WHAT HAPPENS IN DIFFERENTIAL PROTECTION IF CT REACHES ITS
KNEE VOLTAGE POINT?
Answer Posted / rukmagoud
Differential protection requires two cts for its connection.
If one of the CT reaches its Knee point voltage , then the
CT Enters into Saturation. so when Ct is in Saturation
state, its characteristic changes, i.e the current will
not be proportional to primary current thereby
differential current comes into picture in differential
relay , there by there is a chance of maloperation of relay.
This usually comes when there is any through fault.
rukmagoud
APGENCO/NAGARJUNASAGAR
Is This Answer Correct ? | 49 Yes | 1 No |
Post New Answer View All Answers
What are the three constants associated with a steady state error?
how to select correct size of power cable for inverter duty motor
how to find Harmonics and types as per the equipemnts
give single line diagram of D.G distribution form alternator to main L.T panel?
all interview questions with answers of ntpc (2000-2009
why is control bus bi-directional?
1. what is usage for power factor in industries?? 2.why we need to monitor power factor??
Power Factor Correction Panel (Manual & Automatic)
How can we findout the maximum efficiancy of Transformer? At which load?
what is the best transformer oil breakdown voltage?
How to arrange a hous hold earthing system to keep minimum earth resistance( below 7ohms).
I have 2 KW electric water heater.I am gonna use it in controlling water temp.so I needed to increase or decrease the heating capacity.is there any electrical-electronic circuit for varying the resistance & so current?
how can i change the rotation of the AC single phase induction motor and show me by diagram
Explain the difference between verilog task and verilog function?
How many methods use the load flow solution?