what happen if one of 3-phase line has a much higher load when
we are using delta to star transformer?
how we can over-come from that?

Answer Posted / sb

Upto certain extent it is allowable but beyond that O/C
relay may trip the circuit.
As said by the above friend abnormal neutral current will
flow & hence through the CT sec side & will actuate the relay.

Is This Answer Correct ?    6 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

what mean by analog ,digital,numerical meters and relays? say the example?

1765


what is the safety of voltage power transformer(2250KVA0

1555


HELLO EVERYONE, I RECENTLY HAVE FOUND ONE PROBLEM, I WAS TAKING NO LOAD TRIAL OF AN HT MOTOR 920 MOTOR , 1440 RPM , 6.6 KV, WITH AUTO TRANSFORMER. AT 450 V, LOAD WAS 40 AMP AND SPEED WAS 250 RPM. BUT AS WE INCREASE VOLTAGE FROM 450 TO 480V, LOAD BECOME 41 AND SPEED REDUCED TO SOME RPM . SO WHICH PHENOMENON ACTED HERE FOR REDUCING SPEED.?? AND IS IT HAPPENING ALWAYS OR IT IS RARE? I ALSO HAVE FACED SUCH PROBLEM WITH FEW LT MOTOR ALSO.

1460


HOW WE CHOOSE EARTH'S POTENTIAL AS ZERO V?

1608


what is the eight bit unit?

1975






armature winding of dc machine produce alternating emf then it convert in to dc by using commutator.But only we consider armature resistance why don't we consider inductive reactane effect?

1640


Can XLPE/SWB/PVC (P3) 7C X 2.5mm2 be replaced by Can XLPE/SWB/PVC (P2) 7C X 2.5mm2??? P3 vs P2

1367


what are the accessories need to be added while doing estimation for the following: 1.MCCB 2.MCB 3.ACB

1583


how to find out 3 phase complex power in per unit in unbalanced system?

1580


How do u analyse protection fault when vcb tripping on load

1165


what is the stear deltaprinceple?

1415


how to Select its CORE in electrical cables based on its applications? or Application of various types of electrical cable based on it CORE?

2765


Why the symbol of register is "zig zag"

1145


For electrical designers what are the standard should know? i want learn about this standards. how to get information/reference. anybody help in this regards please.

1656


For small size, high frequency coils, the most common core material is- a. )Air b. )Ferrite c.) Powdered ion d.) Steel

2525