Compute steady-state short-circuit current in the feeder

Assignment Help Electrical Engineering
Reference no: EM13275912

Three sinnal-phase 50 KVA 2400:240 -volts transformers are connected Y-Δ and supplied with power through a 2400-V (line to line) 3-phase feeder whose reactance is 0.80 Ω/phase. The equivalent reactance of each transformer referred to its high voltage side is 1.82 Ω. All circuit resistances will be neglected. At its sending end the feeder isconnected to the secondary terminals of a 3-phase Y-Δ connected transformer whose 3-phase rating is 600kVA, 24000:2400 V (line to line voltages). The equvalent reactance of the sendin-end transformers is 2.76 Ω / phase Δ referred to the 2400-V side. The voltage applied to the primary terminals is 24000 V line to line.

A 3-phase short circuit occurs at the 240-V terminals of the receiving -end transformers. Compute the steady-state short-circuit current in the 2400-V feeder wires, in the primary and secondary windings of the receving-end transformers, and at the 240 V transformers.

Reference no: EM13275912

Questions Cloud

How much would he have paid for bank of america preferred : If he had wanted to achieve a 10% rate of return on his Bank of America investment, how much would he have paid for the Bank of America preferred stock?
Compute the period of the spacecrafts orbit : A spacecraft is in orbit around a planet. The radius of the orbit is 2.9 times the radius of the planet (which is R = 71451 km), What is the period of the spacecraft's orbit
Determine the value of the drain current when vsg : A p-channel MOSFET with VTP = -0.5 V has a drain current of 0.5 mA when VSG = 2.08 V and VSD = 5 V. Determine the value of the drain current when VSG= 3 V and VSD= 4 V
Explain what is the overall equation for the reaction : During the isomerization of trans-1,2-dibenzoylethylene C16H12O2 using 95% Ethanol C2H6O , and UV light irradiation. What is the overall equation for this reaction. What is the product.
Compute steady-state short-circuit current in the feeder : A 3-phase short circuit occurs at the 240-V terminals of the receiving -end transformers. Compute the steady-state short-circuit current in the 2400-V feeder wires, in the primary and secondary windings of the receving-end transformers, and at the..
What is the resistivity of the other material : Two wires of the same cross-sectional area and length, but made of different materials, are connected in series. what is the resistivity of the other material
What is the value of a share of common stock : What is the value of a share of common stock that paid $2.00 last year, the growth rate is 8%, assume the risk free rate is 4%, the market return is 10% and the Beta is 1.5. Please show your work. Thanks
How much time passes before the alpha particle comes to rest : An alpha particle is a helium nucleus and therefore consists of two protons and two neutrons. How much time passes before the alpha particle comes to rest
Find coefficient of kinetic friction between skis and snow : An 60 kg skier is sliding down a ski slope at a constant velocity. The slope makes an angle of 5 degrees above the horizontal direction. What is the coefficient of kinetic friction between the skis and the snow

Reviews

Write a Review

Electrical Engineering Questions & Answers

  Display and animate a pendulum swinging based on conditions

Write a MATLAB program than can find and plot the pendulum angle as a function of time given an initial swing angle f=f/2. Using the plot command of MATLAB, display and animate a pendulum swinging based on the described conditions.

  Ignore electrical attraction between proton and electron

A uniform electric field of magnitude 690 N/C exists between two parallel plates that are 3.88 cm apart. A proton is released from rest at the positive plate at the same instant an electron is released from rest at the negative plate.

  Find angle between resultant current and terminal voltage

If mechanical input power is increased following synchronization but not field current, prove that the angle between the resultant current and the terminal voltage will always be delta/2. Prove it geometrically with a graph and also via the equati..

  Find the total transmit signal

Consider an 8-user CDMA system. The data vector of all users is given by [1,1,1,1,-1,-1,-1,1]. Find the total transmit signal.

  Find new values for x are available roughly every minute

A special external data signal (DATA_READY) is asserted whenever each of the bits for X are available. In addition, another special signal (ENCODE) is asserted during the transmission of the data X indicating whether 2X+3 or 3X+1 should be compute..

  Calculate and return the angle in radians

write a script that will call: a function to prompt the user for an angle in degrees and call a function to calculate and return the angle in radians (note:pi radian =180) and call a function to print the result.

  Find what is the step response of the filter

Given the digital filter transfer function H(z)=1-z^-1 , what is the step response (that is, the input to the filter is unit step sequence u(n) ) of the filter A. y(n)= delta(n)+delta(n+1) B. y(n)=u(n-1) C. y(n)=u(n)-u(n-1) D. y(n)=u(n-2)

  Create the ladder diagram program to accomplish control

A control system is needed to control a small shopping center parking lot lighting system and the exterior lighting for the building. The design specifications require that the parking lot lighting and the exterior lighting turn on at dusk automat..

  What does tp become if the design is changed to matched one

Find the propagation delay for a minimum-size inverter for which Kn' = 3 Kp' = 180 uA/V^2 , and (W/L)n = (W/L)p = 0.75 um/0.5 um , VDD = 3.3 V , Vtn = -Vtp = 0.7 V, and the capacitance is roughly 2

  Find the amplitude of the output signal if the 12khz input

at the frequency f=12khz, a filter is designed to attenuate the input signal by 78db, find the amplitude of the output signal if the 12khz input has an amplitude of 1V.

  Find time at which charge on the capacitor is equal to zero

Find the charge on the capacitor in an LRC series circuit at t = 0.01 s when L = 0.05 h, R = 2 O, C = 0.01 f, E(t) = 0 V, q(0) = 5 C, and i(0) = 0 A. Determine the first time at which the charge on the capacitor is equal to zero.

  Find sequence components vfa1-vfa2 and vfa0 at fault rate

At a point f in the system, there is an open-circuit fault on phase-a with a voltage across the open-circuit as Vfa , whereas Vfb =Vfc =0. Similar to the calculations of the short-circuit currents by making use of the sequence networks

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd