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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: 180
    • Views: 377,519
    06-11-2019, 10:05 AM Go to last post
  2. 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: 8,632
    08-02-2017, 04:05 PM Go to last post
    • Replies: 0
    • Views: 5,681
    04-03-2017, 01:11 PM Go to last post
  3. Sticky Thread Sticky: Please keep threads to one subject as much as possible

    Started by JST, 01-10-2016 12:09 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: 9,503
    01-10-2016, 12:09 AM Go to last post
  4. Sticky Thread Sticky: A reminder.... please make your thread title meaningful

    Started by JST, 02-23-2013 09:31 AM
    • Replies: 0
    • Views: 17,680
    02-23-2013, 09:31 AM Go to last post
  1. Question on VFD vs RPC

    Started by rbahr, 10-13-2019 12:00 AM
    5hp, motor, rpc, start, vfd
    • Replies: 11
    • Views: 641
    10-22-2019, 07:27 AM Go to last post
  2. Mechanical ways to do a T branch circuit?

    Started by rons, 10-18-2019 03:33 PM
    2 Pages
    1 2
    • Replies: 29
    • Views: 1,139
    10-21-2019, 07:58 PM Go to last post
  3. VFD Bus capacitor reforming Docs

    Started by mike_kilroy, 01-09-2017 01:46 PM
    couple, docs, share, thought, vfds
    • Replies: 6
    • Views: 1,980
    10-21-2019, 10:43 AM Go to last post
  4. Overload Sizing and FLA when using RPC

    Started by *D'B=6bk, 10-17-2019 01:33 PM
    2 Pages
    1 2
    • Replies: 24
    • Views: 884
    10-21-2019, 12:18 AM Go to last post
  5. Help with Wiring Rotary Phase Converter

    Started by Cephalon, 10-11-2019 03:46 PM
    • Replies: 5
    • Views: 468
    10-20-2019, 12:20 AM Go to last post
  6. how can I tell the design voltage of an unlabeled 3 phase motor?

    Started by tomjelly, 09-20-2019 04:16 PM
    2 Pages
    1 2
    machinery, motor, phase, starter, transformer
    • Replies: 20
    • Views: 1,502
    10-20-2019, 12:02 AM Go to last post
    • Replies: 5
    • Views: 351
    10-19-2019, 11:26 PM Go to last post
  7. 460v 3phase for a VMC with 240v 1ph?

    Started by Agfrvf, 10-17-2019 12:15 PM
    20hp, 240v, 460v, motor, vmc
    • Replies: 4
    • Views: 296
    10-19-2019, 07:19 PM Go to last post
  8. Isolation Transformer Wiring Help Needed

    Started by Machinery_E, 10-17-2019 10:49 PM
    • Replies: 3
    • Views: 304
    10-18-2019, 11:04 PM Go to last post
    • Replies: 25
    • Views: 1,871
    10-18-2019, 03:43 AM Go to last post
  9. Run a welder off a Phase Perfect Converter?

    Started by baran3, 10-05-2019 06:22 PM
    converter, perfect, phase, unit, welder
    • Replies: 9
    • Views: 946
    10-17-2019, 09:44 AM Go to last post
    • Replies: 17
    • Views: 822
    10-15-2019, 07:53 PM Go to last post
  10. VFD vs. Rotary Phase Converter

    Started by Chuck Pool, 01-15-2007 05:48 PM
    • Replies: 16
    • Views: 16,770
    10-14-2019, 01:16 AM Go to last post
  11. Need help finding a manual

    Started by redragon1981, 10-13-2019 07:21 PM
    greatly, lists, manual, parameters, reprogram
    • Replies: 0
    • Views: 185
    10-13-2019, 07:21 PM Go to last post
    • Replies: 8
    • Views: 381
    10-13-2019, 10:37 AM Go to last post
    • Replies: 16
    • Views: 959
    10-13-2019, 10:19 AM Go to last post
  12. 600V VFD for Bridgeport

    Started by Leadfootin, 10-12-2019 07:39 PM
    600v, bridgeport, prefer, unit, vfd
    • Replies: 0
    • Views: 223
    10-12-2019, 07:39 PM Go to last post
    • Replies: 38
    • Views: 5,420
    10-11-2019, 03:52 PM Go to last post
    • Replies: 18
    • Views: 1,111
    10-10-2019, 10:35 PM Go to last post
    • Replies: 13
    • Views: 1,048
    10-10-2019, 06:20 PM Go to last post
  13. Need 400V 3phase for CNC machine, best approach?

    Started by SeanDean, 10-10-2019 05:19 AM
    400v, machine, main, transformer, wye
    • Replies: 0
    • Views: 247
    10-10-2019, 05:19 AM Go to last post
    • Replies: 12
    • Views: 671
    10-09-2019, 08:38 PM Go to last post
    • Replies: 10
    • Views: 552
    10-07-2019, 05:13 PM Go to last post
  14. Rewiring a Hardinge TBF for VFD control

    Started by Dunedin, 09-30-2019 01:54 PM
    control, motor, speed, tbf, vfd
    • Replies: 10
    • Views: 682
    10-06-2019, 08:30 AM Go to last post
    • Replies: 2
    • Views: 424
    10-05-2019, 01:10 PM Go to last post
  15. Using original motor controls with a VFD

    Started by Warren, 11-10-2010 04:08 AM
    3 Pages
    1 2 3
    • Replies: 47
    • Views: 10,723
    10-05-2019, 12:10 PM Go to last post
    • Replies: 4
    • Views: 477
    10-05-2019, 08:48 AM Go to last post
  16. Breaker size for 10 hp RPC?

    Started by MushCreek, 09-29-2019 05:46 AM
    40a, breaker, motor, rpc, run
    • Replies: 7
    • Views: 732
    10-05-2019, 05:07 AM Go to last post
    • Replies: 1
    • Views: 318
    10-01-2019, 09:46 PM Go to last post
    • Replies: 10
    • Views: 765
    09-29-2019, 08:37 PM Go to last post
    • Replies: 5
    • Views: 553
    09-29-2019, 07:08 PM Go to last post
  17. Phase Perfect dpc-a10

    Started by Hardplates, 08-16-2019 12:55 PM
    6 Pages
    1 2 3 ... 6
    • Replies: 109
    • Views: 6,421
    09-29-2019, 11:55 AM Go to last post
    • Replies: 4
    • Views: 453
    09-28-2019, 08:36 PM Go to last post
  18. VFD for 3 machines?

    Started by wyelk, 09-22-2019 09:44 PM
    completely, converter, machines, vfd, vfds
    • Replies: 10
    • Views: 840
    09-28-2019, 04:36 PM Go to last post
  19. Rotary Phase Converter Questions

    Started by Kevin T, 09-20-2019 06:00 PM
    • Replies: 6
    • Views: 733
    09-28-2019, 02:26 PM Go to last post
    • Replies: 11
    • Views: 665
    09-27-2019, 09:01 PM Go to last post
  20. Phase converter currents out of balance

    Started by Lpjack, 09-25-2019 10:30 PM
    converter, current, phase, shear, unloaded
    • Replies: 6
    • Views: 640
    09-27-2019, 08:11 PM Go to last post
  21. Potential relay noise in RPC build

    Started by geekamole, 09-23-2019 01:34 PM
    panel, potential, relay, start, switch
    • Replies: 11
    • Views: 701
    09-27-2019, 07:57 PM Go to last post
  22. Which VFD for my 10 hp air compressor?

    Started by TMVT, 09-27-2019 06:11 PM
    air, compressor, good, purchase, vfd
    • Replies: 0
    • Views: 331
    09-27-2019, 06:11 PM Go to last post
  23. Question Replacement VFD Spindle Drive for Three J425

    Started by UARCHAEA, 04-26-2015 09:53 PM
    • Replies: 9
    • Views: 3,427
    09-27-2019, 05:31 PM Go to last post

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