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Forum: Transformers, Phase Converters and VFD

Machine voltage issues, three phase via single phase power, and variable frequency drives discussion

  1. Sticky Thread Sticky: Rotary Phase Converter Designs and Plans

    Started by Milacron, 09-21-2006 12:46 AM
    10 Pages
    1 2 3 ... 10
    • Replies: 198
    • Views: 444,562
    11-20-2021, 06:06 PM Go to last post
  2. Sticky Thread Sticky: Motor drum switch wiring references Please look before asking

    Started by JST, 04-13-2020 10:13 PM
    drum, phase, single, step, switch
    • Replies: 1
    • Views: 4,020
    04-13-2020, 10:13 PM Go to last post
  3. Sticky Thread Sticky: Huanyang VFDs.... Banned from discussion

    Started by JST, 08-02-2017 04:05 PM
    banned, huanyang, sold, units, vfds
    • Replies: 0
    • Views: 19,296
    08-02-2017, 04:05 PM Go to last post
    • Replies: 0
    • Views: 11,260
    04-03-2017, 01:11 PM Go to last post
  4. Sticky Thread Sticky: Please keep threads to one subject as much as possible

    Started by JST, 01-10-2016 01:09 AM
    archives, attach, cases, cheap, close, discussion, easy, ends, fast, force, general, instance, means, original, part, pick, plan, post, question, searchable, start, subject, temporarily, thread, vfds
    • Replies: 0
    • Views: 15,239
    01-10-2016, 01:09 AM Go to last post
  5. Sticky Thread Sticky: A reminder.... please make your thread title meaningful

    Started by JST, 02-23-2013 10:31 AM
    • Replies: 0
    • Views: 23,359
    02-23-2013, 10:31 AM Go to last post
  1. 2 speed motor of VFD - check my reasoning plz

    Started by Peter., 01-09-2022 01:15 PM
    • Replies: 8
    • Views: 572
    01-16-2022, 03:22 PM Go to last post
  2. Two phase to three phase conversion in New Zealand

    Started by Brian Campbell, 01-11-2022 03:42 PM
    4 Pages
    1 2 3 ... 4
    • Replies: 74
    • Views: 1,993
    01-16-2022, 02:41 PM Go to last post
    • Replies: 1
    • Views: 93
    01-16-2022, 10:52 AM Go to last post
  3. What type of switch do I need?

    Started by josh623, 01-10-2022 12:15 PM
    connects, lol, pin, speed, switch
    • Replies: 12
    • Views: 673
    01-15-2022, 11:48 PM Go to last post
  4. Contactor Overload Relays on 2 phases

    Started by Peter from Holland, 01-13-2022 06:57 AM
    amps, failure, overload, phase, sensitivity
    • Replies: 9
    • Views: 472
    01-15-2022, 11:26 AM Go to last post
  5. 3~MOT motor tag

    Started by cb1, 01-14-2022 02:30 PM
    • Replies: 0
    • Views: 215
    01-14-2022, 02:30 PM Go to last post
  6. Ideas on a project with a 6 hp ac motor?

    Started by fettersp, 01-12-2022 06:45 PM
    ideas, motor, rpm, spins, tank
    • Replies: 13
    • Views: 855
    01-14-2022, 12:29 AM Go to last post
  7. Interesting video about 3 phase

    Started by Froneck, 01-13-2022 11:07 AM
    anymore, fact, interesting, read, video
    • Replies: 4
    • Views: 342
    01-13-2022, 03:46 PM Go to last post
  8. Three-phase North-American UL/NSF oven in Japan

    Started by koshien, 12-26-2021 02:45 AM
    • Replies: 10
    • Views: 812
    01-13-2022, 04:02 AM Go to last post
  9. 3 phase starter circuit

    Started by madmachinst, 11-16-2021 08:39 PM
    10 Pages
    1 2 3 ... 10
    • Replies: 186
    • Views: 8,888
    01-12-2022, 05:34 PM Go to last post
    • Replies: 4
    • Views: 196
    01-12-2022, 02:42 AM Go to last post
    • Replies: 7
    • Views: 338
    01-12-2022, 01:51 AM Go to last post
    • Replies: 16
    • Views: 821
    01-11-2022, 07:28 PM Go to last post
  10. VFD failure modes...?

    Started by RG Vieira, 01-07-2022 03:51 PM
    2 Pages
    1 2
    fail, good, modes, vfd
    • Replies: 20
    • Views: 971
    01-09-2022, 03:48 PM Go to last post
  11. RPC Capacitor help

    Started by Kruzzz, 01-03-2022 06:58 PM
    idler, motor, t1t3, t2t3, voltage
    • Replies: 3
    • Views: 330
    01-09-2022, 12:00 PM Go to last post
  12. Advice On 3 Phase Power Options For My First Mill

    Started by Nust, 12-27-2021 01:30 PM
    error, motor, phase, power, vfd
    • Replies: 19
    • Views: 902
    01-06-2022, 08:07 PM Go to last post
  13. Questions about a 3 Phase motor for an RPC

    Started by Lonster, 12-16-2021 03:04 PM
    2 Pages
    1 2
    button, circuit, motor, rpc, start
    • Replies: 21
    • Views: 1,701
    01-06-2022, 04:14 PM Go to last post
    • Replies: 1
    • Views: 224
    01-06-2022, 07:59 AM Go to last post
    • Replies: 9
    • Views: 4,876
    01-05-2022, 10:40 PM Go to last post
  14. RPC transformer sizing ratio or rules of thumb

    Started by EW57, 01-05-2022 07:15 PM
    • Replies: 1
    • Views: 413
    01-05-2022, 07:31 PM Go to last post
  15. Which transformer to get to step up 240v to 480v?

    Started by Jaxian, 01-01-2022 08:22 PM
    2 Pages
    1 2
    • Replies: 23
    • Views: 1,067
    01-04-2022, 08:14 PM Go to last post
    • Replies: 35
    • Views: 1,628
    01-04-2022, 11:15 AM Go to last post
    • Replies: 0
    • Views: 202
    01-03-2022, 02:58 PM Go to last post
    • Replies: 2
    • Views: 252
    01-01-2022, 07:16 PM Go to last post
  16. power consumption of light bulbs

    Started by dian, 01-01-2022 10:45 AM
    amps, bulbs, consume, power, watts
    • Replies: 7
    • Views: 446
    01-01-2022, 05:21 PM Go to last post
  17. Lincoln Idealarc R3S-325 to single phase

    Started by minipower, 07-27-2021 09:32 PM
    calculator, capacitor, impedance, phase, resistance
    • Replies: 8
    • Views: 801
    12-30-2021, 02:04 PM Go to last post
  18. 40HP RPC bearing size

    Started by claya, 12-29-2021 01:22 AM
    40hp, bearing, motor, rpc, size
    • Replies: 5
    • Views: 468
    12-30-2021, 09:46 AM Go to last post
    • Replies: 11
    • Views: 3,403
    12-28-2021, 03:41 PM Go to last post
  19. 3ph POWERMATIC 1150 (How to wire vfd with mag starter)

    Started by Grnmtntri11, 03-22-2020 06:15 PM
    2 Pages
    1 2
    • Replies: 21
    • Views: 2,908
    12-27-2021, 01:45 PM Go to last post
  20. Single phase from 3ph panel W/ wild leg

    Started by dkmc, 12-22-2021 08:23 AM
    leg, panel, phase, single, wild
    • Replies: 19
    • Views: 1,610
    12-24-2021, 06:25 PM Go to last post
    • Replies: 43
    • Views: 2,145
    12-21-2021, 09:56 PM Go to last post
  21. 15x30 leblond vfd help 1963 servol shift

    Started by Kruzzz, 12-21-2021 12:29 AM
    15x30, 3ph, lathe, vfd, wire
    • Replies: 4
    • Views: 543
    12-21-2021, 11:45 AM Go to last post
  22. Noisy "Light" Pole?

    Started by Ox, 10-25-2018 09:43 PM
    3 Pages
    1 2 3
    • Replies: 56
    • Views: 6,307
    12-21-2021, 09:33 AM Go to last post
  23. How worried should I be about "dirty" power for a CNC?

    Started by DocsMachine, 12-09-2021 04:33 PM
    2 Pages
    1 2
    basically, cnc, feed, machine, native
    • Replies: 20
    • Views: 1,275
    12-21-2021, 12:30 AM Go to last post
  24. How to De-Energize transformer?

    Started by Chuck Evans, 12-08-2021 05:40 PM
    3 Pages
    1 2 3
    • Replies: 59
    • Views: 3,101
    12-20-2021, 09:40 AM Go to last post
  25. 3 phase soft start application

    Started by cg285, 02-13-2020 11:03 AM
    10 Pages
    1 2 3 ... 10
    • Replies: 187
    • Views: 15,413
    12-17-2021, 05:05 PM Go to last post
  26. Control circuit woes

    Started by Mr.Green, 12-09-2021 07:31 PM
    feed, buttons, circuit, machine, start
    • Replies: 6
    • Views: 605
    12-16-2021, 11:44 PM Go to last post
  27. Cut HP vs RPC HP vs Haas Spindle HP

    Started by 1032screw, 12-13-2021 01:26 PM
    breakers, machine, phase, spindle, voltage
    • Replies: 15
    • Views: 832
    12-15-2021, 09:29 AM Go to last post
  28. Baldor Air Compressor Motor Issues

    Started by S.C., 03-05-2020 07:09 PM
    2 Pages
    1 2
    • Replies: 32
    • Views: 4,786
    12-15-2021, 02:14 AM Go to last post
  29. Old Bewo cold saw wiring help

    Started by lmeuser, 12-07-2021 02:18 PM
    • Replies: 2
    • Views: 501
    12-14-2021, 08:34 PM Go to last post

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