Three single-phase, two-winding transformers, each rated 45 0 MVA , 2 0 kV / 288 . 7 kV , with leakage reactance X eq = 0. 1 0 per unit , are connected to form a three-phase bank. The high-voltage windings are connected in Y with a solidly grounded neutral. Draw the per-unit equivalent circuit if the low-voltage windings are connected (a) in Δ with American standard phase shift or (b) in Y with an open neutral. Use the transformer ratings as base quantities. Winding resistances and exciting current are neglected.
Three single-phase, two-winding transformers, each rated 45 0 MVA , 2 0 kV / 288 . 7 kV , with leakage reactance X eq = 0. 1 0 per unit , are connected to form a three-phase bank. The high-voltage windings are connected in Y with a solidly grounded neutral. Draw the per-unit equivalent circuit if the low-voltage windings are connected (a) in Δ with American standard phase shift or (b) in Y with an open neutral. Use the transformer ratings as base quantities. Winding resistances and exciting current are neglected.
Solution Summary: The author calculates the per unit equivalent circuit when the low voltage windings are connected in Delta .
Three single-phase, two-winding transformers, each rated
45
0
MVA
,
2
0
kV
/
288
.
7 kV
,
with leakage reactance
X
eq
=
0.
1
0
per unit
,
are connected to form a three-phase bank. The high-voltage windings are connected in Y with a solidly grounded neutral. Draw the per-unit equivalent circuit if the low-voltage windings are connected (a) in
Δ
with American standard phase shift or (b) in Y with an open neutral. Use the transformer ratings as base quantities. Winding resistances and exciting current are neglected.
I need handwritten solution to this, electrical engineering expert tutor s only,this is an assignment,I need 100% accuracy
5. Determine the CT convolutions for the signals below. Sketch the signal that flips and on same plot the
one that is not flipped. Do this for each overlap case. Clearly indicate all overlap cases and the integral
limits. Finally, using the left squiggly bracket notation, show the output for each case versus time.
(c) 4
x(t)
2
1
2(t) 4
x(t) 4
0123
et 20
x(t)
(4) 4
(a)
+(1)
24
T
0123
(b)
T
(f)
1
2-2
0123
(c)
(f)
0123
(d)
(1) A
t
1(8)
4,121
-101
3
(e)
Solve by pen and paper not using chatgpt or AI
Find the current io, and the voltage vo in the circuit in Figure 4. Answer: ἱο = 1.799 Α, νο = 17.99 V.
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