What is x/r ratio?

Answer Posted / raj prasan

X/R ratio is reactance to resistance ratio, which is used to determine the peak asymmetrical fault current. Higher the X/R ratio, higher is the asymmetrical fault current

Is This Answer Correct ?    0 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Apparent power is expressed as V * I(Conjugate). Why not in V * I ?

3463


why u r living from presentaly working.

1975


if we run a 3 phase machine on two phase what will happend??? given answer with solid reason please

1606


What is phenomenon of electromagnetic induction and how it works?

630


What is the use of bundle conductors?

635






What do you mean by power transformer?

655


why star point of HT motor not earthed?

1753


what is meant by 3rd hormonics ?

1410


What are the conditions for sustained oscillator or what is backhouse criterion?

655


Either the Armoured Earthing strip of HT 3 core cable have to pass through CB CT or not , why ???

1562


derive DC RMS value for half wave rectifier?

2724


What is UPS and How do you maintain the UPS Maintenance? Brief Description on UPS maintenance.

2145


In our plant we have installed new MCC with ELR and CBCT which is detecting some leakage current in the system but it leading to some confusion when to check that in which feeder which is drawing current we put off the whole panel itself but still CBCT detecting some leakage current so can anybody ans me , where i am going wrong or how to detect whether its actual leakage or CBCT malfunctioning.

1719


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?

1372


what is the best transformer oil breakdown voltage?

730