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why any Elelctricity board insist not to change the buren of their metering CTs or PTs for metering purpose? as a example elect. board not accepted that any customer change their metering CT or PT core burden from 5VA to 15VA.. why?
1 4124hi there i am highly enthusiastic about discussing electrical concepts , and hence i wud lyk to invit al do intrested to join me at gtalk and hav a dscussun of the concepts , ad me as a freind . my email id is rakesh.2k99@gmail.com
1 2160why the altrnator(AVR) not showing the any voltage after making the new winding and insulation?
Avon,
1 3578Post New Electrical Engineering Questions
Why do you have to use Protecion relay with the function MTB ( Mechanical Trip Button ) for electrical system.
How To increase Knowledge Of boliler regarding To Only Electrical Field..
What is sensitivity of a measurement?
What is the basic rule for block diagram reduction technique?
what is the purpose that we use PLC system in power system
When color of silica gel will gets change from blue to pink from Top to bottom?
why single phase to grd test in HV cable?why not 2 phase at a time?
how can calculation ate Amps for cabel. Ex-for 1sqmm wire hou many amps we can draw
why is control bus bi-directional?
How to dimensioning SDCCH, LAPD and CS7 signaling on GSM?
What range of speed can you get with the field control method of speed control of d.c. Shunt motor?
why the neutral point in connnection oscillates?
can indirect loading be called as phantom loading?
Dear all, I just want to ask an expert on this forum for some insights. For the magnetic balance test, when applied voltage on a Delta-Star transformer e.g. Dyn11, the following relationships apply for HV side: 1. H1-H2 = H2-H3 H3-H1 2. H2-H3 = H3-H1 H1-H2 3. H3-H1 = H1-H2 H2-H3 For the LV side also: 4. X1-X0 = X2-X0 X3-X0 5. X2-X0 = X3-X0 X1-X0 6. X3-X0 = X1-X0 X2-X0 Is there a similar pattern for Y-d, Y-Y, D-d? And how about Y-z, D-z, Z-y transformers? I've tested a YNzn5 transformer and for LV side I don't see the pattern. In this particular case I got for LV side the following (see values below): H1-H0 H2-H0 H3-H0 X0-X1 X0-X2 X0-X3 128.0 119.9 7.2 29.2 13.3 15.8 70.7 128.4 59.2 23.4 22.0 3.6 7.2 120.1 128.1 13.4 29.3 15.8 What is the relationship here for LV? For row 1 I see the relationship, for row 3 I also see but it's shifted, but for row 2 I don't see such relationship. Any suggestions, answers, someone?
how to maintain frenquncy with syncronising sub-station for distribution
