Why transformer neutral is earthed
Answers were Sorted based on User's Feedback
Answer / remodeen
FIRST FOR PROTECTIONSOF OVER CURRENT, SHORT CKT IN TRANSFORMERS.,
WHEN BALANCED CONDITION THERE WILL BE NO CURRENT FLOW IN NEUTRAL.,,
BUT UNBALANCED CONDITION HOWEVER THE FAULT CURRENTS GO TO NEUTRAL AND HOW THE PROTECTIONS TAKE PLACE?????
ACTUALLY IN NEUTRAL THERE WILL BE NEUTRAL CT CONNECTED WITH EARTH LEAKAGE RELAY.,,
WHEN UNBALANCED CONDITION OCCURS THE CT SENSE THE FAULT CURRENT THAT GOES TO ELR.,, FINALLY THE RELAY TRIP THE MAIN SUPPLY.,,
Is This Answer Correct ? | 19 Yes | 1 No |
Answer / ganesan.n
To Ground the Un balanced cirulating current!!!
Is This Answer Correct ? | 9 Yes | 4 No |
Answer / jagdish pd pawar
All electrical machines,house hold equipment is required to
connect with earth (groung)for safety pupose.
When phase will leack to body of electrical machine,throgh
earth only transformer neutral will connect and circuit
will complete and cicuit fuse will blow out(due to draw of
heavy current)and prevent the human from electric shock.
Is This Answer Correct ? | 4 Yes | 2 No |
Answer / pravin tamshetty
Ground or earth in a mains (AC power) electrical wiring system is a conductor that provides a low-impedance path to the earth to prevent hazardous voltages from appearing on equipment (high voltage spikes).a grounding conductor does not carry current. Grounding is an integral path for home wiring also because it causes circuit breakers to trip more quickly
Neutral is a circuit conductor that normally carries current back to the source. Neutral is usually connected to ground (earth) at the main electrical panel, street drop, or meter, and also at the final step-down transformer of the supply.
Is This Answer Correct ? | 0 Yes | 0 No |
Answer / m.arun kumar
Because of excess of wire in the system....
Is This Answer Correct ? | 0 Yes | 3 No |
Answer / u.chandarasekar
Then How Earthing Contractor Gain Tats Why The Earthing Is
very Need In Transformer
Is This Answer Correct ? | 0 Yes | 6 No |
what is the function of cooling tubes in transformer
Relative synchronous generator
1)What will be full load current for 1000kva 3 phase generator. 2)What will be full load current for 20Kva 1 phase inverter.
If a 1.5V,3W torch light bulb is connected in series with a 15HP/11.19KW,230V single phase motor and the combination is connected against a 230V supply and switched on than what will happen keeping all other parameters as it should be A)the bulb will glow normally B)the bulb will not glow C)the bulb will glow with extra brightness D)the bulb will burn out and if a fuse is connected to the above circuit will something happen to the fuse and what about the single phase motor will it be affected? Please explain with derivation
why 2 phase is used in argc furnace? why 6 phase is used in converting machinery?
What do you mean by an instrument transformer?
which one is more efficient, torq, power & ecnomy with the same frame size AC motor / DC motor?
If ct ratio is 250/1 and mtr is of 5 amp, what will be mf?
I WANT TO KNOW LONGFORM OF CT/PT USEDIN POWER PROJECTS OR HT SWITCH YARD.
if our load in 3 phase circuit is 4000 amp. calculate the capacity of capacitor panel if line power factor is.80 .
How do we arrive at selecting reactive capacitance value as 30% of h.p rating of motor?
what will happen at the time of CT saturation?and what will be the Relay's function at the time of CT saturation?