Machine-translated by Google. Questions are authored in English.
Top

Discussion

A power analyser shows 40 kW on a feeder whose nameplate loads total 90 kW. The likeliest explanation is

  • A.much of the connected plant is idle or lightly loaded
  • B.the analyser has been connected with reversed polarity
  • C.the nameplate figures are in kilovolt-amperes rather than kilowatts
  • D.the harmonic content is depressing the reading

Answer: A

Connected load and actual demand routinely differ by a factor of two, since machines idle, run part-loaded or stand still. That gap is often where the audit's opportunity lies, and it is why the nameplate total is never used as a consumption figure.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.