Numerical Part 2 - Measurement of High Voltage and High Current - High Voltage Engineering

TL;DR

Solving numerical problems involving high voltage measurements using electrostatic voltmeters and Rogowski coils.

Transcript

hello friends welcome back to the discussion on numericals on measurement of high voltage high current in last lecture we discussed four numericals now we'll be discussing our next set of numericals so i just number this numerical as numerical number five the statement goes like this an absolute electrostatic voltmeter it means the type of method o... Read More

Key Insights

• ❓ Calculating areas and potential differences in electrostatic voltmeters involves understanding basic formulas.
• ❓ Capacitance and resistance calculations are essential in determining circuit properties.
• 🙊 Rogowski coils play a vital role in measuring peak currents accurately.

Questions & Answers

Q: How is the area of the plate in an electrostatic voltmeter calculated?

The area is calculated using the formula pi/4 * d^2, where d is the diameter of the circular plate.

Q: What is the formula for calculating the force of attraction in an electrostatic voltmeter?

The force is calculated using f = 1/2ε * v^2 / d^2 * area, where ε is the permittivity of the medium.

Q: How is capacitance calculated in a voltmeter circuit?

The capacitance is calculated using the formula 1/(c*r) = ω / (10 * π), where ω is the angular speed of the circuit.

Q: What is the purpose of using a Rogowski coil for peak current measurements?

Rogowski coils are used to measure peak currents by sensing the rate of change of current over time.

Summary & Key Takeaways

• Analyzing high voltage measurement problems using electrostatic voltmeters and Rogowski coils.

• Calculating areas, potential differences, resistances, capacitances, and mutual inductances.

• Understanding the concepts behind integrating circuits, capacitances, and peak current measurements.