What kinds of decision are made about CT from it's Knee
point(voltage & current)?

Answer Posted / shariff

Knee Point Vog is the Point where the Votlatge shouts up
and the Current gets saturated for the CT across its cors
and it is a very vital parameter for any current
transformer. And this Knee Voltage value should be same for
all the 3 phases of the CT.

Is This Answer Correct ?    3 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

errection check list for transformer maintenance

2172


why most of junction box vendors providing T5/T6 Temp class jb's for T3 area any special reason?

1619


7- What is the Dissipation Factor and the difference between it and Insulation Resistance Test? 8- What is the task (function) of DC and AC reactors in power plant? 9- What is the task (function) of (open delta with earthed) in some types in transformers? 10- What is the base of the selection of the vector group in transformers? 11- What is the zig-zag transformer and its function by drawing in large detail? 12- What is the polarity ? 13- Why we make short between phase(R) in high side and phase (r) in low side in vector group test? Where High Side ( R ,S and T ) and Low Side ( r ,s and t ). 14- What are the time on delay and time off delay? 15- What is the vector group? 15- What is the task (function) of different types of vector group such as Dyn11 , Dd0 , YNd1,……..,?

1767


We need to current density & short circuit calculation at 65kA for aluminium & copper busbar.

1238


Diagram and details of polarity test for Current Transformer 11kv 400/200/100/1A

2556






If there is major % of Voltage harmonics in the system, how can it be control or reduced?

1559


What is the basic principle of operation of alternators/dc generators?

611


Draw a SLD of DG distribution up to main LT panel?

8843


Why Ac Systems Are Preferred Over Dc Systems?

781


When color of silica gel will gets change from blue to pink from Top to bottom?

1110


1.what is the difference between ct and cvt? 2.what is the difference between pt and cvt? 3.what is the difference between relays and circuit breakers?

2276


upto how much low RPM we will run the commercial motor which is run through VFD without any problem occurs in motor.Motor rating Duty is S1 & RPM is 1400.

1629


following are the questions asked in interviews: 1) Considering the short circuit fault, which switchgear is preferable, SFU OR MCCB? Which operates faster? whicg one is popular in Indian Market and why? 2)Define SCPD. What is type2 coodination? 3)Why the contactor rating is higher for the fuseless selection than for fuse selection? whether the ratinf of SFU or MCCB remains the same in both the cases? 4)If the HP rating is known then can you calculate the ratings of L.V Switchgear(SFU/MCCB, contactor, OLR) without using the selection chart?

1614


The D.C. spark test is applicable to single conductor cable & assemblies of insulated single conductor cables without insulation shield,metallic sheath or metalic armor?

1395


If increased the frequency up to 1000 then what changes shows in voltage?

1965