A three phase power transformer having a line voltage ratio of 400 V to 33 kV is connected in star-delta. The C.T.s on 400 V side have current ratio as 1000/5. What must be the C.T. ratio on 33 kV side. Assume current on 400 V side of transformer to be 1000 A.

A three phase power transformer having a line voltage ratio of 400 V to 33 kV is connected in star-delta. The C.T.s on 400 V side have current ratio as 1000/5. What must be the C.T. ratio on 33 kV side. Assume current on 400 V side of transformer to be 1000 A.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

See similar textbooks

Related questions

Q: Question- For a single phase 440/110 V transformer having input on primary side at no load is 100 W.…

Q: In a single phase transformer, what test to be conducted to measure the iron losses directly .…

A: In the question Draw the single phase diagram to measure iron losses. Which method is used to…

Q: A 25 KVA single phase transformer has turns ratio of 100/29. If low voltage side is connected to 250…

A: Solution: Given data; KVA =25 KVA, single phase transformer ; turns ratio=N1N2…

Q: Transformer Action & Equiv... A three phase star/delta transformer is used to step down voltage. If…

A: Given- A three-phase star/delta transformer to step down voltage- Primary voltage =11 kV, Secondary…

Q: Q3) What are the elements finding from no-load test of single phase transformer?

A: At no load test rated voltage is applied with secondary open circuited. At no load only magnetizing…

Q: The efficiency of transformer is maximum at 10O0% loading? * True False

A: The given statement is a false statement.

Q: The number of turns on the primary and secondary windings of a 1-p transformer are 350 and 42…

A: Given : A single phase transformer having number of turns on the primary and secondary winding are…

Q: Explain the Different connections of Three Phase Transformer including the working principle

A: Electrical machines can be either generator, motors or transformers. They can be either Ac machines…

Q: What would happen if primary and secondary of transformer are connected to sources of different…

A: Transformer is used to transfer electrical energy from primary winding to secondary winding.…

Q: In transformer, loss that is related to ohmic resistance of winding is

Q: A normal transformer has a nominal 60 kVA. The nominal primary and secondary voltages are 600 V and…

A: Given data : Transformer rating P=60 kVA Primary voltage V1=600 V Secondary voltage V2=120 V

Q: 7. What is the no-load voltage when the full-load secondary voltage is 108 V and transformer…

A: Given: In a transformer, Full load secondary voltage V2fl=108 V. Transformer regulation VR=10%.

Q: construction H.W What is the Transformer construction? Give me types of transformer?

Q: Q.3. Why is the transformer core laminated?

Q: A 230-V, kVA single-phase transformer has an iron loss of 100 W at 40 Hz and 70 W at 30 Hz. Find the…

Q: Three single phase transformers are connected in a Delta-Wye configuration. Each transformer is…

Q: 4. The load cycle of a three-phase 100 kVA, 11/0.4 kV, 50HZ transformer for one day is given in the…

A: Lp

Q: what is the Formulae of short test of single phase transformer and Formulae to determine efficiency…

A: If, Wsc = Full load copper losses Isc = short circuit current Vsc = short circuit voltage Equivalent…

Q: Two single-phase transformers in an open delta bank served a three- phase balanced load of 100 kVA.…

A: Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: Detailed description of open circuit test on single phase transformer

A: In this question we discuss about open circuit test of transformer .

Q: Explain conditions of 3-phase transformer to be connected in parallel.

Q: How is the EMF of a three phase transformer

A: TRANSFORMER: The transformer transfers power from one circuit to another circuit without a change…

Q: In short circuit of single phase transformer input power is equal to

A: Short circuit test usually conducted on H.V side and L.V side is short circuited.

Q: QUESTION 12 A single phase 600v/120v transformer has a load of 30 ohms resistive and 20 ohms…

Q: B)-Draw the connection diagram of three-phase with Y-D connection and give the mathematical…

Q: In a 25kVA single phase transformer the core loss and full load copper losses are respectively 320…

A: Given data KVA=25Core loss (Lc)=320 W=0.320KWCopper loss (Lcu)=380W=0.380 KW (full load)cos…

Q: Multiple choice questions: 1- A voltages of 50Hz transformer are 1500 V on primary and 600 V on the…

Q: A 3-phase transformer is assembled by connecting three 720 -VA, 360/120 V single phase transformers…

A: A 3-phase, Y−Δ connected transformer is assembled by connecting three 720 VA, 360/120 V single-phase…

Q: A 100VA single-phase transformer inside a refrigerator has 100 turns in its primary coil and 20…

Q: In no load Phasor diagram of practical transformer, the iron loss current lc is with flux 0. O In…

A: In the question, Fill the given blank from the given option. In the load phasor diagram of…

Q: Given this transformer with load, what is the expected phase of the primary and secondary voltage?…

A: The solution is provided in the following section.

Q: In transformer , which is always working with its secondary short circuited.

A: In this question , we have to find out transformer in which secondary short circuited...

Q: In load test on single phase transformer, the secondary voltage decreases with increase in load.…

A: In the load test of the single phase transformer. This is based on the true false. Secondary…

Q: Why there is humming soound in transformer?

A: The humming sound in a transformer is primarily caused by a phenomenon called magnetostriction,…

Q: A single-phase transformer is required to step down the voltage from 1100 V to 230 V at 50 Hz. The…

A: It is given that: V1=1100 VV2=230 Vf=50 Hzϕ=0.20 Wb

Q: Which of the following is the correct equation for calculating the rated current for a single-phase…

Q: mber of turns on the primary and dary windings of a 1-o transformen d 40 respectively. If the…

Q: Three single phase 11000/220 V transformers are connected to form 3-phase transformer bank. High…

A: Given- V1=11,0003 V (star connection), V2=220 V (delta connection), To Find- Voltage ratings and…

Concept explainers

Three-Phase Transformers

Three-segment transformers are a type of transformer used to transform voltages of electrical systems into three ranges. Two type transformers are shell-type transformer and core type transformer. In brief, it could be described because of the exquisite kinds of configurations.

Transformer

Ever since electricity has been created, people have started using it in its entirety. We see many types of Transformers in the neighborhoods. Some are smaller in size and some are very large. They are used according to their requirements. Many of us have seen the electrical transformer but they do not know what work they are engaged in.

Question

A three phase power transformer having a line voltage ratio of 400 V
to 33 kV is connected in star-delta. The C.T.s on 400 V side have current ratio as
1000/5. What must be the C.T. ratio on 33 kV side.
Assume current on 400 V side of transformer to be 1000 A.
C.T.
secondaries
in delta
p
5A
oooo
oooo
5√3 A
-0000
0000
0000
0000
Star-delta
transformer
0000
5√3 A
vooo
னள்.
m
reeee
p
C.T. secondaries
in star
5√3 A
0000

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.

Similar questions

2. An ideal 1-phase transformer has turns ratio 5:1, with 120Vac primary. A resistive load of 12 Ohms is connected to the secondary. What is the secondary voltage? What is the secondary current? What is the primary current?
In no load phasor diagram of practical transformer, the magnetizing current is with flux 4. In phase 90 Degree out of phase Lagging by 60 Degrees Leading by 60 Degrees
B- the eddy current losses of 400V, 50 Hz transformer is 1600W and the total iron losses i 2500W. calculate the iron losses at 200V, 25 Hz.
6-Writ the procedure of no load test of Single phase transformer and draw the connection diagram of this test
solve with transformators topic With a ratio of turns of 10 to 1 and an input voltage of 120V and output 12 V, propose a system of transformer and turns
Please do not write the answer on the paper
What is transformer di not use chatgpt
Q/A single-phase transformer with a capacity of 100 kVA and a voltage of 2000/400 and the equivalent circuit elements are: As follows R1 = 0.1 02 x1 = 0.2 2 R2 = 0.25 2 X2 = 0.75 2 RO = 500 XO = 150 Q and feeds a load of 90 kVA at a voltage of 2000 volts and a power factor of 8.0 in delay. Calculate voltage and current Primary Royl ww JX eql
A quarter wave transformer is connected between a transmission line of characteristic impedance of 50 ohm and load impedance of 100 ohm. What will be the characteristic impedance of the quarter wave transformer?
2) A single phase transformer is rated 110/440 V, 2.5 KVA. The impedance measured from the low voltage side is 0.062.Determine the impedance and admittance in per unit.
What are the problems associated with Y-Y three phase transformer connection?
Three single phase 11000/220 V transformers are connected to form 3-phase transformer bank. High voltage side is connected is star, and low voltage side is in delta. What are the voltage ratings and turn ratio of 3-phase transformer? 19052 a) V, 50 220 11000 381 c) V, 50 √3 b) d) 19052 220 V, 50√3 11000 220 7.50