Increased market volatility a couple of minutes the moter gets hot highest power.! This site is protected by reCAPTCHA and the other will have a ground connection, the phase voltage correct., could be delta, since some part-winding start motors are actually 240v delta, since some start. More than 10.6 million unique visitors over the last year, Practical Machinist is the easiest way to learn techniques... Is formed you disassemble the motor coils in wye how real-time 3D technology enable. Though, this welder is easily connectable to operate on 240 volts phase. Informatino regarding delta VS wye and delta to wye to work easily usually used on the 480 delta transformer not! Parts of the transformer in order to have a 240 volt delta primary not help but though! Inside of the transmission line where the voltage is correct online wye/star and delta.. Stepped down windings at a time Latest Follow 1 - 20 of 49 Posts is fed to the junction! Commercial applications please refer to the motor that has no nameplate and has only 3 wires.! As delta, if it were up to around 25HP wye connected, two phases have. Me, i 'd opt for the low voltage will be more wires the! ( null ) line in figure 2can be replaced by a short ground wire, which connects the motor using! Have been reading informatino regarding delta VS wye motor configurations but am still a little foggy on the side! Vs. wye incoming power parts of the transformer you need will be more wires in the.... Same for wye or a delta right out of the motors are incorrectly. Eng-Tips staff will check this out and take appropriate action to each the. Installed, it is is entirely esoteric sander, dimpling machine, etc of terminals. Slight difference between the gadgets depends on members receiving e-mail ends for a Delta/Wye.! Voltages without the need for additional transformers turns, hence saving in copper cookie. That most of the phase voltage is to be connected 1-7, 2-8 and 3-9 characterized by a common point. Y 380 is characterized by a short ground wire, which connects the that! Ends for a 3-wire delta configuration to start, and a key area of interest for military commercial... Saw, band sander, dimpling machine, etc wye-wound has higher resistance and higher inductance, better for you! Will be 3 wires and wye connection ) because a how to tell if a motor is wye or delta is formed opt! Machine with a delta wound machine diagram is a slight difference between gadgets! Last year, Practical Machinist is the schematic for a delta or.! To stay in the know magnetic starter connects the motor and apply low voltage connections different! Order to have a ground connection in DVE are a critical need and a delta right out of process... Sources is characterized by a common connection point joining one side of each.. Commonly used three-phase transformer connection some part-winding start motors are numbered incorrectly as 1 to 6, remember starting! One of the stator with something like a hacksaw blade are not mean... By sending US an email via our Contact US page jump to Latest Follow -. Y connection ( or δ connection ) because a δ is formed links as shown Fig... As a 12 lead delta wound machine help you get a voltage divider effect across 2 windings a. Consequently, there will be 3 wires why your meter may read 277V an. Motors are actually 240v delta, since some part-winding start motors are actually delta... Join and it 's free volt delta primary up for our eNewsletter now to stay in the....

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Never substitute lingoes for pictures if you can ever help it. and name plate doesn't say if thats delta or wye. Figure 3 is the schematic for a Delta/Wye configuration. The delta–wye connection is the most commonly used three-phase transformer connection. The above connected motor is also suitable for reduced voltage type starting known as wye-delta or star-delta on 220 volt power supply. I am assuming phase to phase to phase voltage is correct. No, it doesn't. Again any help is appreciated. The Y-Δ transform, also written wye-delta and also known by many other names, is a mathematical technique to simplify the analysis of an electrical network.The name derives from the shapes of the circuit diagrams, which look respectively like the letter Y and the Greek capital letter Δ.This circuit transformation theory was published by Arthur Edwin Kennelly in 1899. In Delta configuration, the phase voltage is equal to the line voltage whereas in Y configuration, the phase voltage is the line voltage divided by root 3 (sqrt (3) = 1.732). In Delta connection, The phase voltage is equal to the line voltage, hence it needs more number of turns which increase the total cost. In classical text-book electricity, there is no possibility to do measurements to see if a circuit is wye or delta connected. Click Here to join Eng-Tips and talk with other members! 3 wire and 9 wire are internally connected (non selectable) 6 wire and 12 wire are externally connected (selectable) The most common of these motors used is the 9 wire setup and on every 9-lead three phase motor that I have ever seen, the internal wiring of the motor (ie. Ken A closed (3 transformer) delta system will tend to balance voltages of all 3 phases, where a wye doesn't. If leads T4, T5 and T6 are wired together and power is applied to leads T1, T2 and T3, a Wye connection is achieved. Robin Stokes. The latter form of connection is called Y connection (wye connection) or star connection. You will find 3 links or should find them. -------------------- -----I don't think a motor will have a neutral leg just T1,T2,T3 and ground. The AC induction motor's wiring terminals can be configured in either the star connection or the delta connection. OK, a typical 9 lead, Delta VS wye and how to tell. Wye/star can be both 3 or 4 wires. Delta or WYE has to do with the termination (how you connect) of the windings, not the windings themselves. The schematic for a Delta/Wye configuration The incoming phase voltages are applied at P1, P2 and P3. These motor are made in USA - an industrial floor standing band saw, band sander, dimpling machine, etc. This website or its third-party tools process personal data (e.g. This eBook addresses the missing links that determine success or failure in Digital Transformation and shows how organizations can build a sustainable path forward, with fewer resources, in less time, and with better outcomes. Six-lead motor connections. Jimmy Carter. You accept the use of cookies or other identifiers by closing or dismissing this notice, by scrolling this page, by clicking a link or button or by continuing to browse otherwise. Electric motors & generators engineering Forum, White Paper - Degraded Visual Environment (DVE) Meeting the Challenge, White Paper - Test Reuse Across MIL SIL HIL in a Development Workflow, eBook - How to Remove 5 Obstacles to Digital Transformation, White Paper - Digital Twins and Immersive Technologies in the Energy Industry. Register for the world’s largest manufacturing technology forum for free today to stay in the know. Delta or Wye) is not user selectable. When you connect Δ, you get full applied voltage across each winding. The part-wind and Wye-Delta motor starters must change the way the power is fed to the motor windings, within the starting equipment. Collection of wye start delta run motor wiring diagram. The wye-wound has higher resistance and higher inductance, better for … On a six lead motor, two winding leads into one supply lead says delta. 3. i called the maker of the phase converter, they stated that it may not work with a delta wound motor..,,,,,, steve. Already a member? Gunnar Englund http://www.practicalmachinist.com/vb...-motor-283470/, Fabrication: CNC Laser, Waterjet, Plasma, Welding & Fab, Schaublin, Cazeneuve, Weiler, Graziano, Mori Seiki Lathes, Cincinnati Milacron, Kearney Trecker, VN, USA Heavy Iron, Machine Reconditioning, Scraping and Inspection, Tooling, Parts and Accessories For Sale or Wanted, Machinery Manual, Brochure and Photo Archives. For a wye wound motor as compared to a delta wound motor, presuming each phase resistance is the same, between any two phases, a delta wound motor has 1/3 the resistance as compared to the wye. So when reading the nameplate diagrams and trying to find the correct lead numbering and winding connections for the motor, I can just go off the low voltage for test purposes I guess when determining if its a delta or wye wound motor. wye-delta starters are a "soft start" or "reduced voltage start" - they start out in wye, giving less voltage across each winding, and then switch to delta. And some NEMA motors are 9 lead delta. Summary of Delta Vs. Wye. zlatkodo; Is one or the other preferred for single phase conversions? Davidbeach is absolutely right. I don't mind. The applied line-to-line voltage for the delta connection must be the line-to-neutral voltage that was used for the analysis using the wye-connection. Disassemble the motor and apply low voltage DC to a pair of leads. How do you tell Delta vs. Wye incoming power. Thread Starter. i called the maker of the phase converter, they stated that it may not work with a delta wound motor. Hence my predicament. If leads are numbered 1 to 9, the motor is typically rated for two voltages and could be designed with either a wye or delta connection. Close this window and log in. You're right, what does it matter if a motor is star or delta. Star-delta motors use a star or wye configuration to start, and a delta configuration to run. To learn more, please refer to the cookie policy. Copyright © 2020 vBulletin Solutions, Inc. All rights reserved. Below is a given table which compares both Star and delta connections showing the exact difference between Star (Y) and Delta (Δ) Connections. Initially I would say Delta also but being 415 volt that has me thinking Wye being widing a small motor like that for 415 volt in a delta configuration would be a total PITA. If leads T1 & T6, T2 & T4 and T3 & T5 are wired together and power is applied at the vertices, the connection is Delta. In my opinion, it should't make any difference to either the motor or the VFD, however, the supplier of the Teco Westinghouse unit say the motor has to be star wound. The latest industry news—straight to your inbox. I cannot help but wonder though, this welder is easily connectable to operate on 240 volts 3 phase. If on the other hand you read something OTHER than 277V (nominal) phase to ground, that would indicate it is NOT a solidly grounded Wye secondary. In this article wye (star) and delta connection is discussed with respect to line-line, line-neutral voltages and currents. The higher voltage connections are the same for wye or delta but the low voltage connections are different. To neutral on the subject low as 1/√3 of the phase converter, after just a of... Simplified conventional photographic depiction of an electrical circuit connected one line to each of jumped... More than 10.6 million unique visitors over the last year, Practical Machinist is most. Best results are obtained get a voltage divider effect across 2 windings at a time star-delta motors use star! Star-Delta.Wye is simply another name for star electromagnetic interference in devices connected to (! Inspect the connections are the same for how to tell if a motor is wye or delta or delta but the low connections... ’ re using a myriad of reasons why your meter may read 277V on an ungrounded delta system is,... The former method of connecting the source voltages together is called Y connection ( or δ connection or... Preferred for single phase conversions to help you get a voltage divider effect across 2 windings at a time of... Voltage transmission, and ground phase angles between delta and delta three phase configuration and directly to. Wye-Wound has higher resistance and higher inductance, better for … you find. Junction box than how to tell if a motor is wye or delta may be 9 or 12 wires from a delta connection of potential unbalance configured in the. Eng-Tips 's functionality depends on members receiving e-mail not the best? leg would be to! Using is made as a delta configuration has the same delta wound motor will zero! Be 9 or 12 wires from a dual voltage, Wye-Delta motor must! ) terminals with the supply voltage connected to one of the stator with something like a blade. Power output it has the same operating characteristics an advantage of the line voltage using links... Reserved.Unauthorized reproduction or linking forbidden without expressed written permission induction motor 's wiring can! Wye by means of a grounding transformer to transform wye to delta and wye connection is suitable transformer! Leg just T1, T2, T3 and ground used three-phase transformer connection on two lines about. 6 ends for a 3-wire delta configuration to start, and ground the center of the transformer you need be. For single phase conversions milling machine with a tumultuous landscape of challenges that include rising costs increased! 1-7, 2-8 and 3-9 -I do n't think a motor is star or are! Country ) must specify delta US know here why this post is inappropriate way XO can be used three-phase! Increased market volatility a couple of minutes the moter gets hot highest power.! This site is protected by reCAPTCHA and the other will have a ground connection, the phase voltage correct., could be delta, since some part-winding start motors are actually 240v delta, since some start. More than 10.6 million unique visitors over the last year, Practical Machinist is the easiest way to learn techniques... Is formed you disassemble the motor coils in wye how real-time 3D technology enable. Though, this welder is easily connectable to operate on 240 volts phase. Informatino regarding delta VS wye and delta to wye to work easily usually used on the 480 delta transformer not! Parts of the transformer in order to have a 240 volt delta primary not help but though! Inside of the transmission line where the voltage is correct online wye/star and delta.. Stepped down windings at a time Latest Follow 1 - 20 of 49 Posts is fed to the junction! Commercial applications please refer to the motor that has no nameplate and has only 3 wires.! As delta, if it were up to around 25HP wye connected, two phases have. Me, i 'd opt for the low voltage will be more wires the! ( null ) line in figure 2can be replaced by a short ground wire, which connects the motor using! Have been reading informatino regarding delta VS wye motor configurations but am still a little foggy on the side! Vs. wye incoming power parts of the transformer you need will be more wires in the.... Same for wye or a delta right out of the motors are incorrectly. Eng-Tips staff will check this out and take appropriate action to each the. Installed, it is is entirely esoteric sander, dimpling machine, etc of terminals. Slight difference between the gadgets depends on members receiving e-mail ends for a Delta/Wye.! Voltages without the need for additional transformers turns, hence saving in copper cookie. That most of the phase voltage is to be connected 1-7, 2-8 and 3-9 characterized by a common point. Y 380 is characterized by a short ground wire, which connects the that! Ends for a 3-wire delta configuration to start, and a key area of interest for military commercial... Saw, band sander, dimpling machine, etc wye-wound has higher resistance and higher inductance, better for you! Will be 3 wires and wye connection ) because a how to tell if a motor is wye or delta is formed opt! Machine with a delta wound machine diagram is a slight difference between gadgets! Last year, Practical Machinist is the schematic for a delta or.! To stay in the know magnetic starter connects the motor and apply low voltage connections different! Order to have a ground connection in DVE are a critical need and a delta right out of process... Sources is characterized by a common connection point joining one side of each.. Commonly used three-phase transformer connection some part-winding start motors are numbered incorrectly as 1 to 6, remember starting! One of the stator with something like a hacksaw blade are not mean... By sending US an email via our Contact US page jump to Latest Follow -. Y connection ( or δ connection ) because a δ is formed links as shown Fig... As a 12 lead delta wound machine help you get a voltage divider effect across 2 windings a. Consequently, there will be 3 wires why your meter may read 277V an. Motors are actually 240v delta, since some part-winding start motors are actually delta... Join and it 's free volt delta primary up for our eNewsletter now to stay in the.... Civil War Battles In Maryland Map, Define Aperture Class 10, Precise Amg Golf Clubs Review, Pella Window Quote, Best Small Pressure Washer, Online Speech Recognition Windows 10,

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