1. dlt27

    Motor starter help.

    Hi all, thanks again for any input. I have been asked to look at this starter as motor starts ok, but when switches over to run motor stops and starter just hums. First of all like I’ve said in previous posts I haven’t had a lot of experience with motors/ starters etc Am I right in thinking this...
  2. happysteve

    Brushless motor battery drills - unsatisfactory speed control, or just this model?

    Have had a Makita BHP458 (non-brushless) hammer drill for years, I love it, it's pretty indestructable and the torque's great, but the chuck's finally going. They seem to be moving to brushless motors now (for most of their combi drills). I've only recently bought a battery SDS drill (after 2...
  3. H

    Canada Can i use a Reed switch to detect if my motor is spinning?

    Hey Everyone. Im designing a product that has an analog electrical system in which i have multiple fans. im thinking of using a Reed switch to let me know if my Fans are working. My thought was that when a motor is spinning, it is creating a magnetic field that would close my reed switch. if...
  4. T

    Help me with inverter vfd to 3 phase motor

    Ac power supply 440V Inverter - Input 380-480V 50/60hz 11.2A Output 0-480V 8.5A 6.8kva 3.7Kw 3 phase motor- 2.2kW 50Hz Should i use delta or star connection? newguytoelectricity
  5. M

    Single phase induction motor schematic

    Hello, I've found an old motor originally designed for operating jealousies. Could you help me read and better understand the following schematic? As far as I understand, it is a single phase induction motor, there is 47 uF capacitor connected to it in order to start. There are 3 contacts...
  6. J

    Which controller for this brushless motor

    I am starting to get into brushless motors but am still having a hard time understanding all of the terms. I am reading books on electric motors and wiring but still need some additional clarification. I am purchasing this brushless motor: DYS D3548 1100KV Brushless Motor Outrunner...
  7. M

    Setting Motor Overload

    Hi, How do you set a motor overload? I have read that you set it at the FLA of the motor but also that you should consider service factor. Which is correct? Thanks.
  8. M

    USA Need help with Reversible Motor

    Hi, I am building a motorized easel for large format paintings that do not exceed 100 lbs; average probably more like 50 lbs max. My rough 3D diagram does not show the motor or pullies, etc, but I hope you can get an idea of where these things would go. Motor mounts on the bottom. Cables will...
  9. N

    Siemens RCCB trips even while inductive motor is off

    Good day everyone This is my first thread here, and I'm writing because I have a problem which I'm not sure how to solve. Since its company money, I just want to make sure that the conclusion to the problem is correct. We have an autoclave that works at 121 celsius to sterilize with steam. Its...
  10. J

    Commercial How to wire motor plug

    Hi everyone I purchased a bench polisher which looks to have come from China. It says its 220v single phase and should work fine in the UK. The power cable has 4 wires in it so I'm confused how to wire a standard UK plug. I have attached a photo of the cable. Any advice would be much appreciated.
  11. K

    Motor connection to 220v

    I have a two value capacitor motor from china photos will includes i believe there country runs 220 standard single phase and I am in USA Sn: it did spark accidently when i hit black wire on another wire and kinda started Thank you
  12. polo1

    Motor protection

    Peeps, I have been asked to run a supply for a single phase, 3.2a extract fan (systemair AW500E4). Is it a requirement, recommended or just good practice to include thermal overload protection in such a situation? Thanks.
  13. Pete999

    Pete's Videos Motor maniacs everywhere

  14. H

    two motor star delta

    hi guys i have an issue with one of two motor running star delta for a concrete mixer one motor is pulling out more current than the other one almost 10A difference (1st=39 , 2nd=48) knowing that the 2nd is rewinding both motor are same company
  15. V

    Need help identifying this starter motor

    Numbers on the body read: 270300, probably a 12v but could be 6. any information would be appreciated.
  16. T

    Domestic DIY Stepper motor output reducer

    Hi, Minor time DIYer mostly doing little fun projects, so my skill level is a bit limited. well, I also have a 3d printer. Now, I know all electrical motors generate AC power when freely spinning. Problem is, when there is a need to manually move the head or the build plate, this, of course...
  17. Lucien Nunes

    What kind of motor is this?

    Interesting old machine still in use. I've talked about similar motors before but not this type AFAIK. To the trained eye, the shape of this one is a giveaway, from which you can identify its maker and the technology it uses, and probably say something about the available electrical supply. In...
  18. G

    Wiring a fiat starter motor

    Hi all Newby here in dire need of advice I have managed to lose the wiring order on my fiat fiorino van starter motor I have 3 wires 1 Goes to alternator 1 goes to battery and 1 goes to either ECU or ignition Battery has 12.97 volts (its Fine) The battery definitely connects to the empty...
  19. J

    Domestic New Lathe Motor - 1 Phase - DOL or 3 Phase - VFD?

    Hi All, A mate of mine recently acquired a rather nice wood turning lathe they'd like to get running out in their workshop. However he admits his workshop is rather old and while he's not bothered, I'm concerned about drawing too much current (I'm trying to convince him to get the wiring...
  20. R

    Testing an Old motor for restoration ?

    I have acquired an old British Thompson Houston 1/3 HP BKS 2410 single phase motor on a pillar drill, it needs new bearings before I can test run it, my question is can I use a multi meter to check the windings and find out if its a go-er at this stage and worth restoring ? If so how ?
  21. J

    Why do soft starts tell you to set the overload at (delta FLC/1.73)

    Hi I have a question on soft starts. Why do soft starts have motor FLC delta /1.73. I’m confused as I understand star delta it is set at 58% of the full load current as the overload is in line with the windings. Thanks for your help in advance.
  22. gunsmokejp

    Electric Scooter Parts. 350W motor 36v Battery

    Hello i have for sale the parts of this scooter. Everything is working fine is just the holding mechanism is a bit wiggly(missing a screw) and the speed indicator is not working. The cable from the battery to controller has been worn out so i think this might be the issue. The scooter is one...
  23. J

    Using an alternator to run a motor

    Hello there.- I have a 550W 3ph electric motor / pump and a VFD which is a 220VAC input to 220VDC which is connected to my motor, so my motor can start at a lower speed until reach 1,390 rpm, also I have a 12VDC to 230VAC pure sine 1000W inverter, my question is: If I use a car alternator that...
  24. T

    Earthing of Three phase Motor

    Hi recently was on a job carrying out EX inspections on three phase motor at a pharmaceutical plant. The supply cable going to the motors does not have a core for the earth they have used the braid/SWA of the cable for earthing. So entering the three phase motor with EXe cable glands terminating...
  25. S

    Domestic Single Phase Motor Reversing Direction

    Good evening you sparky lot I'm after some wiring advice on an old single phase motor for use on a lathe. Please see the attached pics. The tails have been removed for clarity. Live was connected to terminal B, neutral to AZ. Is it possible to reverse the direction of this type of motor...
  26. H

    Electric motor problems on dust extract

    Hi all, hope i can get a bit of help here. I have a dust extract in my shed which i use when i am turning. This morning i went to switch it on and it blew the 13A fuse, i replaced it hoping the fuse was at fault which it wasn't, well i had to try. The motor plate 230v, 13amp, 2 pole, single...
  27. Automation ATO

    I don't quite understand the brushless motor parameters

    ITEM Qunt SERVO MOTOR 3 PHASE BRUSHLESS 2 IFT 6034-4AK 71 – 3AA1 EN 60034,NO YF P 921 6207 01 003 H CE Mo 1.65/2.0NM IO= 2.15/2.6A 60/100K MN= 1.4NM ŋN = 6000/MINT UIN-300 VY IM B5 IP-65 TH...
  28. M

    Melted motor terminal post?

    Customer has this 110KW (converted to 55KW) motor powered via a generator. They had a problem with the generator cutting out on startup showing overload fault. Having investigated this issue, along with the motor overload having been bypassed!! (will be rectifying this!) when I took the...
  29. Savdar1810

    3P VFD 1.5 KW motor conveyor

    Question for someone... I have a 3P 1.5kw motor gearbox on a 5meter conveyor driven by a 3.7kw omron VFD, Frequency is set at 70/80hz (required for needed speed on this existing drive train) and voltage going out to motor is something crazy like 470v between line and earth, Its way to high I'm...
  30. Spaniel

    Commercial 3 phase motor control conundrum.

    Hello, a mechanic friend asked me to check his hydraulic vehicle lift controls as it had failed. When I arrived the lift started working again (of course) but with some contactor chattering upon initial start for approx 5 seconds. He was happy it was working again and wanted to get home, I had...
  31. G

    Motor control for chicken house

    Hi All, Due to unforseen circumstances I have inherited a chicken farmer as a customer. He has just taken on another free range egg unit and wishes to install motorised 'pop holes' so that he can remotely open and close the doors for the chickens via a GSM module.(there are also push buttons in...
  32. B

    Cable selection on boat for 1000W motor

    Hi all, I was asked in the office last night what size cable would be required for a 12V 1000W windlass with a cable length of 14m. I know how to calculate but where do you find the tables for 12V volt drop etc?
  33. Lucien Nunes

    Motor starter / static phase converter repair

    We've had a few threads about phase converters recently. Here's one I repaired on Monday. It's a little box that takes in single-phase 230V and feeds a 3-phase motor wired for 230V delta. It includes a manual 'soft' starter and overload relay. Unlike the units in the other threads, this one...
  34. V

    Need help identifying this starter motor

    Not sure what this fits, its an old thing possibly 1930s??. its a lucas and the number on the body is 270300, it has 10 teeth on the pinion. its a 12v. would appreciate any help given.
  35. Spark40

    Another induction motor question

    which factors might affect the slip and what losses may be incurred by the motor ? Cannot find much about this, i know that the load indirectly affects slip due to the rotor speed changing, more load is more slip Any assistance is appreciated, thank you If any websites is found in referance...
  36. Spark40

    Induction motor question

    what is the affect on starting current and torque of changing the electrical supply frequency? I can find out that the speed changes etc from this website: Changing an Induction Motor's Power Supply Frequency Between 50 and 60Hz -...
  37. G

    Domestic Shaded-Pole Induction Motor

    Hey guys! First post here I just came across a broken fan that uses this can of motor to spin the blade, I already tested everything else for faults and it is the motor that is not running. My question is this, given the simplest type of AC motor, what are the common causes of failure?
  38. Chinese Dave

    Protection to be used on a 5KW motor???

    Hi, I'm Dave and I was wandering if I could have help with something. If I were to wire a 5KW motor what means of protection should be incorporated into the inverter for compliance with BS 7671? Thanks! :)
  39. M

    Ford Transit petrol/lpg No starter motor no fuel pump no spark ?

    I have a 2003 ford transit petrol that has just had a replacement engine fitted The van was started and ran for a few miles without any problems I stopped the van and went to get a coffee when i returned to the van it did not want to start, thinking it was just fuel and a flat battery i went...
  40. R

    Measuring current draw by AC motor.

    Hello guys. This isn't a job, just so that you know. Just exploring. I have a couple of AC motors and I am playing with them. One of the things I want to do is measure the current draw. So I attach them to a power source and switch it on and off they go doing their thing. No problem there...
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