Why VA rating of metering CT shall be lower and protection CT shall be higher

CT VA rating has a very important role in performance of CT. hence proper selection of VA rating is very much essential. However of the VA eating of metering CT is lower it is beneficial exactly opposite is for protection class CT. In this video we shall see why!!!!
#electricaltechnologyandindustrialpractice
#currenttransformer
VA rating of CT
#CT_Burden, #CurrentTransformer
CT sizing calculation
CT burden Calculation
CT burden selection
Current Transformer burden calculation
Current Transformer burden selection
Current Transformer burden
Current Transformer
Current Transformer in power system
what is burden of current Transformer
what is CT burden
Burden selection of CT
burden calculation of current Transformer
Burden of metering CT
Selection of burden in current Transformer
Burden of protection CT
Burden calculation of protection Current Transformer
Burden of metering CT
Burden calculation of metering Current Transformer
why metering CT VA shall be lower
why protection CT VA shall be higher
VA rating of metering CT vs Protection CT
Please like, share, comment and subscribe.
Thanks for watching the video

[@jaydhokai8364]

Very useful. Thanks.

[@surendrakverma555]

Very good. Thanks 🙏🙏🙏🙏

[@subratamohapatra6478]

Very nice learning

[@shantanumajhi5408]

Very useful.
Sir kindly make a lecture video on VCB selection.

[@shankhachongder6065]

Thank you sir

[@bheemeshbatta2172]

Of course your explanation may be correct isf and Alf but the reason for low burden for Metering class CTs is due to the metering CTs should be accurate compared to protection class CTs in order to be accurate low burden indicates less secondary voltage which in turn less magnetising current and less magnetising current means actual current is closer to measured current.

[@sanjeevrana8317]

Keep it up

[@bheemeshbatta2172]

just imagine the CT Circuit model and saturation depends on magnetising current. More is the secondary voltage more will be burden and more will be magnetising current. So if actual burden connected is more compared to rated burden than at less current (less than rated ALF or isf) CT gets saturated.

[@Doti_231]

very good explanation
thank you for sharing

[@thinkseeeatthroughvickus4555]

How to find minimum required ALF for a relay?

[@rukmagoud]

In Protection class CT we find one more class PS. In class PS CT manufacturer never specifies any burden. He specifies only knee point voltage. How much burden shall be connected to this CT?

[@electricaltechnologyandind5335]

PS class CT has some other method. However its VA rating could be also determined. I shall make video on that....

[@sanjeevrana8317]

@@electricaltechnologyandind5335 video awaited

[@RajeshSharma-ge8ui]

If Sn will increase then we have to choose above 5P20 rating of CT

[@electricaltechnologyandind5335]

No. 5p20 will act as say 5p40