speed

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  1. S

    trainee in need to help

    hi im a trainee in need of help! im revising for my 309 science and principles exam and i have some revison questions im going through, the first one i could do with a hand with is: "describe briefly how electronic devices may be used ina a motor speed conrol unit" many thanks fro any...
  2. M

    110 v motor with speed controller

    Hi all thanks for letting me join im generally very good at working out elecrical things but this has got me a little stumped. I am trying to install this speed controller to my 110v ac motor (please see attached photos) I have been told this is the correct controller for this motor and the...
  3. J

    SKY Customer Services

    I've been signed up with SKY for the past 11 months, I get my phone line, TV & broadband through them. When I took out the package they promised me the world and were very helpful but after about a month my broadband speeds slowed down to less than 1 Mbps. I emailed them and they said it's...
  4. 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...
  5. T

    Dam speed camera van (robbing *******s)

    speed camera van was on a47 in layby had yellow light flashing on roof and in front of it was a broken down lorry with cab up so thought it was breakdown for the truck till got closer and found out it was speed camera van.. Dam! yeah i know shouldn't speed but forgot in van speed limit is...
    • tonto33
    • Thread
    • camera electricians vans speed van vehicle
    • Replies: 101
    • Forum: UK Electrical Forum
  6. Clive P

    3 Phase Bandsaw.

    HI, Just about to post and I noticed a similar thread, anyway here goes. Not worked on motors or controls for some time so after some advice. A friend of mine has just got his hands on a 3Ph Startrite 352 Bandsaw, yes; you're right only a single Phase supply available. At the moment it is...
  7. F

    Fan speed controllers?

    Hi guys wanting to run 2 fans off one speed controller will it work?? Or will they need 2 separate controllers
  8. cliffed

    High speed

    Any one have any knowledge on high speed shutter doors,got problem with controls,up,Down & stop buttons fed from pcb unit,connected with ribbon cable.
  9. B

    help with a fan speed controller

    Hi guys I'v got a question to do with a fan speed controller. It's a systemair STL-0100-at. I can't get the model of the fan/ motor it's controlling due to the badge being weathered. Bit it is single phase. I am just wondering how these speed controllers work. I was called to a site for the...
  10. joel89

    JIB Electrotechnical Certification Scheme (ECS) one for tony. demag jib hoist

    heyup tony, stripped one of our demag jib hoists down suspect contactor welded in, and i have found what appears to be a double "coil" contactor A1 , A2, B1, B2. the motor is a 2 speed hoist, with another contactor mounted at the side 2phase in from the double coil contactor dead side and 4...
  11. S

    Commercial canopy fan help

    Hi i have a canopy fan to wire up the problem is a 3rd party has left no wiring diagram for it. It will be working of a speed controller which has the connections N L E U1 U2 1 2 . The Fans make is RUCK Ventilation DVNI 500 E4 Single phase it has 5 conenctions at the isolator. It is numbered...
  12. N

    3 Phase motor on AHU

    Hi everyone. Have a problem iv not come across before. So the motor has stopped running on the AHU in our building. It's controlled by an inverter. First thing I done is check the inverter was running (which it was), then checked for voltage at the motor terminals. To my surprise (and probably...
  13. ses

    DeWalt DCD985L2 18v XR Li-Ion 3 Speed Combi Drill

    For sale but perfect working order 2 batteries Charger Case All new internals just replaced under warranty £160 Camberley Surrey
  14. chcnorris29

    How can I speed up?

    Hello, I am an apprentice electrician doing work mostly on domestic 3 bed house rewires (do flats and other houses as well but most are 3 bed houses) we normally do the rewires in 1 day (start about 8 and finish time varies between 2-3 (if lucky) and 4-6 most of the time) The issue is that it...
  15. R

    Motor speed controller.

    I have a milling machine that has too high a motor speed. If I use a speed controller does that reduce the power output from it as well as the speed? It is a 0.5hp 3 phase motor. Also, where's the best Alsace to get one?
  16. P

    Industrial Ceiling Fans - Speed Control Issue

    Hi Guys, I have two ceiling fans and a speed control unit which switches on the fan and allows you to control the speed of the fans. Speed Control Unit Model is RV-05 2A max, 480W - with Forward / Reverse and OFF switching. I only have T&E from the switch to each fan (2 x Switched Lives which...
    • Poorle
    • Thread
    • ceiling control controller fans industrial issue speed switch switched
    • Replies: 11
    • Forum: UK Electrical Forum
  17. S

    Warning Watch Your Speed

    Good Evening All, Just a quick one that I was asked to share by a course tutor on a driver awareness course. In my ignorance and not knowing the actual class of my vehicle and presuming that it would be the same as a car I was collared for speeding a couple of weeks ago by a stationary safety...
  18. B

    flaktwoods fan speed controller wiring?

    i have been called to see a extractor fan problem, the owner complained that when he turned on the flaktwoods fan speed controller then the fuse would blow and the circuit breaker trip. I had a look, there are three cables with the fan: red-z, blue-u, black-uz, i was thinking something wrong...
  19. G

    remote switching between star and delta (both ways)

    Hi all, I apologise for jumping straight in with a new thread asking questions. I did search and can't find any info on my problem. Getting to the point... I have fitted an ABB EXE2S star delta starter to run a 3phase 15kw motor on an extraction fan. The starter is working perfectly but the...
  20. J

    3 Phase Motors Speed Control

    Hi, Does anybody know of any alternative to governing the speed of a 3 phase motor than a frequency inverter? Thanks in advance, Jamie
    • Jamie3032
    • Thread
    • 3 phase control frequency motor motors other phase speed
    • Replies: 32
    • Forum: UK Electrical Forum

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