motor

  1. Sajith

    soft starter for 3 phase motor

    Hi All, I have recently purchased a motor soft starter from aliexpress for a 3 phase motor Before connecting load I measured the input and output voltages. Input voltages between each phase is 400V. However when I measure the output, voltages (after timer delay) is different. Output...
  2. B

    Wiring an off on switch into a Contactor for electric motor?

    I have a sawbench motor that needs an on/emergency off switch fitted, have the hylec on/off switch and a contractor 240V coil with NC contacts. Any advice on how to wire it up? Please see attached photos. Can’t seem to get my head around it and failing to make it work on the on off buttons...
  3. V

    Small blower motor spins back and forth

    Hello, novice diyer here, but trying to learn more about electrical. I have done some basic wiring but that's about it. I have one of those outdoor blow up Santa ornaments, 8' tall, I tried putting it up today and the small fan just started spinning back and forth about every 3/4 of a second...
  4. X

    UK 3 Phase Motor Star/ Delta phase conversion

    Hi Guys, We have a CNC router which uses single phase for the spindle, stepper motors and control box. This is all wired in and working correctly. However, the CNC also features a vacuum bed, powered by a seperate 3 phase motor. We have no 3 phase in our shop, the motor is labeled as 4kW...
  5. A

    USA please help me with my battery problem

    hello guys i have a (3-6v dc motor), (DC Motor PWM Speed Controller 3V 6V 12V 24V 35V), (3.7v 1200mah rechargeable battery) and a (Charging / discharging circuit MH-CD42 for batteries with 5V output). Everything looks to be working fine it spins and everything but when i put force on the motors...
  6. gazdkw82

    Help testing small motor

    Friend of mines dryer machine has stopped working, 2 days out of warranty. I am trying to help theme out as money is tight for them however, I'm a little unsure my diagnosis is correct and I don't want them spending unnecessarily on replacement parts. The dryer is a Candy machine and has a...
  7. T

    Possible?: Find a compatible rotor for Fein Asb 658-1 impact wrench?

    Hello. Is it possible to find a compatible rotor for an electric motor based on the dimensions of the original rotor? The manufacturer Fein says that the motor of the impact wrench Asb 658-1 is an in-house development. Is it easy to test the rotor for defects? For now, I have measured 8...
  8. L

    Hotpoint range oven making funny sound - fan motor?

    Hi All, Thank you for your previous advice - it resulted in us replacing our precious Smeg range with a Hotpoint; however we now have a new issue that I was hoping you might be able to advise on: The oven works nicely and the heat seems good etc. But it makes a pulsing noise when you're using...
  9. P

    12v motor causing noise in 240v system

    Hi - On our small vessel we have a 12v failry powerful motor to run the autopilot, where the power is supplied by the boat's battery bank. On an 'independant' system we have 240v that is supplied via an inverter, but the power originates from the same battery bank as the 12v system. The...
  10. davehaynes1

    starter motor help please

    Good evening all Ive got an old truck 1990 that has always had intermittent starting issues whilst ive owned it.. As far as i am aware the battery is in good working condition. a quick run down of the problem. I turn the key to IGN and let the glows warm up, when the glow light goes out i...
  11. E

    Washing motor - bench test

    My beko will not run, it attempts to move in both directions with a belt or not fitted also shows no faults in checking with a meter across its tacho, stator or field as it will not run. The brushes are a good length of 30/40mm when removed. Need to bench test to prove if the motor is at fault...
  12. M

    How to calculate the current used by a BLDC motor under load?

    I'm working on a robotics project and currently we are designing a battery. This battery is dedicated to the motor driver and two BLDC motors. I want to know how much current the battery will draw if we drive the robot at a certain speed. More specifically, how to calculate the speed of a BLDC...
  13. Mr305worldwide

    Need help identifying parts on a DC motor

    Hi all I have a small DC motor that I pulled off from an ABS car module and need help identifying some parts in order to hopefully rebuild it. 1. Why does this motor have 3 carbon brushes instead two? 2. Why is there a large spring on the base? 3. Will replacing the carbon brushes with amazon...
  14. A

    How to do a proper insulation test on an electric motor

    I want to check the insulation of the 3-phase 400VAC asynchronous squirrel cage motor. Motor's stator windings are connected in delta. I've read in some textbooks it is necessary to open motor's junction box and disconnect terminals and remove jumper bars (which are used to establish delta or...
  15. T

    AC Single Phase Motor - Expected Amp Draw

    Hi Forum Members I have a 4 pole single phase 240VAC 315 watt motor from a central heating heating system that I think is bad. It's the room fan inside the squirrel cage that sucks / pushes the air past the heat exchanger It seems to run but very slowly. I think it's bad. That said, there is...
  16. A

    90V DC motor connection using receptacle

    My boss asked me connect 90V DC motor by receptacle. What’s receptacle can I use?
  17. S

    Replacing septic tank motor

    I need to connect a replacement motor for a septic tank agitator. I've identified that the motor needs to be connected to a 4mf run capacitor but the wiring diagram (attached) looks strange. I was expecting to see one set of windings connected straight to live/neutral and the other set connected...
  18. Mark W

    Vintage BrookHirst DC motor starters.

    We are in the process of restoring 4 of a group of 5 Brookhirst DC motor starters from 1936. These are a thing of beauty and the engineering in terms of interlocking and ratchet control is incredible. These are all from the same pumping station that controlled well pumps and booster pumps...
  19. Jessey

    Can i use a lawnmower motor for my diy go kart?

    i have a lawnmower motor could i use it to make a diy go-kart and how i am new to enginering
  20. B

    110 V Motor Question

    Hello everyone, I have a piece of 110V plant that is not working. The wire from plug to NVR had a partial cut (rectified). The NVR energises so assumed good. The motor has what looks like two capacitors (white and black). I am trying to run some basic checks on the windings (resistance) but...

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