The neutral point of 25MVA, 11kW alternator is grounded through a resistance of 5Ω, the relay...

The neutral point of 25MVA, 11kW alternator is grounded through a resistance of 5Ω, the relay is set of operate when there is an out of balance current of 2A. The CTs used have a ratio of 1000/5. Calculate (neglect resistance of alternator):
i. The percentage of stator winding protected against earth fault.
ii. The minimum value of earthing resistance to protect 95% of the winding.

Solutions

Expert Solution

In case you have any doubts please feel free to ask your doubts in the comments section. I would be happy to clarify it .

DO GIVE A THUMBS UP !!

Manojponduru answered 1 year ago

Next > < Previous

Related Solutions

In a sheep brain, we see that the thalamus acts as a relay point for all...

In a sheep brain, we see that the thalamus acts as a relay point for all sensory processing and noted the very large size of this structure. A. Do you think there are differences between the sensory systems of the sheep and the human? For example, do humans and sheep use each sensory system the same amount, or are there certain senses that are more prominent in sheep or in humans? B. How would this manifest anatomically? C. write 2-3...

Grounded theory is a research method that seeks to develop theory that is grounded in data...

Grounded theory is a research method that seeks to develop theory that is grounded in data systematically gathered and analyzed. According to Martin and Turner (1986), grounded theory is "an inductive, theory discovery methodology that allows the researcher to develop a theoretical account of the general features of a topic while simultaneously grounding the account in empirical observations or data." Discuss the techniques of grounded theory.

Find the line that passes through the point (0, 1) and through the point of intersection...

Find the line that passes through the point (0, 1) and through the point of intersection of the two lines and

A geosynchronous communications satellite in stationary orbit is used to relay radio messages from one point...

A geosynchronous communications satellite in stationary orbit is used to relay radio messages from one point to another around the earth’s curved surface. Apply Newton’s second law to the satellite to find its altitude in meters above the earth’s surface. RE = 6.38 × 106 m, mE = 5.97 × 1024 kg, and G = 6.674 × 10−11 Nm2/kg2.

Two semi-infinite grounded conducting planes intersect at 60 degrees. A point charge is situated inside this...

Two semi-infinite grounded conducting planes intersect at 60 degrees. A point charge is situated inside this wedge-shaped region. (a) Find image charges to obtain the potential between the conductors. (b) Can you use the result of part (a) to obtain the Green function for the Dirichlet problem between the planes? No explicit calculation is required; just explain

Provide an example application that uses normally open relay Contacts and normally closed relay contacts?

1. In a power system with negligible resistance, the three-phase fault current at a point is...

1. In a power system with negligible resistance, the three-phase fault current at a point is 8 pu. The series reactance to be inserted at the fault point to limit the short circuit current to 5 pu 2. A 3-phase, 15 MVA, 10 kV alternator has internal reactance of 6% and negligible resistance. Find the external reactance per phase to be connected in series with the alternator so that steady current on short circuit does not exceed 6 times the...

How do we know which relay contact is actuated by which relay coil? How does this...

How do we know which relay contact is actuated by which relay coil? How does this convention differ from that of standard electrical/electronic schematic diagrams, where the relay coil is shown as an actual coil of wire

A 8.0 µF capacitor is charged by a 11.0 V battery through a resistance R. The...

A 8.0 µF capacitor is charged by a 11.0 V battery through a resistance R. The capacitor reaches a potential difference of 4.00 V at a time 3.00 s after charging begins. Find R in kO. I've been using , but I'm not sure if that is right since I just CAN'T get the right answer...I keep getting 370.7 kO (incorrect).

Resistors are electronic components that limit the flow of electrons through a circuit. The electrical resistance...

Resistors are electronic components that limit the flow of electrons through a circuit. The electrical resistance of a resistor is measured in Ohms. A certain type of resistor is advertised to have an average resistance of 100 Ohms. A sample of 20 resistors is selected and gives a mean resistance of 102.4 Ohms and sample standard deviation of ? = 5.1 Ohms. Assuming resistance is Normally distributed, is there evidence to suggest the average resistance of this type of resistor...

Subjects