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What is the purpose of conducting Open Circuit (OC) test? 2. What is the purpose of conducting Short Circuit (SC) test? 3. What are the classifications of Core Loss and Copper Loss?

What is the purpose of conducting Open Circuit (OC) test? 2. What is the purpose of conducting Short Circuit (SC) test? 3. What are the classifications of Core Loss and Copper Loss?

Introductory Circuit Analysis (13th Edition)
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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1. What is the purpose of conducting Open Circuit (OC) test?

2. What is the purpose of conducting Short Circuit (SC) test?

3. What are the classifications of Core Loss and Copper Loss?

 

MIEE 211ON Elecirical Technology Exercise - 4 MIEE 211ON Electrical Technology Exercise - 4 Observation: L. Table for Open Circuit Test: HL. Table for Caleulating the Eficiency of Transformer: Measared Values Calculated Values Full Load Power Losses Power fuctor at no- No-Load Core Lonss Apparent Power or VA Rating of the Transformer Full Load Outpet Power at Unity Power Factor PourPer VA Rating x1 Full Load Inpat Power at Unity Power Factor V Phase angle, do = cospfo) Vi load, PcoRe, W. (Piess- W.- Wg) Table Vals A Veh Wam Pfo- cose Pirer Pourrur Poss nd Copper k vat n T 130, 8v 0,46 62,088° 22.,2A 0,13A 13,4 w O,468 VA Wam Wa War Core Loss Component of the No Load Current le- locasea 0,060 521,608 501. 608 60,2 571,808 Magnetizing Component of the No Load Current Ir = lostnd. Efficiency of the Transformer at Full Load POUTPUT x 100 521.608 x lee 191,22 % 571.808 Efficiency = Draw the No-load phasor diagram (for scale), indicating the mcasured and calculated values. Model Cakulation: 1. Pourur (at Unity power factor) - V2 f s 23e,8 x2,26 52, 602 w 2. Pross = We +Wse 13,4 +368 s 60,2w 3. Peorur (at Unity power factor) Aut Aut + Ples 1 621.68 +So, 2 5 571,808 w Flux, Im 4. % Efficiency 571. 8e8 - 91,22 % * Conclusion: 1. What is the purpose of conducting Open Circuit (OC) test? IL. Table for Short Circuit Test: Short circuit current. L gof Tranefermer Rad vohage 2,27A 2. What is the purpose of conducting Short Circuit (SC) test? 220 Measured Values Calculated Values Fell Load Total Resistance Lenkage Renetance Impedance V'sc Ise Vsc Ise Copper Loss Peoer, Ws Iscz X; = -R- 3. What are the classifications of Core Loss and Copper Loss? Vo Amp Amp Wam Che Oen 158 2.32 36.8 2,26 6,81 7.20 Page 4 of 5 Page Sofs University of Technology and Applied Sciences - lBRI University of Technology and Applied Sciences - IBRI
Transcribed Image Text:MIEE 211ON Elecirical Technology Exercise - 4 MIEE 211ON Electrical Technology Exercise - 4 Observation: L. Table for Open Circuit Test: HL. Table for Caleulating the Eficiency of Transformer: Measared Values Calculated Values Full Load Power Losses Power fuctor at no- No-Load Core Lonss Apparent Power or VA Rating of the Transformer Full Load Outpet Power at Unity Power Factor PourPer VA Rating x1 Full Load Inpat Power at Unity Power Factor V Phase angle, do = cospfo) Vi load, PcoRe, W. (Piess- W.- Wg) Table Vals A Veh Wam Pfo- cose Pirer Pourrur Poss nd Copper k vat n T 130, 8v 0,46 62,088° 22.,2A 0,13A 13,4 w O,468 VA Wam Wa War Core Loss Component of the No Load Current le- locasea 0,060 521,608 501. 608 60,2 571,808 Magnetizing Component of the No Load Current Ir = lostnd. Efficiency of the Transformer at Full Load POUTPUT x 100 521.608 x lee 191,22 % 571.808 Efficiency = Draw the No-load phasor diagram (for scale), indicating the mcasured and calculated values. Model Cakulation: 1. Pourur (at Unity power factor) - V2 f s 23e,8 x2,26 52, 602 w 2. Pross = We +Wse 13,4 +368 s 60,2w 3. Peorur (at Unity power factor) Aut Aut + Ples 1 621.68 +So, 2 5 571,808 w Flux, Im 4. % Efficiency 571. 8e8 - 91,22 % * Conclusion: 1. What is the purpose of conducting Open Circuit (OC) test? IL. Table for Short Circuit Test: Short circuit current. L gof Tranefermer Rad vohage 2,27A 2. What is the purpose of conducting Short Circuit (SC) test? 220 Measured Values Calculated Values Fell Load Total Resistance Lenkage Renetance Impedance V'sc Ise Vsc Ise Copper Loss Peoer, Ws Iscz X; = -R- 3. What are the classifications of Core Loss and Copper Loss? Vo Amp Amp Wam Che Oen 158 2.32 36.8 2,26 6,81 7.20 Page 4 of 5 Page Sofs University of Technology and Applied Sciences - lBRI University of Technology and Applied Sciences - IBRI
MIEE 211ON Electrical Technology Exercise - 4 MIEE 211ON Electrical Technology Exercise - 4 Aim: Procedure for OC Test: a) To determine the Transformation Ratio of Single-Phase Transformers. b) To perform the Open Circuit (0C) Test and Short Circuit (SC) Test on a Single-Phase Transformer. c) To pre determine the Power Losses and Efficiency of Single-Phase Transformer, by conducting OC and SC test on a single-phase transformer. 1. Make the connections as shown in the circuit diagram. 2. Keep the voltage knob of the AC supply (Auto Transformer) in minimum condition and then switch ON the AC supply. 3. Tum the 2-pole switch in ON condition. 4. Increase the voltage of the AC power supply until the voltmeter on the supply side shows the rated voltage of the transformer (e 220 V). The rated voltage is writen on the data plaie of the Apparatus required: transformer. Specification / Range booVA SI. No Name of the Apparatus Quantity Phase Wasfaimer 5. Record the required meter readings, shown in the tablk. 6. Make the necessary calculation and draw the graphs. Digtel wodmetet Circuit Diagram for SHORT CIRCUIT (SC) Test: 3oov-54 Pigt al wathmeter Voltmeter Buo v, 64 2 l0, Boold A mmeter Lo.5)A Phase Auto - Trans fornet Single Phade Pube - Comnecting wites Circuit Diagram for OPEN CIRCUT (OC) Test: Dylal uatmelet c lio T- Phase Auto-Wanidamet 1-Phase Tranboymate Volkudat Procedure for SC Test: Spe VA 1. Make the conections as showa in the circuit diagram. 2. Keep the voltage knob of the AC supply (Auto Transformer) in minimum condition and then switch ON the AC supply. 3. Turn the 2-pole switch in ON condition. 4. Increase the voltage of the auto transformer tili the ammeter (Iscz) in the secondary side of the transformer shows the fult load current (The full load current rating is written on the data plate of the transformer). 5. Record the required meter readings, shown in the table. L. Phate AudotYandatinet Page 2 ofs Page 3 ofs University of Technology and Applicd Sciences - IBRI Liniversity of Technology and Applied Sciences - IBRI
Transcribed Image Text:MIEE 211ON Electrical Technology Exercise - 4 MIEE 211ON Electrical Technology Exercise - 4 Aim: Procedure for OC Test: a) To determine the Transformation Ratio of Single-Phase Transformers. b) To perform the Open Circuit (0C) Test and Short Circuit (SC) Test on a Single-Phase Transformer. c) To pre determine the Power Losses and Efficiency of Single-Phase Transformer, by conducting OC and SC test on a single-phase transformer. 1. Make the connections as shown in the circuit diagram. 2. Keep the voltage knob of the AC supply (Auto Transformer) in minimum condition and then switch ON the AC supply. 3. Tum the 2-pole switch in ON condition. 4. Increase the voltage of the AC power supply until the voltmeter on the supply side shows the rated voltage of the transformer (e 220 V). The rated voltage is writen on the data plaie of the Apparatus required: transformer. Specification / Range booVA SI. No Name of the Apparatus Quantity Phase Wasfaimer 5. Record the required meter readings, shown in the tablk. 6. Make the necessary calculation and draw the graphs. Digtel wodmetet Circuit Diagram for SHORT CIRCUIT (SC) Test: 3oov-54 Pigt al wathmeter Voltmeter Buo v, 64 2 l0, Boold A mmeter Lo.5)A Phase Auto - Trans fornet Single Phade Pube - Comnecting wites Circuit Diagram for OPEN CIRCUT (OC) Test: Dylal uatmelet c lio T- Phase Auto-Wanidamet 1-Phase Tranboymate Volkudat Procedure for SC Test: Spe VA 1. Make the conections as showa in the circuit diagram. 2. Keep the voltage knob of the AC supply (Auto Transformer) in minimum condition and then switch ON the AC supply. 3. Turn the 2-pole switch in ON condition. 4. Increase the voltage of the auto transformer tili the ammeter (Iscz) in the secondary side of the transformer shows the fult load current (The full load current rating is written on the data plate of the transformer). 5. Record the required meter readings, shown in the table. L. Phate AudotYandatinet Page 2 ofs Page 3 ofs University of Technology and Applicd Sciences - IBRI Liniversity of Technology and Applied Sciences - IBRI
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