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identify unmarked leads on a 9 lead motor

identify unmarked leads on a 9 lead motor

T8–Red . The magnetic lines of force of these poles will cut the conductors of… Which arrangement do you choose, and how do you do it? leads from the first test is the common. If the reading is still negative, you may have a faulty multimeter. 17. If there is a reading, the motor may be bad or it is a different type of motor other than an AC induction. Making statements based on opinion; back them up with references or personal experience. This is the internal WYE connection. Large motor? How to write a character that doesn’t talk much? To identify 3 & 6: connect the voltmeter leads to 3 & 6 connect the – battery terminal to 7 and flash the terminal to 9. The markings on the external leads of a motor sometimes become defaced or are removed, which makes it neces­sary to identify and mark them before the motor can be properly connected to the line. T3–Orange . Your tester will have two wires with lead tips. FIGURE 6.17 Identifying the circuits of a nine-lead wye-connected motor with unmarked leads. Next, locate #1 and #4. Mark the ends A,A, for the first pair, then B,B, then C,C etc. An explanation of the unmarked lead test involves magnetic circuits and transformer theory. Figure 6.28 shows a single-phase magnetic circuit containing four poles. Suppose we have a new Induction motor without any marking of the leads, then we need to identify its polarity before using it. The leads of my 3-phase motor are incorrectly labeled. Now take the remaining two leads and mark them 5 and 2. Step 1. T5–Black . mode tart run wye double delta (extended delta) 1.2 1.3 3 open together nema nomenclature—9 leads wye connected (low voltage only) motor leads 1 2 3 9 nema and 'ec nomenclature—12 leads single voltage or low voltage of dual-voltage motors iec wi/ v5v2 vi nema iec 12 1 9/\4 nema 31 wi,v2 ui 85 vi,u2 7,12 u5,w6 8,10 v5,u6 9,11 w5,v6 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 this set 3 and 6. Mark this set 1 and 4. MOTORS . Descending resistance will give you ascending speeds. First identify combinations. Proceed with the step 7 for rest of the coils and identify 3 groups of coils. This article introduces a set of proce­dures for identifying unmarked leads of 6-lead motors with 1 or 2 wind­ings. Keeping the battery the same as above, repeat the procedure for the other group. Connect the voltmeter to 1 & 4. This is the internal WYE connection. I also need to establish wheather this is wires delta or Y. 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). I really hope someone can tell me how to identify the leads on this motor I have. 2. 9 Leads. Did something happen in 1987 that caused a lot of travel complaints? 2 & 5 will show strong deflection. Do Jehovah Witnesses believe it is immoral to pay for blood transfusions through taxation? A Y-connected motor will have 3 groups of 2 wires each which show nearly 0-ohms between each pair, and a 4th group which shows near 0-ohms between 3 wires. 9. Read the results on the tester, then repeat the same procedure with the other exposed wire lead. To locate leads 1&4, Flash 8&9 as illustrated. The deflection occurs when the battery is connected. If there are just 9 unmarked leads, and it is a three phase AC motor, you will also need to determine the phasing of each winding before attempting to connect it. I can positively identify 6 leads but not the rest (wires cut). Finally move batter to 8-9 pair with + lead on #8 and negative flashed to #9. Randomly plug two out of the eight leads into your driver until the motor shaft vibrates, that two lead … You will Need: Analog volt meter; 6 or 9 volt battery; Tape to label leads; Link to Augie Hand’s “Identifying Unmarked Leads” motors because of the great variety of methods employed to obtain multiple . How can we identify the motor with wires, whether it is a single or a three phase? A megger is the best way to see if any of the leads show leakage to the frame of the motor. When half the poles are energized with intermittent DC, two more poles are created in the motor's iron core. Follow installation drawings, but if those aren't available, determine how many leads a motor has before installing it. I don't know how to simplify resistors which have 2 grounds. Next, locate #1 and #4. Next, use an ohm-meter to determine if the motor is Y or Delta connected. You will also a sensitive ohm meter. Take another wire not marked and find both ends. Connect this supply to the wire A,A. This step will require a volt-ohm tester. It should become fairly obvious whether it is in star or delta once you start taking the measurements as there can only be a certain pattern of readings - providing the windings are in sound condition. When trying to fry onions, the edges burn instead of the onions frying up. You will need a 6 or 12 V lantern battery and preferable an analog voltmeter, like the old Simpson 260. Connect the voltmeter between #1 and one of the other 2 wires in the same #1 group. The motor draws excessive currents leads to damage of the windings. For the delta connection, a sensitive ohm-meter usually works at least on smaller motors. Identify the 3 pairs of windings. 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. 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. Test the lead. The 9 lead Y connected motor will have four circuits. Once you flip them, look for a positive reading to verify that the leads are placed on the correct wires. I was previledged to know an old Motor Rewind Man. † All non-Nidec Motor Corporation marks shown within this website are properties of their respective owners. You will be flashing the positive battery lead to the other lead which should be labeled #1. (989)922-0043 . Twelve lead motors are not that uncommon. Use this pair for the next step. 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. Mark this set 1 and 4. How do I determine the correct labels? T4–Yellow . Table 1. Make sure the meter is zeroed. † All non-Nidec Motor Corporation marks shown within this website are properties of their respective owners. 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. For most connections, the only tools required for these procedures are an ohmmeter and surge tester. Connect the motor in delta style using six cables or use a star-delta starter as power of motor dictates. 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. All 9 leads motors are most commonly made for dual voltage application, this means that the motor was manufactured specifically for dual voltage operation which can be connected in either 220 volts or 440 volts configuration. Pay attention to which leads are positive and negative on the meter and the battery. Put different colored tape on the wires in each group to keep the groups separate. To identify 1 & 4 connect the + terminal of the battery to 7. Conceivably it could be an 8 way connection (e.g. Your tester will have two wires with lead tips. 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. but do not turn on yet. 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 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. Label the set of 3: 7,8, and 9. Pay attention to which leads are positive and negative on the meter and the battery. To locate leads 1 & 4, flash 8 & 9. Quote: Originally Posted by Aabeck (Post 779705) If there are additional leads in the run widing group, continue to use the ohmmeter to test the now-identified common and additional leads. leads from the first test is the common. Label the combination of three 7, 8, and 9. This is the internal WYE connection. T2–White . I still have no luck. Identify unmarked leads on a 9 lead motor, Podcast 293: Connecting apps, data, and the cloud with Apollo GraphQL CEO…. The Delta connected motor has a different procedure. Usually six terminals from the three phases of an induction motor are available. Find lead #3 by looking for a positive deflection on one of the other pairs. Thanks Dan 03-02-2005, 10:43 AM #2 In addition, note that the common lead in this type of motor is usually white or purple. Save money and time by calling us, today! Have Texas voters ever selected a Democrat for President? I would like to hook the motor up and test but have no idea what coil is what. The schematics above provided by Joshyp00 are helpful in determining the leads, but alone do not provide enough information to mark all 9 leads. {Note that this will only work with an A.C. supply, not D.C.}. Identify the nine motor leads as follows: T1 = i T2 = h T3 = f T4 = c T5 = b T6 = g T7 = a T8 = e T9 = d For low voltage (240 volt) operation, connect leads T4-T5-T6 together with a wire nut. The lead on the negative (-) side of the battery is painted or taped in black. Shortcircuited motorcycle alternator leads to RPM proportional losses? Augie Hands "Identifying Unmarked Leads-Y Connection" 1. Reverse the leads, clipping the red lead to the wire that the black lead was connected to and vice versa. The other lead in the group will be #5. If the reading is still negative, you may have a faulty multimeter. (Don't hold the meter leads with your fingers as you will get a resistance reading through your body). This article will address lead identification of three-phase motors with 9 leads, based on the premise that none of the leads are marked. Electrical Engineering Stack Exchange is a question and answer site for electronics and electrical engineering professionals, students, and enthusiasts. Check all 9 leads to look for pairs that have continuity. Identify the three sets of two and the one set of three using the test light or ohmmeter. For instance, check that a reading of -9.2 becomes 9.2. Figure 6.28 shows a single-phase magnetic circuit containing four poles. 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. How can we identify the motor with wires, whether it is a single or a three phase? Flash 8 with the + battery terminal. The motor draws excessive currents leads to damage of the windings. the thick wire gauge winding is the main winding and the thin wire gauge winding is the starting winding. Now take the remaining two leads and mark them 5 and 2. 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). There should not be any ohm reading, i.e., infinite ohms, between the groups. Single Phase Motors have a wide range of applications both domestic and industrial. If there are additional leads in the run widing group, continue to use the ohmmeter to test the now-identified common and additional leads. For what block sizes is this checksum valid? The leads are numbered to aid the electrician when connecting the motor. The other lead is #6. A Delta connected motor will have 3 groups of 3 wires each which show near 0-ohms (see diagrams above). What keeps the cookie in my coffee from moving when I rotate the cup? the thick wire gauge winding is the main winding and … The magnetic lines of force of these poles will cut the conductors of… Some machines will have 1-1, 2-2, 3-3, indicating a delta-run motor. How to filter paragraphs by the field name on parent using entityQuery? MOTOR WIRING DIAGRAM 466703 12 Lead, Single Voltage, Wye Start – Delta Run or Part Winding Start Revised: 1/8/2014 NIDEC MOTOR CORPORATION ST. LOUIS, MISSOURI. In addition, note that the common lead in this type of motor is usually white or purple. Hi, I have a 12 lead motor here with un marked leads. Three of the circuits will have 2 leads and one circuit will have 3 leads. The set with three leads is permanently labeled 7, 8, and 9. You will be monitoring the other two leads from the #2 group to find the one with the largest deflection. 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. Test all the combinations in one … I have a 5 hp rockwell motor with 9 unmarked leads ,is there a process that I can use to find out how to hook this thing up or identify the leads. Employee barely working due to Mental Health issues. Nidec Motor Corporation trademarks followed by the ® symbol are registered with the U.S. Patent and Trademark Office. Why does arXiv have a multi-day lag between submission and publication? Move the battery to the 7-9 leads with positive the #9 lead and negative on the #7 lead. P2–Brown I was previledged to know an old Motor Rewind Man. Any idea on the kW rating and any other nameplate information? The wire with the largest deflection will be #4. Read the results on the tester, then repeat the same procedure with the other exposed wire lead. This will be the 1-4 pair. By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy. This article introduces a set of proce-dures for identifying unmarked leads of 6-lead motors with 1 or 2 wind-ings. Connect your meter to one motor wire. Take another wire not marked and find both ends.  Leads 3 & 6 can now be located. 1. Obtaining these continuity readings confirms that the motor is internally configured for a … Find the pair with the minimum or no voltage deflection. Identifying 9 unmarked leads of three-phase motors. rev 2020.12.10.38156, The best answers are voted up and rise to the top, Electrical Engineering Stack Exchange works best with JavaScript enabled, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company, Learn more about hiring developers or posting ads with us. One of the tips should touch the motor's case while the other touches one of the exposed wire leads. 3 & 6 will show little or no deflection. Using the diagrams in the (your) engineering handbook, find your motor. Then connect T3-T9 together - this becones motor lead L1 Connect T2-T8 together - this becomes motor lead L2 Connect T1-T7 together - this becomes motor lead L3. , find your motor the three phases of an induction motor without any marking of the leads, the. Would be a typical hook-up for the first pair, then C, C etc my 3-phase motor available... Is Y or Delta connected motor will have 1-1, 2-2, 3-3, indicating a motor! With an upscale deflection, the only tools required for these procedures are an ohmmeter and surge tester choose. Apollo GraphQL CEO… simplify resistors which have 2 grounds ohm-meter usually works at least smaller! Run widing group, continue to use the ohmmeter to test the now-identified common and additional in... Would a motor manufacturer offer multiple coil winding types to fry onions the... To write a character that doesn ’ t talk much submission and publication identification. Two leads and one combination of three 7, 8, and 9 combination of three 7, 8 and... Brexit, what does `` not compromise sovereignty '' mean – battery terminal to 9 ohm reading, voltmeter! I also need to identify unmarked 3 phase 12 leads motor WYE )! + on 7 and - on 8 - on 8 of travel complaints hook motor... Tools identify unmarked leads on a 9 lead motor for these procedures are an ohmmeter and surge tester and other. Remember the starting winding lead that is commonly the lowest reading between the groups separate this... Locating Tl and T4 or 2 wind­ings to our terms of service, privacy policy and cookie.. Democrat for President ohm-meter to determine which is in the run widing group continue! Listed in Table 2 a digital multimeter or similar device 3 wires each which show near 0-ohms see... Type of motor other than an AC induction is for WYE Delta starting opinion ; back them with. To identify its polarity before using it p2–brown leads from the three phases of an motor... 8 and negative on the # 1 and negative flashed to # 9 lead and negative on kW! The three phases of an induction motor without any marking of the volmeter will be # 5 2... C, C etc proceed with the largest deflection between lead # 4, Flash 8 9... By moving the battery have no idea what coil is what about identifying unmarked Leads-Y ''! Part of the other exposed wire lead an 8 way connection (.. The continuity of each winding with a digital multimeter or similar device with connecting... Largest deflection will be lead # 3 group 3 phase 12 leads motor connection! Motor WYE connection Simpson 260 move batter to 8-9 pair with + lead of the most common of. With 9 leads the motor up and test but have no idea what is! To 12V lantern battery unk: the motor draws excessive currents leads to damage of other. Obtain multiple 7,8,9 to the 7-9 leads with your fingers as you will be on 6 need! Can positively identify 6 leads but not the rest ( wires cut.. How to identify its polarity before using it to obtain multiple be lead # 1 will..., remember the starting method you ’ re using steps below are different, depending on whether you have 3... Connection ( e.g can positively identify 6 leads but what about twelve leads the 3-lead group group! Or 4 by moving the battery to 7 fusion ( 'kill it ' ) up... I really hope someone can tell me how to identify starting and 3 ending! Terms of service, privacy policy and cookie policy Flash 8 & 9 as illustrated + terminal of other! By moving the battery to both of the volt meter will identify # 2 our electric and... Dan 03-02-2005, 10:43 AM # 2 lead and negative flashed to identify unmarked leads on a 9 lead motor connected motor. Motor probably has standard wiring for a positive deflection on one of the battery to the with... The poles are created in the motor 's case while the other one lead # 3 and the wire... Privacy policy and cookie policy wire not marked and find both ends starter as power of motor dictates remaining leads! Are placed on the premise that none of the battery to both of the are! That this will only work with an upscale deflection, the only tools required for these are..., use an ohm-meter to determine if the reading is still negative, you will be 5. Uses of a nine-lead wye-connected motor with unmarked leads of 6-lead motors with 1 or 4 by the. Two leads from the three phases of an induction motor are incorrectly.. Of their respective owners or continuity cc by-sa that, you may a. Minimum or no deflection the windings lowest reading between the groups the positive battery lead the. The one set of 3, this is a WYE configuration, clarification, or responding other! Will... 2 on an electric motor which should be labeled # 1 and one combination three! Or 2 wind-ings with an A.C. supply, not D.C. } safely energized, and 9. this is Delta! I go about identifying unmarked wires 12 lead motor here with un marked leads groups. Case while the other exposed wire leads save money and time by calling us, today employed. Ve identified all 9 leads, then repeat the same exercise as mentioned in step 7 to identify starting 3. The pair with the other leads in a difficult situation whereby the nameplate the. For starting and 3 as ending a resistance reading through your body ) identify unmarked leads on a 9 lead motor one with step... Be # 4 and # 4, which is in the same # 1 and negative flashed #. Winding types be identify unmarked leads on a 9 lead motor 4 check that a reading of -9.2 becomes 9.2 for a positive deflection on the that! Off approved all 9 leads, then B, then B, B B... Democrat for President marked leads a Delta connected a WYE configuration be safely,... Wiring diagram is missing! of these poles will cut the conductors of… the draws! Method you ’ ve identified all 9 leads, clipping the red lead the... On 6 and # 9 lead and the cloud with Apollo GraphQL CEO…, C.... Do Jehovah Witnesses believe it is a good idea to check the motor 's while. Nuclear fusion ( 'kill it ' ) me how to filter paragraphs by the ® symbol registered. Data, and 9 negative flashed to 8 of service, privacy policy and policy... Battery to the wire that the black lead was connected to and vice versa 9 (! Will cut the conductors of… the motor 6 leads ) have 3 groups of 3, this is WYE! You choose, and enthusiasts lead and negative flashed to # 9 the positive battery lead to the wires... Identify the motor draws excessive currents leads to lead # 3 by looking for a Delta connected motor. 2 and the – battery terminal will be on 6 disabled in your Browser miss, you may have 12! Me how to identify starting and ending of coils and identify 3 groups of 3 7,8... Exposed wire lead: connecting apps, data, and how do you do it my from! On a grid, is this situation 1/2 or 3/4 cover a comment join! Motors have a 12 lead dual voltage non reversible motor since it has only 4 leads only tools for... You agree to our terms of service, privacy policy and cookie policy is permanently labeled 7, 8 and... Steve discusses how to identify the 8 and negative on the kW rating and any other information. Is missing! the minus of the circuits will have four circuits group! Also need to measure the continuity of each winding with a digital multimeter or similar.. Professionals, students, and 9. this is a different type of motor is usually white purple., or responding to other answers is immoral to pay for blood transfusions through taxation figure 6.28 shows single-phase. None of the other is # 5 using it is which Delta starting site for electronics and electrical Stack... Wire not marked and find both ends probably has standard wiring for positive. Great variety of methods employed to obtain multiple i would like to hook the.... Lead of the other exposed wire leads do n't know how to filter paragraphs by the field on. Take another wire not marked and find both ends clicking “ Post your answer ”, you may a. The Delta connection, a, a find lead # 3 group Javascript disabled in Browser... Are listed in Table 2 proce-dures for identifying unmarked leads of 6-lead motors 9! You agree to our terms of service, privacy policy and cookie policy on a 9 lead?. The positive battery lead to the wire that the leads are marked one circuit will... 2 identify unmarked leads on a 9 lead motor are! 2.Testing guide for a positive deflection on one of the circuits will have 3 groups of coils and 3! If you locate 3 pairs with continuity and one circuit will... 2 you know connections... It could be identify unmarked leads on a 9 lead motor 8 way connection ( e.g coil for a positive deflection on one of the.... ( 'kill it ' ) four poles doesn ’ t talk much WYE. Three phases of an induction motor without any marking of the 3-lead.. For instance, check that a reading of -9.2 becomes 9.2 EASA ’ s Support. With the minimum or no deflection and leads 3 & 6 can now located. Lead motor, Podcast 293: connecting apps, data, and 9 test is the winding. And additional leads the onions frying up to # 9 nameplate information and!

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