Answered: o monitor the voltage of a 230 kV line,…

o monitor the voltage of a 230 kV line, PTs are to be installed. The PTs are to be connected delta-delta. The desired secondary voltage is 115 V, 3-phase. What shall be the PTs voltage ratio?

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.33P: Consider the three single-phase two-winding transformers shown in Figure 3.37. The high-voltage...

See similar textbooks

Related questions

Q: Balanced 3-Phase Circuit) 1-What is the relationship between phase and line quantities in balanced…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: A three-phase four-wire system has unbalanced connected loads that draws 7 amps from line A, 16…

Q: The ratings of a 3-phase circuit breaker are 1000 A. 500 MVA, 66 kV, 3 seconds. Then find (1) Rated…

Q: The minimum number of wattmeter(s) required for measuring power of 3-phase unbalanced load is

A: Minimum no of Wattmeter required for measures power of 3 phase unbalanced load ? According to…

Q: Q1: In a 3-phase, 4-wire system, the currents in R, Y and B lines under abnormal conditions of…

Q: 3-phase y connected balance load impedance of 3+j2 and a supply of 460 volts, 60 Hz mains. Calculate…

A: A 3-ph, Y- connected system has, Load impedance, Z= 3 + j 2 ohm Supply voltage, Vs = 460 V…

Q: b) Why Generation Voltage Levels are low in the range of 11 kV/ 33 kV etc?

A: The explanation is as follows.

Q: Over sting of 3- phase transmission line has 4 insulators and Ce=0.15C. If the voltage between the…

Q: Why Generation Voltage Levels are low in the range of 11 kV/ 33 kV etc?

A: It is cheaper to produce at a lower voltage because insulation requirement at low voltage level is…

Q: The line-to-line voltages of a three-phase, four-wire system are the following: Van = 300cis(-25);…

A: In this question we need to find a positive sequence component of Vab in volts

Q: Three equal resistors are connected in delta across 240 volts, 3-phase lines. To what value should…

A: In delta connection Vline = Vphase

Q: In a 3-phase balanced star or delta system, the least number of wattmeter essential to measure the…

A: In the three phase balanced star of delta system, the least number of wattmeter essential to measure…

Q: The most common system for .secondary distribution is 3-phase, . . wire system. *

A: There are two types of distribution is present, primary distribution and secondary distribution.

Q: A three phase system have a sending end voltage 410 volts and receiving end voltage 365 volts. The…

A: From the lossless transmission line power equation

Q: Three 10:1 transformers are connected delta to wye for stepping up the 2300-vilt three phase source.…

Q: 1. How do voids in the insulation cause breakdown of the cable? 2. Discuss why the transmission…

Q: 4, 11 A 16/ KVA, 13200:240 volt single phase R. foad trans former has 0.01035 ohm and X" with 13,200…

A: In this question, We need to determine the ZR and Zx , copper losses, and efficiency at the 80%…

Q: A 415V TPN busbar rising main chipped to a surface is to provide a 240V supply to each of 8…

A: Solution- The circuit arrangement from the above data- It is showing how each flat must be…

Q: A three phase alternator 50 MVA, 11KV, exposure to types of faults are fallowing: Balanced…

A: In Three phase fault, fault current = no load voltage/ X1. In line to line fault , Fault current =…

Q: The PTs are to be connected delta-wye, to monitor the voltage of a 250 kV line, PTs are to be…

Q: Electrical Engineering a 480/277 volt branch circuit is to be installed with 1/0 awg thw, copper…

A: AWG stands for American wire gauge, they are set as a standard for copper wire conductors. A wire…

Q: 46. Three 30:1 step-down transformers are connected Y-A for stepping down the 132,000-volt…

Q: draw single line diagram of 11 kv substation with explanation and not copied from anywhere

A: 11 kV substation Important function of substation is to collect energy transmitted at high voltage…

Q: can you help me

Q: Use nodal analysis to determine the value of current in the network shown below. Assume direction of…

A: We will apply KCL at two nodes than we will write two equations in terms of node voltages . Solving…

Q: A balanced twelve-phase star connected load has a phase voltage of magnitude 180 volts. What is the…

Q: Explain in detail the relation between phase and line voltages and currents in a star connected…

Q: A balanced four-phase star connected load has a phase voltage of magnitude 150 volts. What is the…

A: Answer shown below.

Q: In a three phase star connected system, the line voltage is 330.2 volt, find the R phase voltage?

Q: The ratings of a 3-phase circuit breaker are 1000 A. 500 MVA, 66 kV, 3 seconds. Then find (1) Rated…

Q: In a 3 phase 4 wire system, the line voltage is 440v and non inductive loads of 20, 16, and 10kw are…

A: Given: Loads-20kW, 16kW and 10kWVoltage,VLine=400VSo,Phase Voltage, Vph=4003V

Q: Show all steps and working please. You have been privately contacted to rewire a site. During a…

A: Advantages of using three single phase transformer instead of composite three phase transformer-…

Q: 2. A circuit breaker is rated at 1500 A, 2000 MVA, 33 kV, 3 sec, 3-phase oil circuit breaker.…

A: The rated normal current of circuit breaker = rated current of circuit breaker= 1500 A. Breaking…

Q: i. Given the concept of Circuit Breakers discuss five types of circuit breakers and their principle…

A: Given questions are three individual questions. As per Bartleby expert policy, only one individual…

Q: Draw the equivalent circuit for a three phase, three wire system and label the parameters..

A: The solution is given below

Q: Draw with explain the single line diagram of a power system with all protatctive elements

A: Protective Elements:- Lightning Arrester :-It is a device used in electrical power systems to…

Q: Show all steps and working please. You have been privately contacted to rewire a site. During a…

A: Note: As per our policy, I have attempted the first three subquestions. Given data: Vp=400 VVs=230…

Q: draw single line diagram of 66 kv substation with explanation and not copied from anywhere

A: 66 kV substation Important function of substation is to collect energy transmitted at high voltage…

Q: 45. Three 10:1 transformers are connected A-Y for stepping up the 2,300-volt three- phase source.…

A: The solution is given below .

Q: A 415V TPN busbar rising main chipped to a surface is to provide a 240V supply to each of 8…

A: Answer - Following is the circuit arrangement showing how each flat must be connected to the rising…

Q: III. Procedures: BLOCK DIAGRAM Interconnect the electrical components per set in a block diagram…

A: Given two sets with generators and transformers of different ratings. They are to be interconnected.

Q: Ex.3: For the relay (R1) in the system shown determine the plug setting multiplier PSM. If the…

A: In this question, Find the plug setting multipler We know, the mathematical expression of the PSM…

Q: Q1: In a 3-phase, 4-wire system, the currents in R, Y and B lines under abnormal conditions of…

A: The return current in the neutral wire is 81.88√4.7 Ampere. The detailed solution is provided below.

Q: ission line operating at 10 KV onnected to the generating stati reactance of 5%. The bus bars

A: Ina power system for doing an analysis such as fault analysis fault current must be calculated. To…

Q: A balanced twelve-phase star connected load has a phase voltage of magnitude 230 volts. What is the…

Q: Three 10W resistors are connected in delta on 208V (line-to-line), 3-phase line. (a) What is the…

A: Given 3 delta connected resistors. In delta connection line voltage is equal to phase voltage.

Q: Three 1:10 transformers are connected delta-wye for stepping up the 2,300-volt three phase source.…

Q: The following data are obtained when open-circuit and short-circuit tests are performed on a…

A: open circuit test is O.C and short circuit test is S.C this test determine the core loss , copper…

Q: Draw & Explain the of 11KV Substation. Single line diagram

A: Components of Substation Lighting arrester Fuse Isolator' Transformer Circuit breaker Relays…

Concept explainers

Single Phase AC Circuit

Alternating Current (AC) is a type of electric power in which the electric current changes, both in magnitude and direction, at regular intervals. This AC Circuits can deliver power in either a Single Phase system or a Three Phase system.

Question

o monitor the voltage of a 230 kV line, PTs are to be installed. The PTs are to be connected delta-delta. The desired secondary voltage is 115 V, 3-phase. What shall be the PTs voltage ratio?

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 by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Analysis of Single Phase and Three Phase System

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

Three 20-kVA, 24000/277-V distribution transformers are connected in A-Y. The open-circuit test was performed on the low voltage side of this transformer bank, and the following data were recorded: Viine, OC = 480 V ljine, OC = 4.1 A P3p, Oc = 945 W The open-circuit test was performed on the low voltage side of this transformer bank, and the following data were recorded: Viine, sc = 1400 V line, SC = 1.8 A P39. SC = 912 W What is the magnetization reactance of this transformer, XM, in pu?
Why transformer rating in kva
The main advantage of A.C. systems over D.C. systems is: a) transformers can be used to change D.C. to A.C. IRtransformers can be used to change voltage levels. b) , 00 transformers can be used to change A.C. to D.C. d) ) transformers can be used to change power levels.
Why transformers are rated in kVA
Three 20-kVA, 24KV/277V distribution transformers are connected in A-Y. The open circuit test was performed on low-voltage side of this three-phase transformer bank and the following data was recorded: Vine,OC = 480 V, Ijine.Oc = 4.25 A, and P3p. OC = 950 W. The short-circuit test was performed on the high-voltage side and the following data were recorded: Vine sc = 1400V, Iine, Sc = 2A, and P3p sc = 900 W. Find the equivalent circuit for this transformer bank b. Find the voltage regulation for this transformer bank at the rated load and 0.9 pf lagging.
Consider the three single-phase two-winding transformers shown in Figure 3.37. The high-voltage windings are connected in Y. (a) For the low-voltage side, connect the windings in , place the polarity marks, and label the terminals a, b, and c in accordance with the American standard. (b) Relabel the terminals a, b, and c such that VAN is 90 out of phase with Va for positive sequence.
A voltage transformer in Figure 8 has 1,500 turns of wire on its primary winding and 500 turns of wire for its secondary winding. What will be the turns ratio, a of the transformer. If 240 volts is applied to the primary winding, what will be the resulting secondary voltage. And if a 400 n resistor is connected to the secondary winding, what are the values of current Is and Ip. primary Vp Transformer Core NF Ns Figure 8 secondary Vs
Refer to Figure 8-31 to answer the following questions. Assume that a line voltage of 12,470volts is connected to the primary of the transformer and the line voltage of the secondary is 480volts. What is the turns ratio of the transformer? Assume the load has an impedance of 6Vper phase. What is the secondary line current? How much current is flowing in the secondary winding? How much current is flowing in the primary winding? What is the line current of the primary?
2. The one-line diagram of a power system is shown in the figure. The three-phase power and line-line ratings are given below: Generator 1:50 MVA, 22 kV, X = 24% Generator 2:50 MVA, 22 kV, X = 24% Synchronous Motor: 15 MVA, 4.4 kV, X = 22.5% Transformer 1:40 MVA, 110Y/22A kV, X = 6.4% Transformer 2:40 MVA, 110Y/22A kV, X=6.4% 3-ph load: Delta connected, 18+ j24 0 per phase ww ww. The three-phase ratings of the three-winding transformer T3 are: Primary: Secondary: Tertiary: Y-connected Y-connected Y-connected 80 MVA, 110 kV 60 MVA, 22 kV 20 MVA, 4.4 kV Neglecting resistance, the leakage impedances are: Zps = 9.6% on 80 MVA, 110 kV Zpi = 7.2% on 80 MVA, 110 kV Z = 10% on 60 MVA, 22 kV Choose as base 100 MVA, 20 kV in the generator 1 circuit. Draw the complete per- unit impedance/reactance diagram. Line 1 Line 2 G2 i 42.35 a j 42.35 a T2 3-ph load
For performing dielectric-strength tests on insulating materials, two transformers are connected in a A. parallel combination.B. polyphase arrangement.C. series combination. D. cascade arrangement.
74. The eddy-current loss in a 6.9 kV, 50 Hz transformer is 220 W. What will be the eddy-current loss of this transformer if it is to be connected across a 6.6 kV, 60 Hz source? A. 201 W C. 234 W B. 224 W D. 212 W
a)Why are transformers generally connected in parallel at a substation?b)What conditions must be met for two transformers to be paralleled?c)Draw the phase relationship and connection diagram for Dd0 connection andYy6