what are the differenc between vcb and sf6 breakers
Answer Posted / kunjan singh
VCB can be used for upto 33 KV ,due to difficulty in
maintaining the vacuum inside a VCB at higher voltage,,and
also ,there are some size limitations...nowadays,at all
voltage level we can use SF6 CB having pressure of 5 to 6.5
kg/cm2..
Is This Answer Correct ? | 8 Yes | 2 No |
Post New Answer View All Answers
How to work E.L.C.B and how to connect in circuit.
What are the components of feedback control system?
How to select HT/MV cable size ?
Can the output voltage of a rectifier be greater than the input AC voltage without the use of any voltage multiplier in the circuit??please provide the explanation too..
why we use Test Terminal Block in 11 KV and 33 KV electrical panels.
1 “earthing” for bonding of equipment and circuits to common plant earth electrode potential, 2 “protective earthing (PE)” when this bonding is required for personal safety provisions 3 “grounding” for interference suppressing bonding of screens, sys-tems with ground level 4. low-impedance earthing ? 5.primary earthing system and secondary earthing system what is that? 6.earthing electrode or mesh net earthing electrode ? very confusing , simple but very informative help required ? i will be very very thankful to you guys.
What is shunt voltage and u v voltage witch one best
What is process of anneling transformer core
how much winding resistance of 0.75kw to 12.5kw 3ph sqwiralcage induction motor?
do you have some of interview Questions in power and genrator section in general whith answers
Where is servomechanism used?
. How to calculate the Short Circuit Impedance in Transformer? How to calculate the Short Circuit Impedance in Transformer?
Maintenance of transformer???
Mention what are the different colors on wires indicates?
What is block diagram?