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The surge impedance value of overhead lines is
- a)50 to 100 ohms
- b)400 to 600 ohms
- c)800 to 1000 ohms
- d)10 to 50 ohms
Correct answer is option 'B'. Can you explain this answer?
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The surge impedance value of overhead lines isa)50 to 100 ohmsb)400 to...
Surge Impedance Value of Overhead Lines
The surge impedance value of overhead lines is typically in the range of 400 to 600 ohms.
Explanation:
- What is Surge Impedance: Surge impedance is the characteristic impedance of a transmission line when it is excited by a surge or transient signal.
- Importance: Surge impedance is crucial in understanding the behavior of transmission lines during transient events such as lightning strikes or switching operations.
- Range for Overhead Lines: The surge impedance value for overhead lines falls in the range of 400 to 600 ohms. This range is determined by the physical characteristics of the overhead conductors and the surrounding environment.
- Factors Affecting Surge Impedance: The surge impedance of overhead lines is influenced by factors such as conductor spacing, line length, and the dielectric properties of the surrounding medium.
- Significance: Understanding the surge impedance value helps in designing protection systems for overhead lines to mitigate the effects of transient events and ensure the reliability of the power transmission network.
In conclusion, the surge impedance value of overhead lines plays a vital role in ensuring the proper functioning and protection of the power transmission system, with a typical range of 400 to 600 ohms for overhead lines.
The surge impedance value of overhead lines is typically in the range of 400 to 600 ohms.
Explanation:
- What is Surge Impedance: Surge impedance is the characteristic impedance of a transmission line when it is excited by a surge or transient signal.
- Importance: Surge impedance is crucial in understanding the behavior of transmission lines during transient events such as lightning strikes or switching operations.
- Range for Overhead Lines: The surge impedance value for overhead lines falls in the range of 400 to 600 ohms. This range is determined by the physical characteristics of the overhead conductors and the surrounding environment.
- Factors Affecting Surge Impedance: The surge impedance of overhead lines is influenced by factors such as conductor spacing, line length, and the dielectric properties of the surrounding medium.
- Significance: Understanding the surge impedance value helps in designing protection systems for overhead lines to mitigate the effects of transient events and ensure the reliability of the power transmission network.
In conclusion, the surge impedance value of overhead lines plays a vital role in ensuring the proper functioning and protection of the power transmission system, with a typical range of 400 to 600 ohms for overhead lines.
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The surge impedance value of overhead lines isa)50 to 100 ohmsb)400 to...
The equation for surge impedance is given by
Where L = inductance in henry
C = capacitance in farad
An impedance which renders the line as the infinite line is known as surge impedance. It has a value of about 400 ohms and phase angle varying from 0 to -15 degrees for overhead lines and around 40 ohms for underground cables.
For overhead line surge impedance is given by 400-600 Ω
For underground cable surge impedance is given by 40-60 Ω
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