What is the difference between Zero Current Transformer and
Core Balance CT ?
Answer Posted / nadine
Core Balance Current Transformers
The CBCT or the Core Balance Current Transformer is a current transformer is used for earth fault protection in grounded three phase systems. It is also known as the zero-sequence current transformer. The CBCT is a current transformer through all the three phases are made to pass as in the diagram. Thus the magnetic fluxes caused by the three phase currents cancel each other.
The net resultant flux being zero does not induce any current in the secondary of the transformer. Thus the secondary current of the core balance current transformerwhen all the three phases are healthy is zero.
When an earth fault occurs in one of the phases, the zero-sequence fault current which flows is not cancelled by the flux of the other two phases and hence induces a current in the secondary.
The core balance current transformer can be connected to an earth fault relay which can be used to generate the tripping signal
Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
explain PV modules in solar energy generation.
What is the form name of 'c' license, I want to download in web
Why power factor should not be in leading (capacitive) mode of any load.
how to test YNyn0 vector group in transformer?
bitumar
given data are load current & power factor cable core size? plz any one update the calculation formula
What are the two segments of nyquist contour.
Why we do 2 types of earthing on transformer (ie:)body earthing & neutral earthing , what is function. I am going to install a oo kva transformer & 380 kva dg set what should the earthing value?
how we calculate the dick for a pole?
How the annunciator works ? How to do its wiring
How can we calculate cable size in Low voltage & high voltage
I need bhel previous year quetion papers for electrical engineering department.I searched but i could not find out
HOW TO CALCULATE CAPACITOR BANK OR HARMONIC FILTER CALCULATION
what are the possible reaons & remedies if resistance of NGR getting heat up
PIU how does work?