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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 01:46 AM
    10 Pages
    1 2 3 ... 10
    • Replies: 180
    • Views: 380,359
    06-11-2019, 11:05 AM Go to last post
  2. Sticky Thread Sticky: Huanyang VFDs.... Banned from discussion

    Started by JST, 08-02-2017 05:05 PM
    banned, huanyang, sold, units, vfds
    • Replies: 0
    • Views: 9,062
    08-02-2017, 05:05 PM Go to last post
    • Replies: 0
    • Views: 5,882
    04-03-2017, 02:11 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 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: 9,774
    01-10-2016, 01:09 AM Go to last post
  4. Sticky Thread Sticky: A reminder.... please make your thread title meaningful

    Started by JST, 02-23-2013 10:31 AM
    • Replies: 0
    • Views: 17,928
    02-23-2013, 10:31 AM Go to last post
  1. Solid State Relays Instead of Contactor?

    Started by rpseguin, 11-17-2019 02:09 PM
    2 Pages
    1 2
    contactor, solid, state, relays, wondering
    • Replies: 26
    • Views: 923
    11-22-2019, 12:55 AM Go to last post
  2. Best way to clean electric motor windings

    Started by Doug W, 11-20-2019 08:40 PM
    black, clean, motor, thrown, windings
    • Replies: 15
    • Views: 503
    11-21-2019, 10:34 PM Go to last post
    • Replies: 0
    • Views: 89
    11-21-2019, 06:36 PM Go to last post
  3. Transformer size question-conflicting info?

    Started by CLANG, 05-24-2011 04:44 AM
    • Replies: 14
    • Views: 2,304
    11-21-2019, 03:13 PM Go to last post
  4. Can I use a 1.5kW or 2kW VFD for a 0.6kW load?

    Started by ballen, 11-19-2019 11:50 AM
    230v, inverter, max, motors, nameplate
    • Replies: 5
    • Views: 246
    11-21-2019, 11:13 AM Go to last post
  5. RPC Panel -- Which manufacturer?

    Started by Grenade, 11-21-2019 02:18 AM
    converters/panels, manufacturer, panel, rpc, throw
    • Replies: 1
    • Views: 163
    11-21-2019, 11:10 AM Go to last post
  6. Testing 3 Phase Motor Windings

    Started by TravisR100, 11-17-2019 01:21 PM
    3 Pages
    1 2 3
    ohms, resistance, result, tied, windings
    • Replies: 40
    • Views: 1,351
    11-21-2019, 01:08 AM Go to last post
  7. 550 Volts for a 380 Volt lathe

    Started by Tipsy, 11-19-2019 12:01 AM
    • Replies: 8
    • Views: 445
    11-21-2019, 12:14 AM Go to last post
  8. Reversing an old hand drill

    Started by Pappanick, 11-19-2019 05:25 PM
    110v, drill, hand, single, speed
    • Replies: 2
    • Views: 219
    11-20-2019, 06:07 PM Go to last post
  9. Successful Miller CP300 Welder Haas-Kamp Single Phase Conversion

    Started by ksimolo, 07-18-2013 09:07 PM
    2 Pages
    1 2
    • Replies: 25
    • Views: 21,001
    11-20-2019, 01:14 AM Go to last post
  10. phase converter quieter when vertical...

    Started by hahnpv, 11-16-2019 03:59 PM
    • Replies: 13
    • Views: 798
    11-19-2019, 12:01 PM Go to last post
  11. Help, What is this? Phase generator?

    Started by EarlF, 11-07-2019 02:57 PM
    • Replies: 15
    • Views: 891
    11-17-2019, 10:45 PM Go to last post
  12. Mill Motor Runs on Line Power 3P/240VAC But Not on VFD - Why???

    Started by everettengr, 10-17-2019 02:34 PM
    3 Pages
    1 2 3
    • Replies: 57
    • Views: 3,412
    11-16-2019, 06:08 AM Go to last post
  13. Found a lathe with a bum motor - motor replacement viability?

    Started by Pyrex, 10-29-2019 10:06 AM
    2 Pages
    1 2
    • Replies: 35
    • Views: 2,112
    11-15-2019, 08:07 PM Go to last post
  14. Overload Sizing and FLA when using RPC

    Started by *D'B=6bk, 10-17-2019 02:33 PM
    2 Pages
    1 2
    • Replies: 25
    • Views: 1,549
    11-14-2019, 09:29 PM Go to last post
  15. Motor Contactor for Rotary Convertor/5 HP lathe

    Started by rhoward, 03-13-2016 01:38 AM
    • Replies: 13
    • Views: 3,722
    11-13-2019, 07:57 PM Go to last post
  16. harig 612 surface grinder vfd recomendation?

    Started by reddogforge, 11-08-2019 10:58 PM
    consideration, harig, machine, motor, vfd
    • Replies: 2
    • Views: 289
    11-13-2019, 07:48 PM Go to last post
  17. Are VFD's bad for motors?

    Started by DennisCA, 11-05-2019 02:48 AM
    3 Pages
    1 2 3
    • Replies: 45
    • Views: 2,415
    11-12-2019, 12:42 AM Go to last post
  18. 460v 3phase for a VMC with 240v 1ph?

    Started by Agfrvf, 10-17-2019 01:15 PM
    20hp, 240v, 460v, motor, vmc
    • Replies: 12
    • Views: 1,029
    11-10-2019, 07:59 PM Go to last post
    • Replies: 5
    • Views: 488
    11-09-2019, 08:13 PM Go to last post
  19. Citizen Cincom F12 3 Phase Power

    Started by LIFTED, 11-08-2019 06:17 PM
    • Replies: 1
    • Views: 305
    11-08-2019, 06:18 PM Go to last post
  20. 3 Phase Service Choice?

    Started by silencerman, 11-07-2019 03:31 PM
    delta, leg, service, shop, transformer
    • Replies: 3
    • Views: 465
    11-08-2019, 01:17 AM Go to last post
  21. Breaker/wire size for hard starting 3 phase motors

    Started by Fish On, 11-07-2019 02:06 PM
    amp, motor, phase, starting, wire
    • Replies: 5
    • Views: 327
    11-07-2019, 03:55 PM Go to last post
  22. Pro VFD guys, lets figure out this Yaskawa 626VM3

    Started by huleo, 12-28-2018 02:37 AM
    charge, drive, immediately, power, powered
    • Replies: 5
    • Views: 1,057
    11-07-2019, 11:54 AM Go to last post
  23. RPC safe/acceptable imbalances?

    Started by rpseguin, 11-04-2019 02:57 PM
    leg, voltage, side, high, rpc
    • Replies: 4
    • Views: 456
    11-07-2019, 05:04 AM Go to last post
  24. On dressing contacts

    Started by 9100, 11-04-2019 08:41 PM
    contactor, contacts, filed, left, making
    • Replies: 18
    • Views: 910
    11-06-2019, 08:58 PM Go to last post
    • Replies: 6
    • Views: 435
    11-05-2019, 11:35 PM Go to last post
  25. Adding VFD to Webb/Whacheon/Mori Seiki?

    Started by rpseguin, 11-04-2019 02:43 PM
    vfd, spindle, adding, motor, webb/whacheon/mori
    • Replies: 5
    • Views: 375
    11-04-2019, 07:58 PM Go to last post
  26. Likely component fault on Powerflex 4 VFD?

    Started by gadget73, 04-20-2017 09:48 AM
    fault, fix, powerflex, time, vfd
    • Replies: 11
    • Views: 13,333
    11-04-2019, 06:50 PM Go to last post
    • Replies: 18
    • Views: 1,144
    11-03-2019, 11:36 PM Go to last post
  27. RPC Wiring question

    Started by alienturtle, 05-15-2019 01:02 PM
    • Replies: 6
    • Views: 951
    11-02-2019, 02:43 PM Go to last post
  28. VFD wired to mill circuitry

    Started by hahnpv, 11-01-2019 05:18 PM
    mill, reason, separate, starter, vfd
    • Replies: 3
    • Views: 418
    11-01-2019, 08:04 PM Go to last post
  29. Rotary Phase Converter Questions

    Started by Kevin T, 09-20-2019 07:00 PM
    2 Pages
    1 2
    • Replies: 32
    • Views: 1,815
    11-01-2019, 04:26 PM Go to last post
  30. VFD vs RPC for compressor

    Started by PTSCummins, 10-28-2019 10:47 AM
    • Replies: 13
    • Views: 868
    10-31-2019, 09:15 PM Go to last post
  31. CNC grade converter

    Started by Bob-J-H, 10-28-2019 05:54 PM
    cnc, compared, converter, grade, regular
    • Replies: 5
    • Views: 592
    10-31-2019, 06:39 PM Go to last post
    • Replies: 12
    • Views: 698
    10-31-2019, 10:16 AM Go to last post
    • Replies: 6
    • Views: 738
    10-29-2019, 01:54 PM Go to last post
  32. Phaseconverterusa.com

    Started by Dpelkowski, 10-22-2019 09:30 PM
    message, order, response, update, yesterday
    • Replies: 5
    • Views: 783
    10-29-2019, 11:07 AM Go to last post
  33. very old motor wiring

    Started by jordanirvin, 10-27-2019 02:53 PM
    • Replies: 5
    • Views: 503
    10-29-2019, 08:16 AM Go to last post
  34. Run caps as starting caps for rotary phase converter ???

    Started by Lock 45, 10-27-2019 03:18 PM
    2 Pages
    1 2
    bank, caps, phase, run, wire
    • Replies: 20
    • Views: 995
    10-29-2019, 05:09 AM Go to last post

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