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  • Users: pqsl
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  1. pqsl

    Grounding Resistance in Arctic

    Hi, I am looking for guidelines / information or any help related to ground resistance measurements and also ground resistivity measurements. Looks like this topic was not discussed in this forum. Any experts on this topic?
  2. pqsl

    Thermostats low temperature range

    I am looking for industrial thermostat to be able to sense ambient air temperature less than 20Deg. F (accuracy is not important) with dry NO or NC contacts. There is no problem to find 30Deg. F. Any suggestions here without using 4-20ma or external power?
  3. pqsl

    Logarithmic scale in Autocad.

    I am looking for another way to see if AutoCad environment can display values in base 10 logarithmic scales to use with Logarithmic graphs. I wrote small AutoLisp program that actually works but that was in 1994. Does anyone know if there is another way?
  4. pqsl

    TVSS Delta or Wye.

    Which TVSS is appropriate to use on 600/347V MCC? Transformer feeding this MCC is has neutral solidly grounded at MCC. Neutral bus is not available to connect TVSS. Ground bus is available to connect TVSS. 1. Delta TVSS is connected to the above MCC. What are the advantages and...
  5. pqsl

    Power Disturbances

    I am doing research on aspects of power distribution line operations in US and Canada. The distribution lines I am interested in are in the range of 10 kV (line to line) to 110 kV. I am looking for information on the number of interruptions per year typically due to faults from lightning, tree...

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