An industrial plant is supplied by a power utility company with voltage of 7.97 kV. To monitor the plant's performance and consumption, the utility company installed a potential transformer (PT) and a current transformer (CT) at the plant's premises. The specs of the transformers are as shown on Figure 1. The plant is drawing 2000 kW at 0.90 pf lagging,. Industrial Plant IA CB A VL = 7.97 kV PT CT (V) 1 kn 250 ΜΩ PT Specs: 7970-V:120-V, 60 Hz X₁ = 1721 02, R₂ = 1378 , X = 782 k X₂ = 1897 22, R₂ = 1602 (referred to its primary) CT Specs: 200-A:5-A, 60 Hz X, = 745 μΩ, R, = 136 μΩ, Χ = 307 ΜΩ X'₂ = 813 μn, R'₂=128 un (referred to its primary) ...

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
Chapter2: Fundamentals
Section: Chapter Questions
Problem 2.22P: The real power delivered by a source to two impedances, Z1=4+j5 and Z2=10 connected in parallel, is...
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What is the magnitude of the line current drawn by the plant in amperes?

An industrial plant is supplied by a power utility company with voltage of 7.97 kV. To monitor the plant's performance and
consumption, the utility company installed a potential transformer (PT) and a current transformer (CT) at the plant's premises. The
specs of the transformers are as shown on Figure 1. The plant is drawing 2000 kW at 0.90 pf lagging,.
Industrial
Plant
CBA
VL = 7.97 kV
PT
CT
1 ΚΩ
250 μΩ
PT Specs:
7970-V:120-V, 60 Hz
X, = 1721 Ω, R, = 1378 Ω, Χ = 782 ΚΩ
X'₂ = 1897 02, R₂ = 1602 2 (referred to its primary)
CT Specs:
200-A:5-A, 60 Hz
X, = 745 μΩ, R, = 136 μΩ, X = 307 ΜΩ
X'₂ = 813 μn, R'₂=128 µn (referred to its primary)
Transcribed Image Text:An industrial plant is supplied by a power utility company with voltage of 7.97 kV. To monitor the plant's performance and consumption, the utility company installed a potential transformer (PT) and a current transformer (CT) at the plant's premises. The specs of the transformers are as shown on Figure 1. The plant is drawing 2000 kW at 0.90 pf lagging,. Industrial Plant CBA VL = 7.97 kV PT CT 1 ΚΩ 250 μΩ PT Specs: 7970-V:120-V, 60 Hz X, = 1721 Ω, R, = 1378 Ω, Χ = 782 ΚΩ X'₂ = 1897 02, R₂ = 1602 2 (referred to its primary) CT Specs: 200-A:5-A, 60 Hz X, = 745 μΩ, R, = 136 μΩ, X = 307 ΜΩ X'₂ = 813 μn, R'₂=128 µn (referred to its primary)
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What is the magnitude in kilo-ohms of the PT?

 
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