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  • Users: ACY
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  1. ACY

    Why would this occur?

    Motor was overhauled in workshop recently. Overhaul process included coat of paint over windings. Once assembled and testing, motor created bang sound, and puff of air. At first workman thought he blew the capacitor, which was quickly eliminated because it was a split phase motor. No capacitor...
  2. ACY

    Coil in a welder

    Was not sure where to post this query... We have recently re-insulated a coil out of a welding unit. (Insualtion paper b/n wire and laminations) Only the coil/laminatins were given to us. The coil then returned burnt out. It is cross sectional copper (6x4mm) wire. My two queries are 1) What...
  3. ACY

    Forklift Battery Charger

    I have a 24 Volt Battery Charger, used for walk-behind forklifts. Its design consists of - transformer, capacitor (15uf), relay, diodes (x2), Ammeter (30A), and electronic circuit boards. I wish to place a manual radial timer in the circuit (8 hr MAX). Am I correct in assuming that the relay...
  4. ACY

    Generator Sizing.

    i just read through FAQ237-766, which related to generator sizing. I was hoping there is a formula for working out generator sizing, (kVA) in relation to either Amps, and/or Watts of attached load.
  5. ACY

    Effect on winding with different frequency

    I was hoping a relatively consice answer could be provided for the following. Wondering what effect on a motor winding would occur with an increase of 200Hz, to 300 Hz. Thanks in advance
  6. ACY

    Which bonding agent is needed?

    I am machining a cylinder shape epoxy glass material, and press fitting it into a hollow cylinder shape metal ring. Inside of the epoxy glass, i am pressing a bronze material gear. These are actually constructed to 'break' under overloaded uses. But, of course, not 'break' under normal...
  7. ACY

    Correct weld for hardened steel

    Have a hardened steel hollow shaft off an electric motor. Apparently it may be chromed on the outer surface. I want to extend a shaft from the original. I dont want to press it in, as it may expand the original outter race where the rolling bearing sits. Once placing the new shaft inside, i...
  8. ACY

    Winding connection question.

    Rewinding a single phase motor. Original winding - run = one in hand (or two in hand), start = one in hand. Replace run with two in hand, and start with two in hand - or one in hand in both, and parrellel connections. Motor contains centrifigul switch, also a motor does not contain a cent...
  9. ACY

    3 phase internal wiring diagrams/connection

    I am looking to update and/or add to my internal connection diagrams of 3 phase motors. (ie. post rewind.) So far i have quite a few 2 speed, single speed, parrellel, series internal conn'tn diagrams, but i am keen to add. Are there many or any websites that display such information, or...

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