Answer / baswaraj

Neutral point is basically a refrence point it may be at
any potential difference. i.e. 5V, 10V, 1000V etc.

Take an example of a system where voltage is fluctuating
between 9,950V to 10,050V. and its external body is at
10.000V, when we take Earth as the refrence point. Now
every calculation will include these parameters, but if
take 10,000V as the refrence point/ neutral of the system
then we can say the fluctuations are between -50 to +50V
only and further calculations will be easier then the
previous case.

Neutral point is a technical term for refrence point
whereas Earth is a typical example .

Answer / prabhu g

AS FAR AS I'M CONCERNED BOTH SOUNDS SAME. NEUTRAL IS THE
RETURN PATH IN AN ELECTRICAL CIRCUIT. EARTH IS CONSIDERED
TO BE THE COMMON REFERENCE POINT. AND THE NEUTRAL IS ALSO
CONNECTED TO EARTH(GROUND). IN OUR HOME, EVEN IF NEUTRAL IS
CUT, WE COULD USE OUR HOUSEHOLD EQUIPMENTS CONNECTING TO
EARTH. WITHOUT EARTH NOTHING COULD BE DONE, BUT SOMETHING
CAN BE DONE IF THER IS NO NEUTRAL.

Answer / indpreet kaur

earth is used forthe safety of the human body from fault
conditions. where as neutral is used for the protection of
equipments.

Answer / dillip

NETURAL CAN CARRY CURRENT BUT EARTH CAN NOT CARRY CURRENT

Answer / anwar

GROUND MEANS when small ckt. (control ckt.) are required to
be connected to common is called ground.
EARTH mean high voltage (power ckt.) are connected to common
(neutral) is called earth

Answer / saravanans

GROUND MEANS when small ckt. (control ckt.) are required to
be connected to common is called ground.
EARTH mean high voltage (power ckt.) are connected to common
(neutral) is called earth.

The transmission does not have options: a)Partition noise b) Flicker noise c) resistance d) Short noise and reason

0 Answers  

Sir we have 12.5 MVA(110/11KV) transformer (Y-Y) connected,which tripped showing earth fault,when we charged transformer it stood OK ,but on connecting 11 KV feeders it tripped showing earth fault.our service engineers found that the B phase and R phase phase connecting to neutral broken from HV OLTC(on load tap changer),and R phase and Neutral is ok.Dissolved gas analysis shows that accetline content is high,tan delta value is 12.My dout is it is an internal fault of transformer,why REF or diffrential relay is not acted?

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