Why use the VCB at High Transmission System ? Why can't use
ACB? Pls explain the ans.

Answer Posted / er. ankush miglani 9718151073

at high voltages the air may get ionized but the vaccum
doesnt. so dats why..........

Is This Answer Correct ?    10 Yes 4 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

is oil viscosity affect on motor current?

1503


what is the prinsiple of dc motor and construction and working ,application of dc motor.

1518


HOW TO CALCULATE THE HEAT AND LOAD OF LT-SUBSTATION WHICH CONTAINS 2*1MVA TRANSFORMERS,LT SWITCH BOARD,MLDB,ACB,BUSBAR,ETC...?

3477


Why efficiency of generator is higher than motor at a particular load?

1616


What is the Designing & Selection Procedure for a DG/Transormer of rated capacity?

1687






what is the interrelation between voltage current torgue speed and magnetic flux in case of different types of electric motors

1521


sir i ve applied for hindustan petroleum and power grid india ltd..and the exams on feb 22.can you pls send model papers and tell how to prepare for those.i need to get into any of these for sure.....

1732


why is the power generator connected as star earthed or star earthed through reactance and what its features ?

1156


What are the different sign conventions used in electric circuits?

664


How to measure the Harmonic Distortion of UPS ie THD?

1731


DG Earth Value?

1850


the grid connection required for a 50 MegaWatt fotovoltaic powerplant is higher or lower than 35kv (high or medium tension)?

1430


how to find 5 kilo meter long under ground 33 kv cable fault location if IR VALUE shows 0.05 M ohm @5000 volt.and cable fault locator shows some time fault distance 3 kilo meter ,3.7 kilo meter and some time 1 kilo meter? now how to find the fault location that where is leakage. note--it is tested with 5000 kv megger and insulation resistance is 0.05 M ohm. and some time 0.03 M ohm comes.

1729


I am having a 1500 KVA transformer whose secondary current is 2086A and my connected load is 1000 KVA, I am having 400 KVAR APFCR for PF improvement what ratio of CT should i install in LT EB Bus to get optimum PF improvement?

1309


How to test Alternator stability test for REF relay

954