Answer / guru

The purpose of grounding the CT secondary is inorder to
protect the CT circuit in case of any earth fault in the CT
secondary circuit. Thus even there is an earth fault & the
CT is open the current will still circulates through the
ground to CT. It prevents the accidental open circuit in
the CT which may lead to develop a high potential in
secondary which may lead to CT blast.

Answer / mak

Only For the safety purpse the secondary is short circiuted.It it is open heavy current ll flow and damage the equipment

wat's the procedure to take short circuit current for cable selection

0 Answers  

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in Telecom DC system-why positive +ve is made earthed.and - ve is fed to load.

0 Answers  

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power transmission pole used one support , that only for support or earthing

0 Answers  

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what's the difference between 'shaft power demand' and 'BHP' , when we consider electrical load list.

0 Answers   HEC,

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How can you calculate in detail the VA burden of current transformer used for Restricted earth fault protection? Please understand that the CT required here is Class PX or X. Also please show the calculations for knee point vtg, stabilizing resistor, magnetising current.

3 Answers  

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auto reclosing scheme for radial ehv feeder is to be implemented or not?

1 Answers   State Board,

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How to check the efficiency of the generator , air compressors.

1 Answers   CIL,

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function of soft starter .

2 Answers  

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is that a problem if i connect a single phase load to a secondry delta connected transformer but i get a neutral from other transformer i the system?

0 Answers  

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1. transformer design formula ? 2. how to calculate the primary turns and secondry turns ? 3. core types ? 4. how to find the primary current and secondry current ? 5. how to calculate the stacking factor ? 6. range of fulx density ?

2 Answers   Automation, Indian Railways, Mogora Cosmic,

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How can we estimate Gen rotor current?

3 Answers  

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What type of DC motor would you see for a lift?

0 Answers   Ericsson,

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