Search results

  1. E

    250VDC Line, Transient detection

    Any of you guys know of any instrument to record both the DC and at the same time the AC transient of a DC line. Thanks.
  2. E

    Temperature Controller

    Thanks of the Reply. you see just for the sake of analogy, if someone asks about what to look for in selecting an electric motor, I would answer RPM, current, Voltage,Frame, HP, I am looking for similar answer, but using Temp Controller instead of the electric motor. I know 2 so far that are...
  3. E

    Temperature Controller

    this was dumped on me today, the original controller was "ripped" for the application (industrial heating pad), long time ago. so there is no way to know which one goes where, meaning that no documentation what so ever of which wires go to the RTD, control, and power... is available. I am...
  4. E

    Temperature Controller

    I am trying to replace a Temp. Controller that is no more produces anymore. What are the controller properties/settings/ that I have to pay attention to. in another word, what to select a temp controller for certain application? Thanks.
  5. E

    250 VDC motor

    Jim, That was actually the case. By the end of the day on Thursday one of the electrician reported the situation. when I checked it on Friday morning, as well as few other times during the day, it was right on the money. When reviewed the Situation with the electrician, he stated that he was not...
  6. E

    250 VDC motor

    thanks for the replay, and that's what baffled me, the speed looked unchanged!
  7. E

    250 VDC motor

    Thanks for the reminder, I used the wrong word, and it is not current the Voltage reading instead of being around 250VDC, it was around 390VDC
  8. E

    250 VDC motor

    A 250 VDC motor drawing 390 VDC!!!! any one with any explanation? Thanks.
  9. E

    DC Amp Gauge Vs. AC amp Gauge

    That's what I said the went to that Substation Room, it is a iron steal plant. and the gauges are after the DC side of the rectifier. I believe it was just inexperienced electrician mistake! thanks Jim for all the info
  10. E

    DC Amp Gauge Vs. AC amp Gauge

    Thanks Jim for the detailed replay you were right, that is a switchgear room. and for the breakers addressed earlier they're fed from different rectifiers (250VDC, 1000KW) that are directly fed different 11.5KV. The 250 VDC mainly feeds some crane and some big DC motors (old old company)
  11. E

    DC Amp Gauge Vs. AC amp Gauge

    Thank Him for the Replay I attached pictures reflecting the above situation. what's the reasoning behind that gauges difference in terms of their fabrication. More explicitly why DC gauge won't read the AC or at least the RMS value Thanks again
  12. E

    DC Amp Gauge Vs. AC amp Gauge

    I was walking around at work today to find an AC amp Gauge on a DC breaker (1000KW, 250 VDC), Which made me scratch my head if there is any difference between the two gauges for this application? Any idea? Thanks.
Top