what is the difference between delta-delta, delta-star
transformer???
Answers were Sorted based on User's Feedback
Delta - de;ta transfomer is used at Gnerating station or a
receiving station for Change of Voltage , generally it is
used where the Voltage is high & Current is low.
where Delta star is a distribution kind of transfoemr where
from secondary star neutral is taken as a return path .
this configuration is used for Step down voltage phenomina
Is This Answer Correct ? | 26 Yes | 0 No |
Answer / raj
delta delta transformer is used in generating systems and
transmission systems because voltage is major
consideration(voltage is stepped up to above 11 or 33kv i.e
220 or 440kv) and delta star transformer is a distribution
transformer(stepped down to 11kv or 440v) because current is
major consideration, in distribution systems we need a
neutral, so the neutral point is taken from star connection.
Is This Answer Correct ? | 18 Yes | 0 No |
Answer / rajendran m
Delta - Delta is 3 phase to 3phase.
Delta - Star is 3 phase with neutral
Is This Answer Correct ? | 8 Yes | 1 No |
why we use two slope(differential & restraining) in differential relay.but in busbar protection differential we are using only one slope?please explain
load increase means 1 resistance increase 2 load resistance decrease 3 current increases through load 4 none of these
i heard that power factor(PF) is the main concern for industries, if they are maintaining PF around 0.6 they will be fined for that. now the question is, how can they improve the PF ranging between 0.9 to 0.95 which is safe for them i,e escaping from the fine?
how the CT and PT is connected in the circuit during testing of transformer explain with diagram
why we are used D.c. voltage in L.T.side or controling side.we can use UPS also ,in place d.c. voltage
What is the name of transformers oil filteration equipment?
what is the pre charge circuit,what will be work which function it will be use plz tell me
what is AMF panel????????
What are the types of circuit breakers ?
Why are the cores of large transformers built up of circular transactions ?
how to decide cable rating? send me cable size,ampere rating data
why current coil has less number of turns compared to pressure coil?