Answer Posted / denzel101
it is a relay that checks for current balance between the
primary and the secondary side of a transformer.it is also
used in other components of the power system like to
protect cables.it is also known as a unit protection as it
does not discriminate with any other protection schemes.the
ct secondary currents that circulates in the coil of this
relay from primary and secondary of the transformer
cancells each other when the system is healthy.when the
fault occurs in a system the balance is disturbed and the
resultant current activate the relay and cause trip.
| Is This Answer Correct ? | 73 Yes | 10 No |
Post New Answer View All Answers
what is under coal gassification?
Can you used moeller lzm1 mccb in a dc system with 125vdc and 20ka short circuit current , beside is it have 24 or 48 volt shunt ? Beside how long current can through from An MCB shunt contacts? (like Z7-AS 24 V)?
how to enter inverter parameter? without manaual?
While converting delta into star or star into delta ,the three values of resistances remains unchanged .Find out the value?Let In star R1=x;r2=x;R3=x On converting into delta,R12=x;R23=x;R31=x Find the value of x
How seriving & testing of the HT & LT breakers are done. What are the standard Ir values on which we can come to know the test is passed or failed?
what is the internal working of star delta starter
what is the difference b/w UHVDC and HVDC(LIGHT)?
mccb service sittings be done?
What would cause a 240v choke that should give 110v out on a 16w lamp to gradually increase to 160v?
What is domestic transformer? Draw the connection of domestic transformer.
Is there any question in the name of Static Switch in UPS??
Define load factor?
What are the advantages of a three-phase system over a single-phase system?
My load is 1635 KW. & current pf is 0.884, I have to improve it for 0.99.Please suggest what KVAR value is needed?
what are the reasons of CT circuit faulty in busbar protection scheme?
