Answer Posted / k.prakashchandra
It is 2 OCR + EFR scheme for line protection.Usually OCR is
provided for R & B phases and EFR is connected between the
star point of CTs and star point formed by OCRs (R & B
phases) and direct lead from the third CT (Y phase). R &B
phase ct currents through the OCRs, and Y phase ct current
directly form the second star point.
| Is This Answer Correct ? | 6 Yes | 4 No |
Post New Answer View All Answers
What is capacitance?
A mass of 1200g is accelerated at 200 cm/s2by a force. The value of the force required is:(a) 2.4N(b) 2400N(c) 240 kN(d) 0.24N
what do u understand from filter factor of reactor?
What is the typical enclosure type used for Indoor switchgear / Outdoor switchgear Units? - In Onshore / offshore Units?
why do you add the load short circuit impedance when considering short circuit amperage. It seems that you should only consider supply. If you need to consider loads and you don't know what loads are to be added , what would be a good sub-transient reactance rating for the loads?
if the armature current in a dc generator is ac ( sinusoidal ) why doesnt the sjhape af armature mmf a sinusoidal (ni) ? armature mmf in case of a dc machine is triangular.
what is the voltages using in movie theaters??? why ??why not other??
Define phase lag and phase lead?
why connecting surge unit in contactor coil
how to calculate micom relay earth falt time and current sertting
Safety of dry type transformer
i need about 10 years of GATE solved papers in pdf format and even mock tests toooo
where solid grounding and where grounding through ngr done and why?
What is principle of Floroscent tube 36watt.
How can calculate the earthing strip of Copper/GI for rating of 30kV,discharge current 10KA Lightning arrester.
