In a 3 phase 4-wire system. For a 3.5 core cable if all loads are single phase and balanced, what will be neutral current? will it be sum of all phase currents? Or it will be zero? And if loads are unbalanced what will be neutral current?
1715What are IP protections used for electrical panels, JB, equipments installed in explosive zones like Petrochemicals, Oil & gas
1 3072In my 3 phase 4 wire electrical system N to earth voltage is 0.08 is it ok What is standard for it ?
1 2240What are the difference between normal application Transformer and Solar application Transformer?
1661What is the possible cause for failure of lightning arrestors in outdoor substation under normal condition
1777Post New Electrical Engineering Questions
why star point of HT motor not earthed?
What are the section criteria for cables. Now everywhere XLPE power cable is used or PVC is also used?.
Safety of on line ups
describe the A.C. Generator Testing procedure
how can i find ct ratio of meter by seeing name plate of meter and how it should be used in MF calculation if it shows only-/1???
What is the ratio of Booster transformer?
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?
describe the fully control circuit diagram of ac drives
How many types of probe used in cro?
Installation method of self treated earth electrode.
What is the vector group of a transformer,how can it be found out?
What are the different types of controllers?
please anybody help me to find out the BHEL trainee Exam previous year questions papers . if u ve pls. send it to surekhared@gmail.com
How to Preparation of online test
How do you compute voltage drop and cable size over distance?