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a. Figure 2 shows a single line diagram of power system distribution zone and a table 2 is the characteristic of the figure 2. i. Table 2: Power system characteristic of figure 2. Zone A Zone B 600/5 300/5 700 320 ii. iii. HV SUPPLY O iv. 11 KV V. CT Ratio Load Current (A) The transformer at the High Voltage (HV) supply is having current flow of 6000A when short circuit occurs phase to phase located at zone D. Overcurrent relays are located at location A to D are set using standard inverse curve, calculate: Plug setting multiplier, PSM. Relay operating time, ROT. Figure 2: Single line diagram of radial power system D |im| Time multiplier setting, TMS Relay actual operating time, RCOT Zone C 200/5 190 Zone D 100/5 75 Discuss and compare the sensitivity values of the over-current relays when they are set using very inverse curve.

a. Figure 2 shows a single line diagram of power system distribution zone and a table 2 is the characteristic of the figure 2. i. Table 2: Power system characteristic of figure 2. Zone A Zone B 600/5 300/5 700 320 ii. iii. HV SUPPLY O iv. 11 KV V. CT Ratio Load Current (A) The transformer at the High Voltage (HV) supply is having current flow of 6000A when short circuit occurs phase to phase located at zone D. Overcurrent relays are located at location A to D are set using standard inverse curve, calculate: Plug setting multiplier, PSM. Relay operating time, ROT. Figure 2: Single line diagram of radial power system D |im| Time multiplier setting, TMS Relay actual operating time, RCOT Zone C 200/5 190 Zone D 100/5 75 Discuss and compare the sensitivity values of the over-current relays when they are set using very inverse curve.

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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Figure 2 shows a single line diagram of power system distribution zone and a table 2 is the characteristic of the figure 2. a. HV SUPPLY A B D 11 KV Figure 2: Single line diagram of radial power system Table 2: Power system characteristic of figure 2. Zone A 600/5 Zone B 300/5 Zone C 200/5 Zone D 100/5 CT Ratio Load Current (A) 700 320 190 75 The transformer at the High Voltage (HV) supply is having current flow of 6000A when short circuit occurs phase to phase located at zone D. Overcurrent relays are located at location A to D are set using siandard inverse curve, calculate: i. Plug setting multiplier, PSM. ii. Relay operating time, ROT. iii. Time multiplier setting, TMS iv. Relay actual operating time, RCOT Discuss and compare the sensitivity values of the over-current relays when they are set using very inverse curve. V.
Transcribed Image Text:Figure 2 shows a single line diagram of power system distribution zone and a table 2 is the characteristic of the figure 2. a. HV SUPPLY A B D 11 KV Figure 2: Single line diagram of radial power system Table 2: Power system characteristic of figure 2. Zone A 600/5 Zone B 300/5 Zone C 200/5 Zone D 100/5 CT Ratio Load Current (A) 700 320 190 75 The transformer at the High Voltage (HV) supply is having current flow of 6000A when short circuit occurs phase to phase located at zone D. Overcurrent relays are located at location A to D are set using siandard inverse curve, calculate: i. Plug setting multiplier, PSM. ii. Relay operating time, ROT. iii. Time multiplier setting, TMS iv. Relay actual operating time, RCOT Discuss and compare the sensitivity values of the over-current relays when they are set using very inverse curve. V.
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