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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,
1453The 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 ?
2335explain which quantities change in the starting and the and the running condition in induction motor
1440what is a composite error in current transformers, why occurs & in which it will occur i.e, either metering ct/ protection ct
1854Why open circuit test of transformers is conducted at rated voltage??Why not any other voltage??
1666Post New Electrical Engineering Questions
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As per standard, transformer body earthing and other Equipment earthing (Equipment earthing) did not connect. but in LT side termination we are doing metal glanding in both side Transformer to PCC Panel through armoured cable, now X'mer body earthing and PCC Pane earthing (Equipment earthing) both are connect.is this safe for X'mer or other equipment?
What is meant by earthhing of a magnetic flow meter and when to use empty pipe detection?
An ISP is granted a block of addresses starting with 150.80.0.0/16. The ISP wants to distribute these blocks to 2600 customers as follows. a) 200 medium size businesses; each needs 16 addresses b) 400 small businesses; each needs 8 addresses c) 2000 households; each needs 4 addresses Design the subblocks and give the slash notation for each subblock. Find out how many addresses are still available after these allocations.
The transmission does not have options: a)Partition noise b) Flicker noise c) resistance d) Short noise and reason
WHY TERTIARY OF POWER TRANSFORMERS IS LOADED WITH EQUIPMENTS LIKE CT,PT,ISOLATOR AND CB
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How to calculate VCB rating for 33KV ,25 MW Power line?
