What is the difference between PT for metering and PT for protection ?

Answer Posted / k.prakashchandra

Metering PT s are more accurate ( 1, 0.5 ,0.2 )for 80% t0 120% of rated voltage .

Is This Answer Correct ?    3 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

How we calculate the size of ht cable for any transformer

1556


how rectifier transformer work in electroststic precipetatore(esp?

2095


Either It Possible a dc Motor to Run On Ac Drive [ Ex : ACS 800 , Yaskawa F7 ] If it is Possible How Pls Inform Me dinesh_elect_eng@yahoo.com

1551


PLS SEND THE RRB CHENNAI MODEL QUESTION PAPER my email id is ganesan98655@rediffmail.com

1617


WHY IL=IPH IN STAR AND WHY IPH=IL/1.732 IN DELTA? WHAT IS REASON BEHIND IT?

5589






upto how many load can v connect to stabilizer which is used for tv

1728


if a 3phase 100kva distribution transformer , 400 v,50 hz, 4-wire system is loaded at 160 k.w mostly 1-phase Lighting & Airconditioning split a.c load what will be the net effect on the power system in terms of voltage, powerfactor, current , efficiency of xformer

1463


What is slip in an induction motor?

646


What are the advantages & disadvantages of a group electrive drive?

1657


working principle a.v.r. ?

1911


3 phase induction motor connection star or delta while using ac drive motor is .75 to 5.5 kw

1517


How many Zones can be in Conventional type fire alarm system & how can we detect the fire in Conv. type FAS?

1377


a 100mva,400/200v transformer has leakage impdce of 10% draws a steady state line currentof---------------

1461


How maesure earth neutral value & how much maximum value value required in between earth & neutral.

1588


operation of protection relay watchdog contact?

1938