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Hi My dear all Friends, There is a question regarding HVAC Engineering and widely used in Power Projects. Question- What is the diffrence Between REF, SEF and Differential Protection....???? Where REF - Restricted Earth Fault SEF - Senstive Earth Fault.
2181Hi My Dear All Friends, There is one question it is widely used in Power Project's High Voltage Engineering. Question- What is the diffrence between Earth fault and Back up Earth Fault....???? . . . . . . Have A Good Day
1 3992During Load testing of battery charger with temporary AC Generator .When reach 70% load Generator immediately shutdown .we could not able to Recognize ,what is exactly problem .Please kindly clarify us
1 3182When we are working on transformer(132\11KV). we are going to isolate the transformer from both HV side and LV side. then we are applying grounding on both side. My question is that we required to isolate the VT which is still connected from secondary side.?
1 4045i am iti student i have project to do. that IS 100MW 220\33KV SUBSTATION I WANT TO KNOW HOW TO START, LIKE CALCULATION, WHAT RATING OF CT,CVT, PT, ISOLATOR LIGHTING ARRESTER WAVE TRAP CIRCUIT BREAKER IN 22OKV SIDE, ALSO TO WARDS 33KV SIDE PLS HELP ME WITH THIS, THIS MY LIFE NOW, I KNOW AUTOCAD, I LIKE TO KNOW HOW TO CALCULATE ALL THE THINGS
3 5350CONSIDER A 415V/200V STEP DOWN TRANSFORMER.CAN WE USE USE IT AS STEP UP TRANSFORMER BY GIVING 200V IN SECONDARY AND TAKING OUTPUT FROM PRIMARY?
3 5376What should be the magnetic balance test values for a 3 phase delta/star connected single primary dual secondary winding transformer (90 MVA / 2 X 45 MVA TRANSFORMER)
1918Post New Electrical Engineering Questions
what is the ATS .And how it works.
We have 110Vac ,10A ac supply which is converted into 110VDC & How much DC current? which factor is reqired for dc current calulation?
132/6.6ππ πππππππππππ πππππππ πππ πππ πππππ πππ πππππππππ. πΈ'ππ πππππππ πππππππππππ ππ 6.6ππ/415π πππ πΈ πππππππ πππππππ ππ ππππ πππππ πππ ππ ππ 13/6.ππ πππππππππππ?? πΈπ π½π.. ππππ π ππ’??
WHY L-G FAULT IS MORE SEVERE IN TERMS OF RRRV?
how do i work out the Amps of a incommer if i am running 1 37 KW motor and a 0,75 KW motor and some solinoids
I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?
Explain marx circuit.
I have iti elec, 1st aid, and 5 yrs experience in 7.5 mw power plant. Am i eligeble for 11kv license in telangana state..when, how to apply for that.?
CAN CU XLPE/PVC CABLE BE USED INPLACE OF LOW NOISE SCREENED CABLE? KINDLY GIVE REASONS
How to select batteries required for ups and the inverter if we Known load? And how AH is selected of battery?
i am completed diploma in ece,and working in ht and lt lines.so is elligible diploma in ece for get electrical C Licence?plse give ur opinion?
what are the assumptions made in swineburne's test?
how to measure the transformer resistance values(dyn11)?and howmuch the minimum value?
is the value of inductance depends upon the value of thitha in doubly excited machine??
I am designing new project sub station with 220 kV / 11 kV, 40 MVA capacity. This project have many recifier sets, which can generate 3rd harmonics. Now I have to select vector group of This transformer. To minimise 3rd harmonics, what care should I take in selection of Transformer Vecrtor group? If it is Y-Y with open Delta tertiary then what should be the rating & voltage of Tertiary Winding?
