GRRRR!!!
Just venting! Tried this morning to find technical and info, part number, etc., on bus duct plugs for an existing ITE XL Universal bus duct. Couldn't find any technical info online. Then called the "local" number in an attempt to speak to a technical representative. Spoke to a...
What kind of loads are being used? Are there lots of motors? What type of lighting fixtures? Are the phases balanced? I have been told that sometimes balancing the phases will help improve the power factor.
Margaret
Powerlineguy: How much of the actual load for the new machine shop is actually required to be at 120-240 3 phase delta? 20%, 30%, or ?
The lighting and HVAC stuff and receptacles for maintenance and office type usage would probably most likely be okay at 120/208v 3ph 4w. What I have done in...
Navitech: Is the existing wiring colour coded in relation to the phases?
If so, some electrician in the future could possible be confused if you combine two circuits that were originally on phase A and phase B into one circuit on phase A. Especially in the case if the wiring was done with...
lengould: I just spent a while searching on the internet to see if I could find information about Ontario's generating capacity.... with the result that I will freely admit that I am confused. Some web sites put forward the notion that Ontario has enough generating capacity... while others...
lengould: I just opened some of the individual diagrams for Hydro Quebecs schematic.
You are correct, they are using DC to AC convertors, etc.
I knew that that was how the lines from up North operate... because of the very long distances involved... and now have found out that that is...
Modula2: I checked out the Hydro Quebec web site and found a lot of information about their transmission to other areas, but haven't found any thing about that deliberately out of phase whatever... as of yet.
Here is a link to their path diagram for metered interchanges...
kiribanda: Like GerH mentioned, load shedding and load management can have lots of different meanings. Are you trying to keep down energy costs? Are you trying to avoid an overload during a black out? Are you trying to avoid an overload even when connected to the utility? Or are you trying...
I just did an internet search for information on the reactive margin methodology that SidiropoulosM mentioned. Found this techical paper that relates low inertia compressor motors for air conditioning, heat pumps and refrigeration, electronic power supplies, higher transmission and increasing...
You guys have got me to resort to looking at text books, etc. Which is good, eh. :)
I also did some searches on the internet and found this. I find tripping in relationship to the rate of change for frequency criteria interesting...
Okay... so I am typing impaired....
Meant to say .... so as long as the power factor is above 90%, whomever is paying the utility bills does NOT care.
Margaret
have been sitting here pondering the subjects of power factor and harmonics, etc.
The types of loads in buildings has really changed over the last few decades. We got lots and lots of computers. Offices used to run about 2w/sqft and now they often run at about 4w/sqft, or more.... because...
fundam: I will admit that I checked out the records for sun spot and solar wind activity a couple of days back. :D
Didn't look like anything unusual was happening on the 14th.
Also, by my understanding, solar activity is more likely to affect transmission lines in the far north... like the...
