star delta

  1. C

    3 phase motor star delta staring controls

    Hi guys with the star delta motor starting controls I know you have 3 contractors, the main, the star & then delta. The star contractor is looped out as star configuration at the top but I cannot see how the delta contractor is configured in delta, it just looks like a standard contractor to me...
    • Chrisday1990
    • Thread
    • 3 phase contactor contractor controls delta motor phase star delta
    • Replies: 20
    • Forum: Talk Electrician Forum
  2. P

    2 speed star delta motors

    Hi guys, would anyone have any info on 2 speed star delta motors the one I'm looking at has a selector switch on control panel for low speed this brings in one contactor when you rotate the switch from low speed through off position to high speed position it drops out the low speed contactor...
  3. A

    Star Delta Problem !

    Hi Guys, My mate has a big fan motor on a star delta starter that used to work fine, the other day it stopped working and when he tries to start it, it starts turning but when it tries to kick into delta it just stops but blows no fuses, he bought a new motor and put it on but it has still got...
  4. C

    Star Delta starter Fault...

    As part of my oral exam (oo err!) for my marine engineer license we get asked electrical questions.One such question that's been asked is " What would happen if a Star Delta Starter didn't change over and continued to run in Star and what would you do if it had to keep running in star?" Ie part...
    • csaw2121
    • Thread
    • asked delta fault star delta starter voltage
    • Replies: 1
    • Forum: UK Electrical Forum
  5. C

    Star Delta Question...

    This is a question that gets asked sometimes in an Oral test I need to have for my Marine Engineer license... Any help would be appreciated as I'm a little stuck on this. I realize that the Star Delta configuration is for reduced voltage starting say 254V Vph from 440V supply (1/ root 3) (or is...
  6. leespeed

    star delta motor .....extra stop/start....415v abb

    whats the best and safest way to install a remote start stop system on a star delta motor .........i can only seem to find remote stops in series and no starts will it have to be a relay low volatge system ...... any info appreciate ....its for a church organ motor in cella organ on 3rd floor...
  7. M

    star delta

    Hello folks I have been asked to wire a star delta motor auger feeder ,it is in a farm yard and the customer has asked for it to be wired via a waterproof plug and socket , so that it can be put out of the way during winter,etc.has any one a steer on how people get around the issues of doing...
    • mikehopkins
    • Thread
    • delta electricians' talk star delta
    • Replies: 15
    • Forum: UK Electrical Forum
  8. S

    Star delta starters

    I have some stock that I'm trying to get rid off, due to customers changing their minds as well as materials being wrongly specked for some jobs. I'll give some examples of some of the equipment and if anyone is interested they can e mail me for a full list and photos. 4-20 signal isolators...
    • Scintilla
    • Thread
    • delta electricians' talk star delta
    • Replies: 4
    • Forum: UK Electrical Forum
  9. Brightspark2

    Star Delta Starter, Remote stop start

    I have a star delta starter that I'm wiring a remote start stop too. Now there is a spare 3 wire swa cable running from next to the starter to the location that the remote start stop is needed. My question is can I use a 3 wire start stop on this star delta starter, as I see it its not possible...
  10. Amp David

    Star Delta Starter

    Can anyone advise of a good reliable supplier off star delta starters please. Local places don't do this sort of stuff and not driving miles to somewhere that will, so online is preferred. Thanks for suggestions.
  11. C

    Star Delta Theory

    Hi All. Firstly would like to say thanks to everyone who reads this and provides any useful information. I have used the search button and have read through previous posts/ stickys before posting this. Basically I would like to understand the voltages clearer in star and delta, I know...
  12. L

    Which source drive the star delta contactor

    Hi sorry for my newbie question, I've a question about a star delta starter. What exactly drive the mechanical contact in contactor, is't AC 240/220V separate source from L1,L2,L3? thanks.
    • layzbass
    • Thread
    • aus contactor delta drive electricians' talk source star delta
    • Replies: 5
    • Forum: Australia
  13. W

    How to know whether to wire as star or delta?

    Hi All, When connecting a motor, how do you know whether it needs to be wired as star or delta? Thanks
  14. S

    Help with a 3 phase star delta motor

    I have been called out to replace a DOL starter that somebody fitted last year, It controls a 3 phase motor on an extraction unit. The customer has said that the fan used to start slow and then after 10 secounds it would speed up to full speed. The electrician that changed the starter replaced...
    • sheriff78
    • Thread
    • 3 phase canada delta electricians' talk help motor phase speed star delta starter
    • Replies: 41
    • Forum: Electrician Talk | All Countries
  15. E

    How to 'size' contactors for star delta circuit ?

    Hi All , How do i size the main , star and delta contactors for a motor control circuit using a 50Kw motor ? Do i just rate all contactors at 50 kW ? Any help appreciated. Thanks :)
    • electek
    • Thread
    • canada circuit contactor contactors delta electricians' talk how to motor overload phase size star delta
    • Replies: 7
    • Forum: Electrician Talk | All Countries
  16. E

    Anyone got a detailed control wiring circuit for star delta ?

    As above , has anyone got a good drawing for a star delta control circuit wiring (just the control wiring) that is easy to understand and wire directly from ?:)
  17. D

    star delta starter

    Hi. There is a 60 amp 3 phase supply and a company has said they will to put in a star delta motor starter (55kw) which will run a gear box(55kw) that needs to be tested i do not know if the gearbox runs at 55kw continuosly , is this possible or would it be better to run a new supply? thanks
  18. R

    Star delta motor help

    Right guys, apologies in advance for lack of detail etc but I've only had a very brief look at this one today and I'm expected to work miracles tomoro. A three phase 13kw motor for an AHU extract fan was running very noisy and they sent it away to be refurbd It has come back and been put back...
  19. G

    star and star delta help!

    hi, this is my first post on the site, i am currently studying c& g 2330 and we have reached the star and star delta section of the course. for whatever reason i am struggling to get my head around the subject and was hoping someone could shed some light on it as simply as possible. any help...
  20. 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?
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