QUS 1ⓇQUALITYSORGEL THREE PHASE GENERAL PURPOSE TRANSFORMERkVA:112.5. 1234CAT NO: HM112T255NFCUH.V.:480Y/277 H.V. AMPS:135.3L.V.: 208ZZ/120 L.V: AMPS: 312.3200 DEGREE C INS SYSTEM, 95STYLE NO: 34749-17782-001DATE CODE:0849 ENCLOSURE: TYPE 2 EFF. @ 35% 98.2H1H2HOH3X2XQHOХ0H2SQUARE D COMPANYMEETS TP-1-2002 EFFICIENCYHz: 60%IZ:4.9WT:620 CLASS:AADEGREE C RISE TYPE:SOHIمثلا مسسللنا مسسسللHJ234JUMPER CONNECTIONTAP VOLTS504480456432LISTED POWERTRANSFORMER (₁)CT$22A65TS20AMADE IN USAMB2US The nameplate for the large transformer in the lab is shown below. This transformer suppliesthe lab, as well as other classrooms in the building.1. If the supply voltage was low at 455 V instead of 480 V, how could you ensure that thesecondary voltage was close to 120/208 V?2.Assuming an infinite bus on the supply side, use the quick bolted fault calculation to givethe low-side bolted fault current.3.If the transformer is carrying full-load at rated ambient temperature and altitude, what wouldyou expect the inside temperature at the hottest spot of the transformer to be?

1. You want the secondary voltage to be close to 120/208 V, you can adjust the transformer tap…

Answered: QUS 1 Ⓡ QUALITY SORGEL THREE PHASE…

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...

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Show all steps and working please. You have been hired as an engineering consultant to diagnose an overheating and low output voltage problem with a three-phase transformer. The service technicians informed you that the transformer has a solid nickel core, insulated aluminum windings and a single phase of the transformer is rated at 50 kVA, 6900/400 V, 60 Hz. The transformer cannot be disconnected for open and short circuit testing and only the input lines and output outlets are accessible for current and voltage measurements. (a) The following measurements were taken after and during working hours when all the electrical devices were off and on,respectively. No load condition: Input Phase Current = 3∠−60°A, Output Voltage = 400∠0°V Load condition: Input Phase Current = 8.45∠−37.35°A, Output Voltage = 370∠−0.64°V Assuming the input voltage is maintained at its rated value, calculate the modelled internal parameters Ro, Xm, Reqand Xeq of the transformer referred to the high voltage…
A 4.6-kVA, 308 / 155 -volt distribution transformer has the following equivalent resistance and leakage-reactance values referred to the primary: rep = 1.5 ohm; xep = 7.5 ohms. The core losses of this transformer amount to 500 watts. If this transformer is operating at full-load unity power factor, what is its percent efficiency?
If the primary winding of a transformer needs 1200 turns when used to 220-volt source, how many turns are needed in the secondary side to obtain 50 volts assuming that the transformer has 100% efficiency?
A transformer with 10: 1 rato and rated at 50 KVA, 2400 7 240 V, 50 Hr is used to step down the voltage of a distrbution system. The low-tension voltage is to be kept constant at 240 V i. What load impedance connected to the low-tension side will be loading the transformer fully at 0.8 power factor lagging? ii.What is the value of this impedance referred to high-tension side? iii. What is the value of this impedance referred to high-tension side?
I ONLY NEED B PART III ANSWERED. NO OTHER PART OF THE QUESTION. You have been hired as an engineering consultant to diagnose an overheating and low output voltage problem with a three-phase transformer. The service technicians informed you that the transformer has a solid nickel core, insulated aluminum windings and a single phase of the transformer is rated at 50 kVA, 6900/400 V, 60 Hz. The transformer cannot be disconnected for open and short circuit testing and only the input lines and output outlets are accessible for current and voltage measurements. (a) The following measurements were taken after and during working hours when all the electrical devices were off and on,respectively. No load condition: Input Phase Current = 3∠−60°A, Output Voltage = 400∠0°V Load condition: Input Phase Current = 8.45∠−37.35°A, Output Voltage = 370∠−0.64°V Assuming the input voltage is maintained at its rated value, calculate the modelled internal parameters Ro, Xm, Reqand Xeq of the transformer…
From the topic of insulation resistance testing of a transformer,(Layout of the Analog Insulation – Continuity Tester) the insulation of the equipment tested is healthy?Justify
1-) A phase transformer with equivalent circuit parameters R1 = 1 ohm, R2 '= 1.4 ohm, X1 = 2 ohm, X2' = 1.8 ohm, Xm = 1100 ohm, Rre = 6400 ohm, the idle primary voltage is 220 volts and the secondary voltage is 22 volts. a.) Calculate the actual values of the parameters of the secondary side. b.) Calculate the idle running iron and magnetizing currents and transformer losses in idle operation. c.) The transformer is connected to the network whose voltage does not change and it feeds a load with impedance Zy = 0.5 + j0.3 ohms. In this operating condition, calculate the secondary voltage of the transformer and the active and reactive powers drawn from the secondary side by using the T equivalent circuit. ( please solve them all,thanks..)
1. A voltage transformer has 1500 turns of wire on its primary coil and 500 turns of wire for its secondary coil. What will be the turns ratio (TR) of the transformer? 2. If 240 volts is applied to the primary winding of the same transformer in problem no. 1, what will be the resulting secondary no load voltage? 3. Calculate the voltage output by the secondary winding of a transformer if the primary voltage is 35 volts, the secondary winding has 4500 turns, and the primary winding has 355 turns.
1. A voltage transformer has 1500 turns of wire on its primary coil and 500 turns of wire for its secondary coil. What will be the turns ratio (TR) of the transformer? 2. If 240 volts is applied to the primary winding of the same transformer in problem no. 1, what will be the resulting secondary no load voltage? Answer question #2 only, Thankyou
A 10 kVA, single-phase transformer has a turns ratio of 12:1 and is supplied from a 2.4 kV supply.The full load secondary current of the transformer is ? A transformer has an open circuit voltage of 120 volts. A tap-changing device operates when theregulation falls below 2%. The load voltage at which the tap-changer operates is? A 2000 VA transformer has a primary winding resistance of 0.3 Ω and a secondary winding resistanceof 0.0012 Ω. The primary and secondary voltages are 200 V and 100 V respectively. The full loadcopper loss is ?
1.A two-winding single-phase transformer is rated 220 volts at its primary side and 110 volts at its secondary side. It is supplied by an AC source of 240 volts on its primary side and serves a load with resistance of 10 ohms (and no reactance) on its secondary side. Assume an ideal transformer. What is the current at the primary side?
Please only answer b part iii. Thank you. You have been hired as an engineering consultant to diagnose an overheating and low output voltage problem with a three-phase transformer. The service technicians informed you that the transformer has a solid nickel core, insulated aluminum windings and a single phase of the transformer is rated at 50 kVA, 6900/400 V, 60 Hz. The transformer cannot be disconnected for open and short circuit testing and only the input lines and output outlets are accessible for current and voltage measurements. (a) The following measurements were taken after and during working hours when all the electrical devices were off and on,respectively. No load condition: Input Phase Current = 3∠−60°A, Output Voltage = 400∠0°V Load condition: Input Phase Current = 8.45∠−37.35°A, Output Voltage = 370∠−0.64°V Assuming the input voltage is maintained at its rated value, calculate the modelled internal parameters Ro, Xm, Reqand Xeq of the transformer referred to the high…

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