What is the need of earthing transformer for delta side of a transformer. (Think of a line section between a star/delta transformer at a grid substation and delta/star transformer at a village. An earthing transformer is there at the delta side of the star/delta transformer at grid substation). As there are no ground reference there will not be fault current if a one phase is grounded. Further L-L phase will be sensed by the primary side of star/delta transformer as a L-G fault. So why an earthing transformer is required at delta side
Control wiring of a dol starter for forward and backward579
The efficiency of a 100kva transformer is 0.98 at full load as well as half load , for this transformer what is the Copper loss at full load ?935
explain which quantities change in the starting and the and the running condition in induction motor552
what is a composite error in current transformers, why occurs & in which it will occur i.e, either metering ct/ protection ct749
Why open circuit test of transformers is conducted at rated voltage??Why not any other voltage??654
How can we convert 11 kv to 440 volt without using transformer ?646
Why auxiliary transformers are not connected in parallel in primary stations?560
What are IR values and what it should be for coil and for insulator
Please tell me the earthing procedures adopted for the STAR-STAR 3 Phase transformer in india and give a better sugession for earthing
Explain the functioning of diode?
Name the test signals used in control system
If two Transformers are connected in parallel having impedance of 50KA in both transformers will the impedance increase or decrease after connecting transformers in parallel?
dear sir, i completed diploma in electrical in 2005, how i can get electrical supervisor liance in mumbai
Stator of 3-phase IM has 3 slots per pole per phase. If supply frequency is 50 Hz, calculate the speed of rotating stator flux A 1000 rpm B 500 rpm C 1500 rpm D 1440 rpm
What is the function of under voltage release ?
Why have to use copper cable for local isolator to motor ?
What is vaccum currcuit breaker.define with cause and where be use it device?
What is mathematical model of a control system?
While HT line put on to activate ACB in low tention panel VCB tripping instantly.why it happens
what is the question paper model for section engineer in RRB
How can ou verify the size of conductor 50Sq.mm ACSR
i have to install a HT panel, what components, I have to use in this and what will the diagram of that diagram,please tell me each and everything.