motor

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  1. A

    Megger 3 phase motor with thermistor

    Hi guys Do you carry out an insulation resistance test on a 3 phase motor with thermistor protection as you would without thermistor protection or does extra caution or process need carrying out differently? First time coming across one Thanks
  2. P

    240V SP Ind Fan Motor wiring help

    Hi guys, struggling with a problem wondered if anyone can help. Had 2 A/C units failed on me, spare parts not available til end of August... :-( The faults were caused by the fan units which vapourised tracks on the PCB, great design , not. I can repair the PCBs but the fans are dual fans...
  3. G

    Dc tacho fail dc motor

    Sirs, Am facing problem in dc drive that is dc tacho fault . I have checked tacho and found values of armature resistance are same in all segments in commutator. But motor speed not in control. It is automatically varying and suddenly stopped. Is there any bypass method available for tacho...
  4. robertl

    3 phase 2 speed motor from single phase

    Hello everyone I have just bought a new lathe, (used) its on its way to me from other end of the country now. I have only just realised i may have an issue. The machine is 3 phase and i was intending to go down the VFD route but because its a dual speed motor im not sure i can. See attached...
  5. C

    Single Phase AC MOTOR stuck

    I am trying to fix a single phase ac motor but need some help. When powered on and put off load, motor humms but doesnt rotate, its sort of magnetically locked because even trying to rotate by hand it very hard to turn (motor was removed from housing and therefore I have stator and rotor...
  6. C

    Electric Motor Dismantle

    Hi Guys I want to replace the bearings in my washing machine motor but I'm having difficulty in getting the screws / tie rods out. Does anyone know what they are actually called and how to get them out without ruining them. One of them is down a 30mm hole so not exactly easy to get at. I’ve...
  7. S

    Compressor 3hp motor DOL starter question

    Hi, I kinda think I know the answer to this but will ask opinion anyway. I am fitting a new compressor pump and motor to my receiver and have bought; twin cylinder pump; 3hp motor (2.2kw) Although, the motor looks like this So, I upgraded the ring main that the compressor will use in my...
  8. 3

    Rear Wiper motor relay wiring

    My rear wiper motor is connected via a Lucas SRB501 5pin relay from the loom to the motor. I have no reference for wiring. The motor has power as it parked, but won't operate from its brand new switch. I just wanted to double check my wiring, before ordering a new relay, if it is needed. So far...
  9. HVManiac

    How much current does car starter motor draw without any load?

    Hello everyone, Does anyone have any information on how much current does a car starter motor draw at no load? The motor specs: Power max: 1.4kW Voltage: 12VDC Armature resistance: 0.7 ohm Brand: Bosch Model No.: 1740374 The starter was removed from the engine when tested. A little history...
  10. Alexander

    Is it possible to : motorcycle EV conversion

    Is it possible, if and why not iff so, To fit an EV motor and controller directly to the stator output of a 125cc motorcycle engine, (pre regulator) Using a fixed throttle set up to increase revs to the required output and to bring it down to the engines normal idle revs for when stationary...
  11. cliffed

    3p motor connection

    How would you connect this delta or star it’s got a 3p 400v supply, Nameplate a bit confusing,I think.
  12. Dilwyn

    Can. I run 3 phase motor off single phase 4 wiresABC

    Can I run a 3 phase motor. Off single. Phase 3 Black wires ABC 1 earth wire. Any info. Would be great thank you.
  13. S

    UK 12v dc motor forward reverse off switch

    Hi all, had a job with a swimming pool bubble cover that rolls onto a spool with a small 12v dc motor, it had a reverse key switch to roll and unroll the cover which has had a load of water in and got corroded and stopped working. Thought I'd taken a picture of the switch when there but I havnt...
    • suffolkspark
    • Thread
    • 12v dc motor forward motor off reverse switch
    • Replies: 7
    • Forum: UK Electrical Forum
  14. D

    AC to DC motor thyristors speed and direction control

    So i have been given this question: You have also been asked to produce a circuit design that can control the speed and direction of a conveyor with a AC to DC motor thyristor system. What are the the operational features (how it works with speed and direction circuit diagram/s) I am really...
  15. D

    Transistor H-bridge system for a conveyor motor with speed control property's

    Hey, I've been asked a question 'what are operational systems on Transistor H-bridge system for a conveyor motor with speed control property's'. I know that system I've put below would work for a lower voltage application, I just cant seem to find any information on high voltage applications. I...
  16. Joe9009

    Where to connect power cord to induction single phase motor 240v

    (I would want it to run clockwise) Any guidance would be much appreciated.
    • Joe9009
    • Thread
    • 240v ausie elec connect cord induction motor phase power single single phase where
    • Replies: 22
    • Forum: Australia
  17. UKMeterman

    A good video about a 1920's lift including the slip ring motor

    The power guys might like View: https://www.youtube.com/watch?v=6DlI0yOYHH0
  18. J

    Motor starter A1 and A2 coil contacts

    Does it matter which part of the coil power is supplied? (can you reverse polarity)? For example can I put the “hot” current carrying conductor on terminal A2 and leave with a grounded conductor from terminal A1 (assuming power supplieD is 120v.) (what about 24V?) Is there a specific type of...
  19. N

    how to apply power to sunroof motor?

    Hi there, I have a 1992 Mercedes and what I'm trying to do is take my cordless drill (12v, 18v, whatever) and apply power to the sunroof directly on junkyard cars. I want to run the roof forward and back to remove parts from the various area of the sunroof system. The connector on the motor...
  20. R

    Prodis Dishwasher PRO30450 Timer Motor

    Prodis Dishwasher PRO30450 Timer Motor. Commercial dishwasher. I know that's terribly specific but I can't find anything anywhere on the net for this machine. Timer motor is defective. Keeps jamming mid cycle because gears are worn. So it only needs a motor. But I can't find either the motor or...
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