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delta

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  1. 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...
  2. P

    Two Voltage/CCurrent Values on Motor

    Motor Tags.doc - File Shared from Box.net - Free Online File Storage Got a few queries about the info on the motor tagsin the pics in the attachment. In the first one in the Voltage box, it has 220 Delta and 380 Star. Does this mean that when the motor is running in delta config, the voltage...
  3. 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?
  4. W

    Three Phase, Four Wire Delta Connections

    Hi all, I hope someone can assist me with this. It interests me and I thought this might be the place to ask! On a generator four wire, 3 phase delta system, which is used commonly in Jamaica and no doubt other countreis in the world, they have connections they can do at three phase, 230V...
  5. bcm_spark

    3 Phase to Single Phase

    Evening all, Got a 3 phase motor that needs to run on a single phase supply. I am probably talking (NO SWEARING) but I vaguely remember a few years ago a guy shorting out two of the phases on a motor and it worked on a single phase supply. If the above is bollox, has anybody got a 230v 3KW...
  6. S

    3 phase motor starting prob

    Hi just joined the forum,I am not too expierienced with motor installations hoping some one can help me out with what i hope is a minor problem.just connected 2 x 3 phase 15kw motors through star delta starters .first one works fine,second one starter contacters pull in fine and power goes...
  7. K

    nvq delta training

    has anybody done their nvq with delta training, im looking at starting it. i am just finishing level 3 2330 and have done 17th regs,2391 inspection and testing
  8. D

    Star delta starting

    Hey all, this is my 1st post so hello to everyone. I was wondering, i know the idea behind a star delta starter etc and would have no worries changing a motor over if i disconnected the old one first. What has got me a little bit confused is if you were to fit a motor and all that was there was...
  9. W

    star + delta connections HELP ME???

    Can someone please explain to me how a 3 phase star and delta connection works. I get the fact that the 3 phases are carrying a current and you can get 240 or 400V from them. I have star and delta diagrams in front of me but the ones i am looking at only have 3 lines/conductors whatever you want...
  10. D

    what about delta electrical training?

    iam about do 2392,2391 and nvq level 3 at delta electrical training ltd .is it worth doing in this private institute? what about quality of training? cananyone please comment .thanks
  11. 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...
  12. T

    Star Delta Motor Cable Size

    Can anybody advice on cable size for 250Kw star delta motor, star delta starter supplied with 240mm 4 core SWA protected by 500a fuses. Would like to keep cables at 240mm but terminal box looks a bit small for 2 x 240mm SWA cables motor is rated at 400v 430Amp Regard ps this is my first time...
  13. L

    connecting 415v 3 phase motor

    i have replaced a 415v 3 phase motor at work. The old one had 3 terminals in a line, each with one internal wire connected, and one terminal on other side with 3 internal wires connected. The new one has 6 terminals, each with one internal wire connected. It came with 3 bridging links which i...
  14. R

    Fault finding

    Got a couple of questions that i need help with. I have a single phase capacitor start induction motor that has been running fine , but i turned it off for a while and now when i turn it on again it is not running and it is just humming ? Three phase motor turns on but it is quite slow and...
  15. S

    3 phase motor wiring

    Hi i have recently reconected a 3 phase fan at my workshop its rotation is correct but it now gets very hot any suggestions?

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