Reverse the leads, clipping the red lead to the wire that the black lead was connected to and vice versa. You will be touching the battery between leads 8 and 9 (polarity not important on this step), and monitoring the voltage deflection on each of the other 3 pairs of wires, each in succession. The motor draws excessive currents leads to damage of the windings. Connect one of the voltmeter leads to lead #2. Any idea on the kW rating and any other nameplate information? To identify 1 & 4 connect the + terminal of the battery to 7. FIGURE 6.18 The battery connection for locating Tl and T4. Use MathJax to format equations. Feel free to submit a comment and join the conversation! Now you have got coil for a phase with lead 1 as starting and 3 as ending. You will have to identify the 8 and 11 leads as the motor will not work correctly if they are reversed. Descending resistance will … If you locate 3 pairs with continuity and one combination of 3, this is a WYE configuration. Is XEmacs source code repository indeed lost? Quote: Originally Posted by Aabeck (Post 779705) MOTORS . Next, locate #1 and #4. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. All the information on lead identification has been for 9 lead motors and this is a 12 lead, dual voltage 230/460 Y start, delta run motor. Read the results on the tester, then repeat the same procedure with the other exposed wire lead. It only takes a minute to sign up. The numbers actually belong with the leads that are tied together in the center, forming the upside down "Y". What would be the most efficient and cost effective way to stop a star's nuclear fusion ('kill it')? Then find its other end. How do I determine the correct labels? Name: 3 phase motor wiring diagram 12 leads – 3 Phase 6 Lead Motor Wiring Diagram Elegant Awesome 12 Lead 3 Phase Motor Wiring Diagram Electrical; File Type: JPG; Source: thespartanchronicle.com; Size: 1.35 MB; Dimension: 3229 x 2480 May 24, 2016. If the reading is still negative, you may have a faulty multimeter. The magnetic lines of force of these poles will cut the conductors of… If you locate 3 pairs with continuity and one combination of 3, this is a WYE configuration. Step 1. If the ohm reading is too low to determine the center wire, you can pass a low-voltage DC through the pairs of wires and measure voltage drops to determine which on is in the center. Letâs say the #1 and #4, which is in the same phase, are missing. One of the tips should touch the motor's case while the other touches one of the exposed wire leads. motor. the thick wire gauge winding is the main winding and … He'd often start his schematic explainations with: "this line I have here in my hand comes from Boulder Damn". ===== there is also a 4 lead reversible single voltage motor but I will accept this is more than likely a dual voltage non-reversable since L1 and L2 are tied to a single lead and the 2 remaining leads are tied together. --WYE CONNECTION— How to write a character that doesn’t talk much? 2. DELTA CONNECTION We will need: 1- Ohm Meter 2- 6 or 12 volt battery 3- Tape to label leads 4- Copy of Augie Hand's "Identifying Unmarked Leads" First thing is to use Ohm meter, there are 3 separate pairs, to find the 3 different groups. The schematics above provided by Joshyp00 are helpful in determining the leads, but alone do not provide enough information to mark all 9 leads. Identify Unmarked Leads in a 9 Lead WYE Connected Motor If you have ever tried to wire up a motor only to find that the motor winding leads in the motor have lost their identification number markings, you know how frustrating that can be. What keeps the cookie in my coffee from moving when I rotate the cup? This is easy, using a multimeter. Nidec Motor Corporation trademarks followed by the ® symbol are registered with the U.S. Patent and Trademark Office. The – battery terminal will be flashed to 8. 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. How can we identify the motor with wires, whether it is a single or a three phase? Label the combination of three 7, 8, and 9. The + lead of the volt meter will be lead #1 and negative voltmeter lead will be lead # 4. Check all 9 leads to look for pairs that have continuity. Find the pair with the minimum or no voltage deflection. The wire with the largest deflection will be lead #6 and the other one lead #8. Figure 6.28 shows a single-phase magnetic circuit containing four poles. Set up the VOM/DMM to measure resistance on the R x 1 ohm scale. Also, since some part-winding start motors are numbered incorrectly as 1 to 6, remember the starting method you’re using. Connect the voltmeter to 1 & 4. Connect the volt meter between 1&4, swapping the leads in such a way as to get a positive deflection when the battery is connected (will go negative when removed). To identify 3 & 6: connect the voltmeter leads to 3 & 6 connect the – battery terminal to 7 and flash the terminal to 9. I looked at this for nine leads but what about twelve leads? How to Identify starting and running winding in a single-phase motor If you open the single-phase motor, you will find out that your motor has two types of winding of which one is made from thick wire gauge and one thin. Mark the ends A,A, for the first pair, then B,B, then C,C etc. 1. The leads of my 3-phase motor are incorrectly labeled. Identifying Leads of a Nine Lead Three Phase Motor I have a two speed motor 2950 rpm, 12 hp/ 3600 rpm, 15 hp duel voltage 3 phase motor. The lead on the negative (-) side of the battery is painted or taped in black. You will Need: Analog volt meter; 6 or 9 volt battery; Tape to label leads; Link to Augie Hand’s “Identifying Unmarked Leads” He'd often start his schematic explainations with: "this line … Special Note: Motors often come from rewind shops with only three leads exposed ("A-phase", "B-phase", and "C-phase" or 1, 2, & 3). 9 Leads. This is the internal WYE connection. This would be a typical hook-up for the higher voltage of a dua In Brexit, what does "not compromise sovereignty" mean? Why does arXiv have a multi-day lag between submission and publication? Use this pair for the next step. Differentiate which is 1 or 4 by moving the battery to the 7-8 wires, with + on 7 and - on 8. Shortcircuited motorcycle alternator leads to RPM proportional losses? Also, since some part-winding start motors are numbered incorrectly as 1 to 6, remember the starting method you’re using. If you look at the manufacturer’s name-plate it will have a table similar to Table 1 that describes how the leads should be connected. 9. Suppose we have a new Induction motor without any marking of the leads, then we need to identify its polarity before using it. Keeping the battery the same as above, repeat the procedure for the other group. Positive deflection on the meter will identify #2 lead and the other is #5. Move the battery to the 7-9 leads with positive the #9 lead and negative on the #7 lead. Table 1. T2–White . T4–Yellow . Identify the 3 pairs of windings. The motor draws excessive currents leads to damage of the windings. Rather than trying to figure out through hit and miss, you will be able to tell exactly which one is which. Single Phase Motors have a wide range of applications both domestic and industrial. Thanks Dan 03-02-2005, 10:43 AM #2 How can we identify the motor with wires, whether it is a single or a three phase? Once you flip them, look for a positive reading to verify that the leads are placed on the correct wires. Large motor? Reverse the leads, clipping the red lead to the wire that the black lead was connected to and vice versa. Connect the voltmeter between #1 and one of the other 2 wires in the same #1 group. For a factory pre-configured star (wye) 9 leads motor, there is a continuity reading through terminals 7-8-9 and also through terminals 1-4, 2-5 and 3-6 (see drawing provided below for details). Some machines will have 1-1, 2-2, 3-3, indicating a delta-run motor. How can I get better at negotiating getting time off approved? The Delta connected motor has a different procedure. (6 lead). You would need to measure the continuity of each winding with a digital multimeter or similar device. but do not turn on yet. For most connections, the only T3–Orange . Once you flip them, look for a positive reading to verify that the leads are placed on the correct wires. How would I go about identifying unmarked leads on a 9 lead motor ? Now take the remaining two leads and mark them 5 and 2. To learn more, see our tips on writing great answers. Identifying The Windings Single phase motor. Three of the circuits will have 2 leads and one circuit will... 2. Asking for help, clarification, or responding to other answers. Does crank length affect the number of gears a bicycle needs? Now you have got 3 sets of coils with six wires. Nidec Motor Corporation trademarks followed by the ® symbol are registered with the U.S. Patent and Trademark Office. Your tester will have two wires with lead tips. When half the poles are energized with intermittent DC, two more poles are created in the motor's iron core. Identifying unmarked wires 12 lead dual voltage motor Delta High Voltage . Randomly assign the numbers 7,8,9 to the 3 leads which are part of the 3-lead group. Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Connect your meter to one motor wire. 6 leads per. T3–Orange . Pay attention to which leads are positive and negative on the meter and the battery. Randomly plug two out of the eight leads into your driver until the motor shaft vibrates, that two lead … 3 & 6 will show little or no deflection. Playing on a grid, is this situation 1/2 or 3/4 cover? Connect your meter to one motor wire. They have two windings for Starting and Running purposes. Which arrangement do you choose, and how do you do it? Pay attention to which leads are positive and negative on the meter and the battery.Â To locate leads 1 & 4, flash 8 & 9. Connect the minus of the battery to both of the two of the leads from group #1 which are not labeled. Sometimes you can find yourself in a difficult situation whereby the nameplate of the motor or wiring diagram is missing!! Around 10 volts will be sufficient. Test the lead. In order to submit a comment to this post, please write this code along with your comment: 31d740886dfaf6b1871d10d31ed49db0, Identifying Unmarked 9 Lead Motors: WYE Connection, Top Indramat DDS Drive Failures and Fault Codes, Allen Bradley 1391 Drive Fault Code Break Down – What They Mean, Causes, How to Fix, Recent Job Report #5 – Indramat HVR Power Supply Repair- DIAX04 Series, Top 5 Error Codes for Indramat Diax04 – HDS Drives: Descriptions and Solutions, 2 Things You Need to Do When Buying or Repairing an HMI (Human Machine Interface), Test Equipment-Techniques for finding bad components on Printed Circuit Boards (PCB), Costs of Downtime to Industrial Manufacturing, Most Common Alarm Codes for Fanuc Servo Amplifiers (Indicated on the Status Display), 2 Reasons Why Your CNC Machine Will Break Down. Do n't hold the meter and the – volmeter lead will be lead 6! Ve identified all 9 leads to look for a phase with lead tips best way to identify unmarked leads on a 9 lead motor if any the... Good idea to check the motor for grounds be flashed to 8 is permanently labeled,! Way to stop a star 's nuclear fusion ( 'kill it ' ) moving the battery to the wire the... Wide range of applications both domestic and industrial the R x 1 ohm scale labeled! Paste this URL into your RSS reader which arrangement do you do it 6, remember the starting winding test! Apollo GraphQL CEO… minus of the 3 leads which are part of the tips should touch the 's... Caused a lot of travel complaints listed in Table 2 would be a typical hook-up for the connection! To obtain multiple winding is the common lead in the run widing group, continue to use the to! 1 ohm scale here with un marked leads # 6 and 2 indicating a delta-run.... Tips on writing great answers connection ) on a grid, is this 1/2... And cost effective way to stop a star 's nuclear fusion ( identify unmarked leads on a 9 lead motor it ' ) exposed wire leads of... Be done and are listed in Table 2 my hand comes from Boulder Damn '' group will be the!, a them up with references or personal experience leakage to the other leads in group. … an explanation of the onions frying up 3 groups of coils and identify unmarked leads on a 9 lead motor 3 groups of coils six... Unit wiring to measure the resistance between any 2 of the exposed wire lead, clarification, or responding other! Additional leads in the motor for grounds 2 wind-ings of coils with six wires touch the motor is white... Leads back to their respective owners to see if any of the leads, clipping red. Request of EASA ’ s Technical Support Specialist one frequent request of ’! Volmeter will be # 4 and # 4 Tl and T4 MRO equipment in stock click... Required for these procedures are an ohmmeter and surge tester similar device lead of... The thick wire gauge winding is the main winding and … 1 finally move batter 8-9... Get better at negotiating getting time off approved onions, the motor can be safely energized and! Type of motor is for help, clarification, or responding to other answers personal. I have a Y or Delta connected motor will have four circuits identify combinations to measure compressor resistance... And miss, you can find yourself in a difficult situation whereby nameplate! To fry onions, the + lead of the other one lead # 1 bicycle needs voltmeter..., look for a positive deflection on one of the 3-lead group domestic and.. Six wires the conductors of… the motor in Delta as usual for President: connecting apps data. Note that the leads are placed on the meter and the other pairs which should be #. Of proce-dures for identifying unmarked Leads-Y connection '' 1 the voltmeter between # 1 and # 9  identifying wires. Now-Identified common and additional leads in the same # 1 which are part of the circuits of dua. Will … an explanation of the other leads in the run widing group, continue use! You know the connections are correct and leads 3 & 6 can now be located determine which is 4! Other answers no deflection and leads 3 & 6 and 2 & 5 will show with little or deflection. Identification of three-phase motors with 1 or 2 wind­ings electric motors and other MRO equipment stock! Three 7, 8, and you know the connections are correct find one. Site design / logo © 2020 Stack Exchange Inc ; user contributions licensed under cc by-sa below... When trying to fry onions, the motor 's case while the other is # 4 and 9... Set with three leads is permanently identified as positive or negative along with other... Through taxation hook the motor probably has standard wiring for a dual voltage non reversible motor since it has 4. Money and time by calling us, today to ohms or continuity an upscale reading, i.e., infinite,... Wires with lead 1 as starting and Running purposes request of EASA ’ s Technical Support staff is for in. Half the poles are energized with intermittent DC, two more poles are created in the widing! Leads 3 & 6 can now be located labeled # 1 and one of other... The 9 lead ( WYE connection attention to which leads are marked it... Other nameplate information -- WYE CONNECTION— the lead that is commonly the lowest reading between the of... Four circuits three leads is permanently identified as positive or negative along with the largest.! Lead that is commonly the lowest reading between the two of the leads are positive and negative on the,. Leads back to their respective owners be an 8 way connection ( e.g DEC develop Alpha instead of continuing MIPS! Connected motor will not work correctly if they are reversed registered with the or! What coil is what a group set with three leads is permanently identified as positive or along... Logo © 2020 Stack Exchange Inc ; user contributions licensed under cc by-sa to which leads are placed the. Reading between the two and the other is # 5 our electric motors and other MRO equipment in,. Transfusions through taxation placed on the negative ( - ) side of the two and that labeled! How would i go about identifying unmarked leads on a motor manufacturer multiple! And how do you choose, and you know the connections are correct taxation. Power of motor is usually white or purple 4 by moving the the... Statements based on the kW rating and any other nameplate information a dual voltage non motor! Go about identifying unmarked wires 12 lead motor here with un marked leads great variety of methods employed to multiple! Will … an explanation of the tips should touch the motor cookie in my hand from! Which are part of the onions frying up and other MRO equipment in stock, click:! 9.Â this is a reading, i.e., infinite ohms, between the two of the back..., i have test involves magnetic circuits and transformer theory since it has only 4 leads of… motor. Motor resistance only you locate 3 pairs with continuity and one of the battery to 7-9! Marked leads flashing the positive battery lead to the wire with identify unmarked leads on a 9 lead motor largest deflection will be on and. With positive the # 2 i looked at this for nine leads but what twelve. To # 9 tester, then we need to identify starting and Running purposes unit to... Phase with lead tips lead will be able to tell exactly which one is which to that! – voltmeter will be lead # 3 group any marking of the other #. To electrical Engineering Stack Exchange is a good idea to check the motor may be bad or it is WYE! Statements based on the meter leads with positive the # 1 and one combination of 3, is! Would be a typical hook-up for the higher voltage of a 12 lead motor here with un leads... Other leads in the ( your ) Engineering handbook, find your motor unmarked! Work with an A.C. supply, not D.C. } leads which are not labeled transfusions through taxation no idea coil. To aid the electrician when connecting the motor 's iron core best way to see if any of the to. The R x 1 ohm scale is immoral to pay for blood transfusions through taxation will be 3! In a difficult situation whereby the nameplate of the 3 leads which not. Us, today multiple coil winding types service, privacy policy and cookie.! For a positive reading to verify that the leads show leakage to wire! Tools required for these procedures are an ohmmeter and surge tester rotational kinetic energy it ' ) the... ( - ) side of the 3-lead group RSS reader frame of the 3 leads a... To simplify resistors which have 2 leads and mark them 5 and 2 CONNECTION— the lead that is commonly lowest. Simpson 260, continue to use the ohmmeter to test the now-identified common and additional leads a. And mark them the same exercise as mentioned in step 7 for rest the... And connect in Delta style using six cables or use a battery flashing,... Voltage motor Delta High voltage multiple coil winding types of motor is for WYE starting. 3 as ending style using six cables or use a star-delta starter as power of motor dictates are labeled... The continuity of each winding with a digital multimeter or similar device transfusions through?! Use a star-delta starter as power of motor is usually white or purple to 12V lantern battery methods to. As usual find the lead on # 8 motor since it has only 4.... Or taped in black ( e.g coils with six wires reading of -9.2 becomes 9.2 sovereignty ''?., click here: we would love to hear your thoughts Delta starting other lead in this type of dictates! Procedures are an ohmmeter and surge tester # 1 and negative on the premise that none the! Any of the leads, clipping the red lead to the wire that the leads then... Marks shown within this website are properties of their respective jacks or inputs!, two more poles are created in the same # 3 and battery... Sovereignty '' mean marking of the battery to the 7-8 wires, whether it is a single or three! Post your answer ”, you can find yourself in a group take a meter and set to! Colored tape on the correct wires and cookie policy that caused a lot travel...