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motor

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  1. F

    Motor wiring help - single phase reversing

    I posted a month ago regarding a single phase motor + panel I have been given to try and sort following water damage to the panel. The assembly is a single phase 110v brick hoisting motor and so needs wiring to allow reversing. There is nothing to work back from as it was all disconnected but...
  2. _q12x_

    Stepping Motor Angle Rotation using Logic IC's

    This is more a challenge to myself and why not for some of you as well. I will try to make it myself alone but... it will be easier and faster with some more experienced help from you guys. As the title says, with logic IC's. I could/should make it with an arduino or my favorite PIC12F508...
  3. H

    3 phase motor cable size

    Hi all, I’ve been asked to run a cable for a 3 phase DC motor. Not having much experience with motors would you work out cable sizing the same? In the picture attached are the details I have received. Any help would be great 
  4. S

    Powering single phase motor from 3 phases

    Hi, this might be an easy question, but i need to power a single phase motor situated about 300 meters away from my MCC. Do I just run 3 phases 415VAC cable to the motor in the field and just connect one live phase and the neutral to get the 240VAC? if that's the case then what do I need to do...
  5. U

    Star delta Pump motor - Doesn't work clockwise but Works anticlockwise

    Hi I'm having a problem with a 20 HP pump motor from a hydraulic press to try molds. When we energized the machine, it starts with star correctly but when it changes to delta, pump motor stops. The breaker doesn't strip and fuses were ok. Video (clockwise rotation)...
  6. F

    Single phase motor reversing with brake and centrifugal switch

    Hi guys, Been given a motor and associated control gear within a panel that has been water damaged. This motor has 3 windings U1/U2, V1/V2 and Z1/Z2, 1 pair of wires for the brake and 1 for cut-out I believe. In the process of wiring a new panel up for it and it know its a long shot but can...
  7. S

    ac single phase motor won't rotate even by hand

    hello!! hope anybody can help me. I have an AC single phase 220v 1.5HP motor that won't rotate when plugged in even when I try to do it by hand, it is kind of magnetically locked, and just hums. when unplugged, it rotates easily. I tested it with a new capacitor that I'm 100% sure is OK (I took...
  8. Poolworx

    Electric ac induction motor 50hz to 60hz?

    Can a single phase single speed 1.5hp induction motor run on both 50 and 60 hz 115 volts
  9. Poolworx

    Is this how a variable speed motor works

    Just wondering if my drawing is correct for speed control of a variable speed motor and what the actual switch is card thanks
  10. mikeatron

    single phase motor reversing itself

    evening all ive got a single phase AC fan motor running normally however occasionally on start up it starts in reverse. i have 4 no fans, and this is happening to 2 occasionally. now these are in a fresh air chambers and i was starting to think that the airs blowing over the fans causing reverse...
  11. B

    Scooter Dc motor windings

    I have a 24 volt 350 watt scooter motor that need rewound. The specs say 3000 rpm no load. Does anyone know how many turns are on each coil?
  12. Lucien Nunes

    Motor cable - style question

    I'm about to replace the cable from a starter to an existing 2hp 3-phase 3-wire motor adjacent. The motor is rigidly bolted to a bed and has a direct shaft coupling, i.e. it is not on slide rails. Normally, I would use stranded singles in steel conduit with a flexible conduit link to the motor...
  13. Rockingit

    Motor maths - this makes no sense

    I've got a large USA artist music tour starting soon across Europe so we're having to sort out lots of reducer transformers etc, no big deal. But this has me stumped.... A USA manufacturer of a moving platform is requesting a 208v transformer @ 30A for the platform, but having doubled checked...
  14. jolb72

    black screen when fridge motor or heater starts

    Hi there I’m looking for some help as I have what seems to be an electrical issue. It seems to relate to my computer PC, the fridge freezer in my kitchen and my electrical heater. My computer PC tower is connected to my smart TV so I can use my TV as a PC monitor as well as a TV. The problem...
  15. i=p/u

    Single phase motor humming and heating up.

    Hi, morning EF. I was looking at a single phase motor yesterday attached to hydraulic pump for cardboard bailing machine that seems to be temerpemental with stop and starting and making humming sound. I checked the contactor was working first and voltage was going to motor, I clamped the cable...
  16. C

    How to wire an instant reversing motor

    I need some advice on how to wire this motor please! Its for a large clothing conveyor . 120 volt power . Its an instant reversing motor, controlling the direction with a dpdt toggle switch and a separate forward and reverse contactor. Thanks for any advice!
  17. M-B-Electrical-Services

    Recommended reading for motor control circuits

    Hi all. Just a quick one really. Some of my work has started to creep into the industrial sector and, as such, I'll need to do a bit of research in order for me to be able to fulfil my client's needs. The specific sector is Fire Sprinkler Systems so it'll be single/poly phase compressors...
  18. P

    What purpose is a capacitor in a motor circuit?

    So basically, if I wanted to increase the voltage across say a motor winding I would need to add a capacitor in parallel?
  19. bigspark17

    Ramp up down switch single phase motor

    Weired one. Looking for info or past experiences. Called to a garage very old ramp 40+ yrs old not working. Very old switcc looks like its burnt out, so before i take on finding a replacement i wanted to make sure motor ok. So bypassed up down switch and turned on isolator. (Single phase motor)...
  20. S

    Motor options for electric tug

    Hi Everyone I'm sorry if this is not in the right area. I am building my own small house, I need some help moving materials around the site, I like the electric tug type design in the pic attached. I am able to design and fabricate my own custom version. I want a off the shelf low torque...

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