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delta

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  1. timo1

    NVQ3 with Delta training, help with photos please....

    Hi, Just compiling my online folder through Delta training for my NVQ. I am happy with what I write for the examples, but can anyone help me with the amount of photos required? Do you have to literally have to have a photo showing you complete every aspect of every task? For example, "I...
  2. L

    3 phase motor connection type???

    Hi Guys, I am now working in a industrial environment as an Electrician having spent the majority in a domestic or commercial environment, I have done installation work with 400v 3 Phase however I am a bit rusty on the STAR / DELTA 'meaning' on the id plate of the motor. What my question...
  3. L

    Volts drop - 3 phase delta pump supply

    Came across a supply for a 3 phase delta water pump at a friends farm the other day, the cable appeared too small at 2.5mm swa given the distance (1/4 mile) so far as I was concerned. The 25A 3 phase 30ma RCD had been fried but the cable looked to be ok. Not being a 3 phase expert I pointed my...
  4. L

    Volts drop - 3 phase delta pump supply

    I've reposted this in the 3 phase forum
  5. N

    Redland Delta tile hooks

    Has anyone fitted hooks on a roof with Delta tiles, if so did they fit 50mm pantile hooks or 40mm rosemary hooks as the delta profile is very flat between peaks of tiles?
  6. O

    has anyone used delta training?

    has anyone used delta training for there online nvp3? and did u think they Where any good?
  7. 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...
  8. S

    wye vs delta current

    why the wye connected motor draws more current than a delta connected motor?
  9. S

    Delta electrical training

    Hi all, I am looking into doing my nvq3, and have found delta electrical training, based in preston. Have any you you had any dealing with these, or heard anything about them, any info would be welcomed, many thanks.
  10. B

    3 Phase Motor Alternative Connection

    Hi All, Here is the scenario that I have. 3 Phase, 690 Volt Motor (Delta), 560 kW and started by a star-delta starter. So the motor is connected in delta at full voltage 690 Volts after the chageover from star. Now, this motor has failed and is beyond repair, and lead time is considerable for...
  11. D

    3 Phase Stuff..!

    going for a job interview tuesday and well i have got to do a trade test :rolleyes: stuff i should know but have not used it for a while!! as i never really needed it..! had a good heads up so far but 2x Niggly stuff which i not really had much to do with..! Star / Delta Motors...! am i...
  12. C

    Delta Electrical Training

    Hi Has anyone else used Delta training for the NVQ3, and did anyone else have to complete the knowledge assessment paper at the end?
  13. S

    3 phase motor

    Hi all Have a 3 phase motor 0.37kw for a small convayor belt, wired up in delta. Does this need a star/delta starter or would it be ok for a DOL starter?
  14. 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 :)
  15. 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 ?:)
  16. H

    Star / Delta Compressor Diagram

    Hi all, Could anybody point me in the direction of a diagram for star / delta wiring for a compressor, obviously found them for the normal Y/D motor wiring with the stop - start but cannot find any with the pressure switch. On the compressor the pressure switch is NC but is there a diagram...
  17. E

    Reconnecting a star / delta motor.

    Hi All , Can anyone give me any advise on reconnecting a star / delta motor which was disconnected by someone else and the 6 wires were not labelled ! I understand the way star delta works and how it changes over e.t.c. e.t.c. but i've heard about in some cases motors running ok...
  18. 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
  19. S

    Open Delta

    Can someone please explain how an open delta VT principle is used to detect earth fault in some cable or winding?
  20. 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...

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