motors

  1. J

    Books on 3 phase motors

    Can anyone recommend any good books on 3 phase motors
  2. 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
  3. 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...
    • gdi2k
    • Thread
    • aus cooker effect frequency mains motors replacement
    • Replies: 8
    • Forum: Australia
  4. 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?
  5. 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...
  6. 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?
  7. 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 ?
  8. C

    Changing 3Phase Motors

    I maintain conveyor systems and we are always changing out motors, and I have been wondering if before we put ' back into service ' we should be taking some test readings and recording them . I have asked our managers and they reckon that because we are not adding to or changing the circuit that...
  9. M

    neutral on three phase motors

    please can anyon tell me do three phase motors have or have not got neutral, please if you can for star and delta thanks
  10. T

    Please Help - 3 water pumps running in parallel

    Hey Guys I am based in China and have 3 identical 60 meter 220v 1500 w water pumps supplying water up a hill of height about 120 meters and distance about 260 meters. They are currently connected in parallel but the problem is that they are all running at different speeds hence the water is not...
    • Tony1mail
    • Thread
    • aus control help level motor motors parallel please pumps running water
    • Replies: 5
    • Forum: Australia
  11. C

    AM2 Tomorrow!!!

    Hi Ive completed my 2330 level2 tec certificate and nvq and lev 3 tec certificate. I have my am2 tomorow and really not feeling good about it as alot of the installation I dont work with I spend my day house bashing and testing never touched motors or mi. If I dont pass how does this leave...
  12. T

    3ph motors

    is it possible to get a 3ph motor rewound to single phase as i need same housing for apump:)
  13. C

    Motors and Generators

    Could anyone tell me where I might find a reference or guide for trouble shooting AC and DC motors and generators.I'm looking for some type of checklist. Someone told me that years ago they saw one that listed the most likely problem" if the motor is doing this, then these would be the most...
  14. R

    armature winders!!!

    Hello, could someone please tell me whether armature winders test the motors etc they wind or is the job merely involved with winding the coils.Im trying to establish whether they actually come into contact with electricity in the course of their job. Regards Ron
    • Ron
    • Thread
    • aus motors wind
    • Replies: 5
    • Forum: Australia
  15. T

    star delta motors

    i have a panel with 2 no star delta pumps 39 kw 63 amps flc can anybody size cable for me length of run approx 100mts 1no pump is on standby but could start if pressure drops the cable has to be afire rated swa clipped to a tray running through an underground carpark the panel has 50 amp motor...
    • tullynagrow
    • Thread
    • aus delta motors star delta
    • Replies: 2
    • Forum: Australia
  16. D

    Cable selection taking into account ''Startup Current''

    New to these forums an just finished my apprenticship.. Just have a quick question.. When selecting cable for small commercial fan motors do you have to take into account the startup current? The motors usually are around 9.8A FLC and sometimes have a startup of around 30-35A. Do i need to...
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