Interested to Buy Any Domain ? << Click Here >> for more details...
Between Star-Delta & Star-Star Power transformer which one
is efficent for Earth Fault?
- 10 Answers
- 16844 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / daher
star/star because in the case of line to earth faults the
zero curret IO in delta connection transformer has no path
to leave the close loop of three phases transformer
| Is This Answer Correct ? | 17 Yes | 8 No |
Answer / nidhi
star delta .
because in star star connection solidal grounding should be
provided to ground third harmonics. in star delta whenever
afault will occur then it will circulate only in this delta
not go to the output
| Is This Answer Correct ? | 12 Yes | 5 No |
Answer / sunil guru
Star - Star bcz.. it has a point at center which can be
used as a neutral or can be grounded,
but in case of star-delta there is no path for ground
return current during short circuit..an the circulating
current will flow inward itself and can damage the winding..
for any disagreement mail me at parmar20072008@yahoo.com
| Is This Answer Correct ? | 2 Yes | 0 No |
Answer / awais
Star star because for earth fault return path is required to complete the circuit so neutral grounded star connection is ideal for such type of fault detection..
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / daher
star/star in case of line to ground short circuit in star -
delta transformer their is no path to I0 short circuit
current and it will turn inside the closed circuit of delta
connection
| Is This Answer Correct ? | 1 Yes | 4 No |
what are the usual topology of transformers at different substations in the power system and why that particular topology is choosen. what are the limitaions of that topology?
why do we generate only 3ph ac?is it possible to generate 4ph,5ph,....?
6 Answers Accenture, Bhel, Reliance,
Piezoelectric materials serve as a source of:- A. Microwaves B. Ultrasonic waves C. Musical waves D. Resonant waves
PAC and simple Ac different
What is auto transformer?
28 Answers ABC, Transformers and Electricals, US Consulate,
how does the switching of capacitors in a capacitor bank take place when we use them at the load side to reduce the power factor?
give single line diagram of D.G distribution form alternator to main L.T panel?
When testing an earthing connection, we use a 60 or 100 candle bulb with a phase connected direct from supply and the other wire to the new earthing provided.If the bulb glows then the earth is ok.Else earth connection is not Ok. So, why dont we can use all the home appliances taking a single wire from the phase and the return connection to Earth instead of return connection to neutral?
why do star-delta connection ? why do not connect any circuit direct connection ?
I have draw the 350A DC current, so what is the size of cable i can use? Give me the answer with formula
What is the function of restraining coil in differential relay? as well as restraining current?
what happens if commutator is removed in an dc machine?
-
Civil Engineering (5086) - Mechanical Engineering (4456)
- Electrical Engineering (16639)
- Electronics Communications (3918)
- Chemical Engineering (1095)
- Aeronautical Engineering (239)
- Bio Engineering (96)
- Metallurgy (361)
- Industrial Engineering (259)
- Instrumentation (3014)
- Automobile Engineering (332)
- Mechatronics Engineering (97)
- Marine Engineering (124)
- Power Plant Engineering (172)
- Textile Engineering (575)
- Production Engineering (25)
- Satellite Systems Engineering (106)
- Engineering AllOther (1379)
