1. What is Dielectric Strength?

Dielectric strength is the maximum electric field that a material can withstand without breaking down and losing its insulating properties. It is measured in volts per meter (V/m) and indicates the electrical insulation capability of a material.

2. How Does the Calculator Work?

The calculator uses the dielectric strength formula:

Where:

• \( E \) — Dielectric strength (V/m)
• \( V \) — Applied voltage (V)
• \( d \) — Distance between electrodes (m)

Explanation: The formula calculates the electric field strength by dividing the applied voltage by the distance between the electrodes.

3. Importance of Dielectric Strength Calculation

Details: Calculating dielectric strength is crucial for designing electrical insulation systems, selecting appropriate insulating materials, and ensuring the safety and reliability of electrical equipment.

4. Using the Calculator

Tips: Enter voltage in volts (V) and distance in meters (m). Both values must be positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What units are used for dielectric strength?
A: Dielectric strength is typically measured in volts per meter (V/m) or kilovolts per millimeter (kV/mm).

Q2: What factors affect dielectric strength?
A: Material composition, temperature, humidity, thickness, and the presence of impurities can all affect dielectric strength.

Q3: Why is dielectric strength important in electrical engineering?
A: It helps determine the maximum voltage that insulation can handle before breakdown, ensuring electrical safety and equipment reliability.

Q4: Can dielectric strength be improved?
A: Yes, by using higher quality materials, reducing impurities, controlling environmental conditions, and proper design of insulation systems.

Q5: What are typical dielectric strength values for common materials?
A: Air: ~3 kV/mm, Glass: ~13-15 kV/mm, Transformer oil: ~10-15 kV/mm, Porcelain: ~10-12 kV/mm.