WHAT HAPPENS IN DIFFERENTIAL PROTECTION IF CT REACHES ITS
KNEE VOLTAGE POINT?

Answer Posted / ramesh p

the differential relay will get maloperation when one of
the CT get saturation

Is This Answer Correct ?    7 Yes 2 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

where can the transformer having vector group Yny0 be used??

3595


aternator every parts and its working

1188


I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?

1421


i want use the cable size 16cx4 core aluminium usege watts 240x2000w this cable size is correct?

1789


Please help me regarding my one concern. - During earth pit testing we noticed that the Clean earth pit and dirty earth pit showing continuity (Resistance value - 5ohm) . I want to know that if both earth pit have separate location and there is not internal looping between PIT then why such continuity is showing on it . Because of this issue the field side all earthing point showing short. In PLC panel we are providing two types of earthing cable which is coming from separate earth pit (Clean and Dirty earth pit) because of earth PIT showing short our PLC is not complying spec . please help regarding this issues.

1103






would the same effect be achieved by reversing the connection to one winding of the induction motor 3-phase?

1338


i am trying to PSUs/govermeant jobs since last 2 years but still i m not success, plz help me.

1458


Battery is a voltage source? give one example of current source and why?

1103


Define non-touching loop.

818


What is Plank's Law?

694


draw the restricted earth fault protection circuit install on power transformer and identify its parameters and draw C/C curve of it

2203


What is proportional controller?

698


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?

676


how to estimate wiring ins roughing ins. and boxes

1963


What will be the voltage regulation of a full load and 0.80 power factor lagging load transformer when a two winding single phase transformer has a voltage regulation of 4.5% at full load and unity power factor?

746