Interested to Buy Any Domain ? << Click Here >> for more details...
5MVA TRANSFORMER SUDDENLY FAIL WITH THE PRV TRIPPING AND
LARGE AMOUNT OF OIL SPREAD OUT? SO IT CAME BACK WITH THE
REPAIRING WITH REASON THAT IT FAILS BCOZ OF TRANSIENT
EFFECT? SO PLZ EXPLAIN HOW DOES IT HAPPENED?
- 1 Answers
- 4281 Views
- I also Faced
- E-Mail Answers
Answer Posted / k.prakashchandra
The insulation failure was detected and it was attributed to
high transient voltages.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
How to operate a ac chilar plant?
why the pf of semiconductor device is improved the electrical devices
i am trying to PSUs/govermeant jobs since last 2 years but still i m not success, plz help me.
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?
why most of junction box vendors providing T5/T6 Temp class jb's for T3 area any special reason?
how solar power plant energy meter multiplication factor
why Current is lead 90 degree and voltage is lag 90 degree in a capacitor.? why Current is lag 90 degree and voltage is lead 90 degree in an inductor.?
2- What are the percentages between excitation currents in phase (R, S and T) in ∆ and Ỵ connections in excitation Current test in transformers?
Why does the Solid state Rectifiers for 3-ph brake motors sometimes have 2 & sometimes 3 output terminals?
How many energy meters can be connected on a 15VA Voltage transformer. please send a calculation sheet.
what is feed back and what are feed back amplifiers?
What are the difference between CT/PT operated Meter and RRAMR Meter for HT/LT application?
what is class of SPD and dittels of all class ?
Explain (in simple ) - root mean square. whats its role in electrical fundamandal.where its used
Diagram and details of polarity test for Current Transformer 11kv 400/200/100/1A
