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Tag: vfd

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    • Replies: 22
    • Views: 1,125
    Last Post: 04-18-17 03:59 PM
    by Jraef  Go to last post
    • Replies: 7
    • Views: 388
    Last Post: 03-24-17 07:01 PM
    by Jraef  Go to last post
  1. VFD or not to D....that is the question

    Started by Open Neutral on 01-13-17
    4 Pages
    1 2 3 ... 4
    milling machine, vfd
    • Replies: 38
    • Views: 2,353
    Last Post: 02-17-17 01:37 PM
    by Electric-Light  Go to last post
    • Replies: 1
    • Views: 633
    Last Post: 12-08-16 11:31 AM
    by tom baker  Go to last post
  2. Variable Freq. Drives on Hazardous Location motors.

    Started by voltairzap on 11-30-15
    hazardous locations, vfd
    • Replies: 1
    • Views: 1,494
    Last Post: 12-01-15 12:18 AM
    by rbalex  Go to last post
  3. Calculation of MCC loads with FVNR and VFDs

    Started by Oly on 09-30-15
    mcc sizing, vfd
    • Replies: 0
    • Views: 1,158
    Last Post: 09-30-15 03:03 PM
    by Oly  Go to last post

    Forum:
    NEC

    • Replies: 2
    • Views: 2,018
    Last Post: 09-30-15 03:40 PM
    by Oly  Go to last post
  4. All my VFD's are tripping on Over-voltage

    Started by csc_wyo on 08-10-15
    2 Pages
    1 2
    harmonics, over voltage, powerflex 753, vfd, vfds failures
    • Replies: 15
    • Views: 3,459
    Last Post: 08-18-15 08:12 PM
    by kwired  Go to last post
  5. Integral Unit (Chiller w/ VFD) Input Conductor Sizing

    Started by NoVA Comms Power on 01-15-15
    2 Pages
    1 2
    • Replies: 19
    • Views: 3,835
    Last Post: 01-19-15 09:31 PM
    by tesi1  Go to last post
  6. Constant Pressure VFD on well tankfill application

    Started by Open Neutral on 01-12-15
    6 Pages
    1 2 3 ... 6
    pump, vfd
    • Replies: 53
    • Views: 8,468
    Last Post: 01-19-15 10:51 AM
    by kwired  Go to last post
  7. VFD Input I less than Motor FLC? SKM Analysis kVA Out > kVA In?

    Started by smoothops10 on 08-27-14
    2 Pages
    1 2
    • Replies: 10
    • Views: 4,959
    Last Post: 08-28-14 01:49 AM
    by Besoeker  Go to last post
  8. VFD Line-side Snubbers

    Started by beanland on 02-17-14
    bridge, diode, drive, snubber, vfd
    • Replies: 2
    • Views: 2,145
    Last Post: 02-17-14 05:26 PM
    by Jraef  Go to last post
  9. 2 Motors with VFDs (2) on 1 breaker

    Started by bnbowen@uiuc.edu on 02-02-14
    motor, vfd
    • Replies: 7
    • Views: 4,725
    Last Post: 02-03-14 10:38 PM
    by kwired  Go to last post
  10. VFD motor drive harmonics vs. grid-tied inverter

    Started by tfrsolar on 02-14-13
    grid-tie, harmonics, vfd
    • Replies: 4
    • Views: 3,450
    Last Post: 02-15-13 12:44 PM
    by tfrsolar  Go to last post
  11. VFD surge protection?

    Started by jmjr55 on 09-13-12
    surge protective device, very fast acting fuses, vfd
    • Replies: 6
    • Views: 8,389
    Last Post: 09-18-12 08:37 PM
    by robbietan  Go to last post
  12. Large HP VFD output on switcboard bus

    Started by jtrezon on 02-21-12
    2500hp, 690v, m-g, vfd
    • Replies: 1
    • Views: 2,292
    Last Post: 02-21-12 12:02 PM
    by Jraef  Go to last post
  13. Oversized VFD / 430.122(A) violation

    Started by Steamdonkey2011 on 12-20-11
    430.122, oversized, vfd
    • Replies: 6
    • Views: 6,013
    Last Post: 12-20-11 08:12 PM
    by Cow  Go to last post

    Forum:
    NEC

  14. VFD Rated Cable in Tray

    Started by mike.eng.urs on 10-18-11
    cable, drive, frequency, nec, vfd
    • Replies: 0
    • Views: 2,689
    Last Post: 10-18-11 10:59 AM
    by mike.eng.urs  Go to last post

    Forum:
    NEC

  15. Breaker Sizing for motors with Soft Starters and VFD's

    Started by montericci on 09-08-11
    breaker size, soft starter, vfd
    • Replies: 3
    • Views: 18,469
    Last Post: 09-21-11 10:17 AM
    by petersonra  Go to last post
  16. Shielded 600V Feeder Cable

    Started by Breaker19 on 04-25-11
    harmonics, shielded feeders, vfd
    • Replies: 3
    • Views: 3,956
    Last Post: 05-12-11 09:43 PM
    by jdsmith  Go to last post
    • Replies: 1
    • Views: 4,061
    Last Post: 02-27-11 01:39 PM
    by iwire  Go to last post
  17. Options on a VFD

    Started by Open Neutral on 02-03-11
    4 Pages
    1 2 3 ... 4
    480v, vfd
    • Replies: 30
    • Views: 14,051
    Last Post: 02-08-11 11:41 PM
    by Open Neutral  Go to last post
    • Replies: 7
    • Views: 4,775
    Last Post: 09-23-10 04:50 PM
    by steve66  Go to last post
  18. Instantaneous Trip Circuit Breaker and VFD

    Started by nc_mac on 07-20-09
    mcp, vfd
    • Replies: 2
    • Views: 4,086
    Last Post: 07-20-09 11:48 AM
    by weressl  Go to last post

    Forum:
    NEC

  19. VFD Breaker Tripping

    Started by tmacdonald on 04-20-09
    3 Pages
    1 2 3
    breaker, trip, vfd
    • Replies: 25
    • Views: 16,997
    Last Post: 04-25-09 02:46 AM
    by Besoeker  Go to last post
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