why ct mensioned 0.5/5p20 plese any reply to me
Answers were Sorted based on User's Feedback
Answer / aju m paulose
0.1, 0.2, 0.5, 1, 3 are Accuracy class
They are used for metering purposes
5P10, 5P15, 5P20 are used for metering and protection purposes
5 indicates Composite error in % and 'P' for protection and 10 means accuracy limit factor...
i.e the CT will have 5% error if the current under measurement is 10 times the normal value
Is This Answer Correct ? | 19 Yes | 2 No |
Answer / balakrishna
ct has 3 classes.ie.
0.2,0.5,1
5p10,5p20
ps
here 0.2, 0.5,1 used for metering classes
5p10,5p20 used for protection like overcurrent & earth
fault purpose
ps class used for the differential/distance protection
Is This Answer Correct ? | 6 Yes | 2 No |
when we increased the current what do ?
what is meant by skin effect ?
i have faced a problem in ro plant grunfos make bm30type pump it is 22kw pump. We start this pump using siemens 3rw 4423-ibc44, 30kw softstarter but this soft starter will frequently failier so we planed to change dol starter. So pls tell anybudy its possible or not.
TO operate transformers in parallel, vector symbol of the both should be same.If one transformer name plate is not there, how can we conclude that whether the transformer is having the same vector symbol or not?
why the rotor is outside in case of ceiling fan?
Why only plate(copper) Earth pit given for neutral earthing? why not pipe(G.I) Earth pit?
what is solkor relay and which condition it will act?
what is ac servomotor??
Why is ignitor used in sodium vapour lamp
What is BMS System???Types...
dear all, i want to ask that what is diversity factor. please explain breifly. because i hve quiet no concept about this.
Which system is best for industries 3ph 3w or 3ph 4w?