motors | Page 6

motors

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  1. T

    3 phase motors ratings

    Hello you clever motor men ive not had a lot to do with motors, what I would like to is if for example a 3 phase motor is quoted as 6kw (forgetting the kva and power factor for a mo) would it normally mean 6kw overall or 6kw per phase ?
  2. W

    motors and starters help!

    lads i have to install and connect a sprinkler system for a bowls green its pretty basic really i have a control unit which is a 6 channel timeswitch which open the sprinkler valves, a float switch for the water tank, and a water pump powered by a 2.2kw motor.(motor to have an independant...
  3. S

    PV run motors

    Got a retractable pool cover, run by two motors either side slide back. Motors are fed by a PV panel. Very simple set up. However I am limited to these installs. Would it be a good educated guess to say because neither motors are working there would be a fault with the PV panel? Both...
  4. J

    240v car ramp motor issue

    hi everyone First and foremost id like to apologise, I am not an electrician I just would like a bit of your knowledge if any of you can help id be iternally thankful. I recently bought a 2 post car ramp that's single phase, not modifed to be but is actually made as a single phase...
  5. M

    3 Phase problems

    Hi all, can someone please provide me with a list of the most common faults that you will encounter with 3 phase equipment such as ac units, motors, etc. Cheers Boys.
  6. P

    motors

    how much did i hate motors at college :D bored me to death but for the level 3 you need to get your head round them :D some good videos that hopefully will clear things up and are better than drawings. also thanks to manda for sending me this one. http://www.youtube.com/watch?v=AHSX7ffX70c
  7. C

    Run two motors from one inverter/ESC??

    Hi All, I have an inverter/speed controller that powers a three phase motor. Based on the information provided below, is it possible to run two of these motors off the one inverter? Inverter Spec Motor Spec The motor has a sanding attachment but can only sand one side of a piece...
  8. b-spark

    Single phase motors.

    Hi, I've got in a single phase motor from a machine. The machines been fixed with a new one now. Having more experience on 3 ph motors I've never really come into contact with 1ph motors. My knowledge was the single phase has two windings. One start one run, set 90' apart from eachother. The...
  9. O

    3 Phase Synchronous Motors

    When starting 3 phase synchronous motors, they require a high starting current 4-7 times the full load current. If this current is taken from the 3 phase supply, the phase windings will burn out, to prevent this, they use starters to start 3 phase synchronous motors. There are some methods of...
  10. T

    Testing motor of vacuum cleaner

    My brother has given me his faulty vac withe old "here you are, your a leccy fix this" Anyway now have it in bits in front of me IR tested the mains wire once disconnected from motor and its ok, tested between the terminals on the motor with some steinels and its belling out, does this mean the...
  11. J

    Books on 3 phase motors

    Can anyone recommend any good books on 3 phase motors
  12. W

    Testing Motors

    When testing Insulation Resistance or Continutiy on a 3phase Motor, do you need to disconnect the cables from the motor? Or do you just test I.R to the starter, then I.R from starter to motor? (as the starter will be open when dead) Would a motor come under "equipment vulnerable to testing"...
  13. S

    3 Phase Motors

    hi i have to wire up a few 3hp 5A 3 phase motors and usually use a 3 core swa but is there an alternative cable to use apart from singles?? Thanks for your help in advance
  14. G

    Mains frequency effect on cookers

    I live in the UAE and purchased a cooker here, which I would now like to send to the Philippines. However, there is a difference in mains frequency between the two countries, and I'm worried that the cooker may not work in the Philippines, or only work dangerously. According to Wikipedia...
  15. D

    Panasonic Brushless motors and controls

    I have come accross some products from panasonic in our store and am trying to find out some information on them,predominantly i am looking to find out about a Panasonic brushless geared motor. Model Number: MBMG5ACBN002. Also i require information on what i think to be a regulater or...
  16. andyb

    Variable Drive Motors

    Has anyone been involved with variable drive motors? I've been asked to run a feed for one and although the supply cable is only 2.5mm, I've been asked to install a 16mm earth. Can anyone explain?
  17. T

    E stopping invertor driven motors

    What the correct way for an emergency stop or the opening of a guard to stop an invertor driven motor. Is the opening of a contactor supplying the 3 phase to the invertor a bit too drastic especially as the motor will still be connected and running when the supply is suddenly interrupted. I know...
  18. B

    Study of short circuit pattern in induction motors and it’s effect on circuit brakers

    Hello guys. I am a student on my graduation year . in electrical engineer major. I am from UAE studying Higher Diploma at Higher Colleges of Technology . and for my final project they gave me this idea. " Study of short circuit pattern in induction motors and it’s effect on circuit...
  19. M

    Star Delta connections regarding motors

    Hope someone can help, Basically i'm just getting into heavy industrial and when i have been opening various panel's and motors i can't get my head around the actual terminating of star,delta from the panel to the motor as they seem to move L1,L2,L3 to L2,L3,L1. Any ideas?
  20. D

    IP Rating (motors)

    could somebody please tell me the ip rating for the top part of a motor ? i seem to have IP4X on my mind, would this be correct ?

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