In a HT switchboard where Nos. of Transformers are connected, how to decide Incoming cable size? Whether Cable should be rated for connected load or maximum demand?
1 6187WHaT IS THE CONCEPT OF INDUCTION LAMPS IN MODERN LIGHTINGS, and HOW IT WORKS TO EMIT LIGHT ( AS NO ELECTRODES ARE PRESENT ) ?" COULD INDUCTION LAMPS CAUSE INTERFERENCE WITH COMUNICATIONS INTO A STORE USING INDUCTION LIGHTING ? WHAT IS THE BENEFIT OF USING THE LOW FREQENCY INDUCTION LAMP , VERSUS LED , AND VERSUS FLUORESCENT, AND VERSUS ANOTHER KIND OF LIGHTING . THANK yOU MOISES GUINDI
2042why we use the fuse in only one wire? althrough in ac current the current flows in both directions. why the neutral wire can be taken half the magnitude of phase wire while same current returns from neutral wire?
Bhel,
2 5058Role of active and reactive Power sharing in between two synchronized Generators, Droop Setting role ?
1716Post New Electrical Engineering Questions
Bimetal strip used in overload relay what is that,which types of material used for that & percentage.
i want wipro vlsi placement pattern please send me
How eddy current generation support the idea of train braking?
What are the characteristics of negative feedback?
Sir, My doubt on cable sizing calculation, Load:74 KW calculated cable 1 run 50mm2. Now client asking us to reduce cable size by increasing runs. Sir, My question now when my mind strikes with 2 options 1) Divide load 74/2 = 36 and calculate cable for 36+36 making it 2 runs or 2) Simply i can divide 50mm2 /2 ie. 2 runs of 25mm2 Please suggest me sir
My question is whether bellow formula is correct to find bus size for 46kA for 0.5 second & what is RT in bellow formula. formula to calculate the size of busbar to withstand the thermal stresses due to currents with duration of 0.2 sec to 5 sec. Sp = RT( I x I x t) / K Where Sp – is the cross sectional area of bus bar in millimeters. I - is the value of AC fault current. t - is the operating time of disconnecting device in seconds. K – is the factor depending on the material of the conductor, insulation and initial and final temperature. Value of ‘k’ for copper is 143.
explain why core loss of a transformer is almost constant under different load conditions when connected across a constant voltage and constant frequency.
harmonics filter
difference between ac series and parallel circuit
what is the size of cable for 15kw motor and 85 meter cable length using with vfd
If only R Phase is connected in 2 pole elcb, n is not connected than it will work or not in ground fault.
what is maxemo work permit procedure
How to calculate multiplying factor of dc energy meter
What does quality factor depend on in resonance?
Refernce currents are to be generated using refernce cueernts how can this be done??