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
CEB,
1523The 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 ?
2390explain which quantities change in the starting and the and the running condition in induction motor
1513what is a composite error in current transformers, why occurs & in which it will occur i.e, either metering ct/ protection ct
1921Why open circuit test of transformers is conducted at rated voltage??Why not any other voltage??
1732Post New Electrical Engineering Questions
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 ?
What is the effect on in Zone and out zone fault if Phase side CT is Vk/2<30 mA and Neutral side is CT is Vk/4<30 mA for Transformer REF protection
In three pin plug 6 amp. 220V ac rating. Why earth pin diameter is higher than other two pin? What its purpose ?
there are cam operated switches - why we call cam operated , What is cam ?
why we need to us lenz's law for synchornous motor
Dear Mr B C pal...Can you plz. put some light on principle of operation of Z-Ct in conjunction to its use with 1Cx1000Sqmm HT Cables & Directional Ground Fault / Over Voltage Relays...Regd..Parag v K 9899115632
how to calculate distance between busbar supporters for LT panel, what are the factors influencing in this design
Wind mill
i want design of D.C.MOTOR 1HP 960RPM AND 2HP 960RPM ITS URRGENT
please send me RRB electrical engineer previous year questions for Sr. Section Engineer
Which power will flow first if we switch on a motor Active or Reactive? How?
HAI SENT HPCL APTITUDE QUESTION PAPER, MY EMAIL ID IS angus_eee04@rediffmail.com,angus_eee04@yahoo.com
What is synchro?
what questions are asked in the interview for the post of an electrical maintenance engineer in FMCG companies?
can we use engine degreaser for electrical motors?