What is Procedure the procedure to select CT's & PT's in
66kV and above substation?

Answer Posted / rambabu

above is correct but the ct is current transformer for
measuring current and pt is measuring voltage in
sub-stations.these are using in HT sub stations only 1100v
and above.

Is This Answer Correct ?    11 Yes 6 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

HOW TO CALCULATE EARTHING SIZING?

1567


when 20hp 3 phase motor start no load condition in star or delta connection.find current and write formula.(tariq)

1533


how to calculate fuse rating for a motor

4895


what is ps impedance test

1668


how is the cable tray designed & how its total length is calculated for an Industrial plant Say for Ex. (500KW Motor Load)

1478






to vary valtage from 0 - max a variac is necessary . so how to design for high power applications nearly about 200KW power

1595


How do u analyse protection fault when vcb tripping on load

1165


Could Please Explain briefly. Why used stabilizing resistance series with High impedance bus differential protection relay.

1282


FOR 16/20 MVA 132/33 KV ONAN/ONAF TYPE TRANSFORMER IT IS DESIGNED FOR 16 MVA WITH ONAN CONDITION.IT BECOMES 20 MVA UNDER ONAF CONDITION.LOAD LOSS IS GUARANTEED FOR 65KW AT 20 MVA AND % IMPEDANCE 13.75. PLEASE TELL US AT WHAT LOAD LOSS AND % IMPEDANCE IT SHOULD BE DESIGNED FOR 16 MVA AND WHAT WILL BE ITS EFFICIENCY AT 20 MVA?

2957


Importance of fault current in power transformers and how to monitor the same? How is it different from winding temperature?

1338


Y phase plates are used in transmission line??? what is there need???

2440


what is star delta starter? how it works? give its control and power diagram.

1618


Name the types of motors used in vacuum cleaners, phonographic appliances, vending machines,refrigerators, rolling mills, lathes, power factor improvement and cranes.

701


Differentiate between Zero and Negative sequence current

1452


How can you sized or estimate the ligthning arrester current rating?

1621