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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.
2184Hi 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 3998During 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 3187When 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 4046i 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 5362CONSIDER 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 5383What 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)
1922Post New Electrical Engineering Questions
UG cable sizes were specified in sqmm. But practically its not coming to mesure. What's the reason for that? And how they specify the size of the cable?
How many turns are there in primary winding? (In Transformer)
what are the principles of a booster converter?
what is meaning of 230volts ac 50hzs ac supply is it rms or maximum to getting ac 230v what amount of max voltage they will send
explain with diagram how to protect transformers and substations from over current with help of CT's?
how copper and aluminium wires or cables are choose for current rating? please provide copper and aluminium wire selection chart for different current rating ?
Is any AC drive(VFD) had a feature of DC injection braking? if available please mention the detail. i.e drive can supply braking torque when the motor in idle state.
can any one provide me a connection wiring diagram for a DG set control panel along with BOM?
why we can stote dc? why we cant store ac?
DG cranking voltage?
Do you need any help with FEWA Electrical Supervisor exams?
Two electric lamps 40 W, 220 V each are connected in series across 220 V. What is the power consumed by the connection?
Draw a SLD of HT distribution EB grid up to users Transformer?
at what base you will tell the direction of rotation of dc motors and generators?
how much GROUND & NEUTRAL VOLT maintain in data center.
