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motor

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  1. P

    elektra bekum planer thicknesser motor problems

    hi, everyone. i need some helpful advice, my planer thicknesser has stopped working. i noticed that one of the capacitors had sort of melted so got the information off the side and ordered a new one. i bought a slightly higher replacement as i know that you should never use a lower spec one...
  2. N

    Two speed wiper motor

    I have a 1960 Triumph TR3a which has one-speed wipers that just move the water around. I decided to put in two-speed wipers using the Lucas motor from an original Mini. The connections are power, low-speed, high-speed and park. My question is do I need to earth both low-speed and high- speed to...
  3. H

    Why is a PMDC motor getting hard, when on load after 10 years of service?

    Why is a PMDC motor getting hard, when on load after 10 years of service?
  4. R

    Motor ID & VFD Selection

    I bought a fairly antique 20" Monarch bandsaw. It came with a gigantic (~16" diameter) 5HP electric motor. I'm not sure a bandsaw of this size needs this much motor, but since I have it, I'll try to use it. The motor appears to be 5HP 3Phase, and probably 1730RPM. It is old enough that I can't...
  5. midsomerdave

    Electric motor wiring

    I have a single phase 230V motor from an old concrete mixer. There's one of each black, white, red & green wires coming from inside. How is this connected please?
  6. C

    Lights 15 amp circuit dims when hot tub motor kicks, 60amp circuit?

    I have an extra 200 amp panel in aux garage and only exterior lights and hot tub are on it right now. Everything my hot tub motor kicks on, the 15amp light circuit with lights dims for a second. The tub is on a 60amp circuit. How can this happen? I thought the purpose of separate circuits is...
  7. The apprentice

    Motor controls

    Could anyone show me a forward revers and stop motor wiring diagram thanks in advance just trying to learn a bit
  8. R

    Can a difference in phase voltages cause a motor to fail?

    Here is the background: A new Grundfos 3 phase sump pump was installed in a bore hole to pump groundwater to a holding tank. After 6 weeks the motor failed, the installer measured the voltage of the 3 phases which at the time were P1-237v P2-250v P3-233v and suggested this was the likely cause...
  9. M

    Can a 3 phase motor that is running on single phase have 2 directions?

    I am needing to know if this wiring diagram is showing a few things: 1: Does this show a 3 phase to single phase conversion? 2: Does this show that the motor can turn in 2 directions with the same internal wiring if you toggle the SPDT switch?
  10. S

    Motor rating plate help 3phase

    Evening all, got this rating plate on a portable feed augar motor, it's currently wired in some seriously past it SY cable, the farmer wants to renew it , I've suggested H07RNF as best choice, but I'm not clued up on reading motor plates to size it, I see 29 on the plate, and assume it to be...
  11. P

    Replacement shunt-wound motor

    We have some shunt-wound DC motors that are used are servos (so operate over a big speed range and in all 4 quadrants, motor and generator both directions) and one of them (0.25kW) has gone "lumpy". My suspicion is the armatures has some open winding(s) so the speed/voltage profile changes as it...
  12. Z

    Need help building specific Motor Control Circuit

    Here is the circuit parameters I am trying to build, I just can't seem to figure it out. When the start button is pressed, motor 1 turns on Motor 2 will start 5 seconds after M1 has started. Motor 3 will start 6 seconds after M2 has started. When the stop button is pressed, M3 stops...
  13. J

    Microlift motor

    Hi I've got a microlift motor for a roller shutter and I need to know how to wire it. Any help thanks
  14. Doomed

    Can I can't I - motor wiring

    Just been sent this picture my a regular client that plays with cars: He says the bloke he got it from had it working in his domestic large garage which implies single phase and the plate does say 14A at 230V, but all the info I can find online is in french and seems to say its 3 phase only. My...
  15. T

    UK Motor breaker size/type

    Hello, I have a 7.5kw 3 phase motor 400/690v 50hz. Can anyone advise what size and type mcb is needed for this please? It’s currently being fed via a c16 which is tripping now and then. many Thanks
  16. P

    What do I need to know to calculate size of single phase motor?

    About 20 years ago I bought an old table saw from a local school. I only had single phase at the time so I changed the motor and switchgear as it was 450V. I'm thinking of buying a 3 phase 50s bandsaw and have the same problem, but I can't remember how to work out the size of the replacement...
  17. R

    Starter motor not cranking

    Renault clio mk2 not cranking over. Battery reading good voltage. Changed starter motor for new one but same issue. Bench tested old starter and working fine. Noted that when I place jumer cable on negative battery terminal and then to engine to ground it starts not problem. I've taken off the...
  18. N

    Electrical motor power cable

    Hi there, This is my first time on this forum. I hope I am in the right place because I need some knowledge that I don't have. But first, I'm Niels, I'm 18 years old and I'm from the Netherlands. Now here is my problem: I've got an old electromotor that I want to fix. The first step in that...
  19. R

    Washing Machine Motor Tacho Testing

    Hello all Just looking at a Samsung EcoBubble washing machine that's fairly new and been an issue for some time apparently. It's in the sister-in-law's garage. She says she's had the Samsung guy out to it 3 times under warranty and it still doesn't work. She has no idea what was done to it...
  20. J

    Motor earth

    I’ve recently seen a motor wired directly from the local isolator to the motor terminal box in 3 core 1.5mm cable. The gland has been made off into a threaded hole in the motor terminal box and at the isolator end directly connected to the incoming swa from the MCC by means using a flylead. My...

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