Dielectric strength meaning

Dielectric strength is the maximum electric field a material can withstand without experiencing electrical breakdown.


Dielectric strength definitions

Word backwards cirtceleid htgnerts
Part of speech The part of speech of the word "dielectric" is an adjective, while the word "strength" is a noun.
Syllabic division die-lec-tric strength
Plural The plural of the word dielectric strength is dielectric strengths.
Total letters 18
Vogais (2) i,e
Consonants (9) d,l,c,t,r,s,n,g,h

Dielectric strength is a crucial property of insulating materials that determines their ability to withstand electric fields without undergoing electrical breakdown. It is defined as the maximum electric field that a material can withstand without experiencing permanent damage.

Understanding Dielectric Strength

When an electric field is applied to a dielectric material, the atoms and molecules within the material become polarized, aligning themselves with the field. This polarization results in the material becoming an insulator, preventing the flow of electrical current. However, if the electric field exceeds the dielectric strength of the material, it can cause the atoms and molecules to rearrange permanently, leading to breakdown and the material becoming conductive.

Measurement and Units

Dielectric strength is typically measured in units of volts per unit thickness, such as volts per mil or volts per meter. It is a critical parameter in designing electrical systems and choosing appropriate insulating materials to ensure the safe and reliable operation of equipment.

Importance in Electrical Applications

Dielectric strength is especially important in electrical insulation, where materials are used to separate conductive parts and prevent electrical leakage. High dielectric strength materials are essential in applications such as high voltage cables, capacitors, transformers, and insulating coatings to maintain the integrity of the electrical system.

Dielectric strength is influenced by factors such as material composition, temperature, humidity, and processing conditions. It is essential to consider these factors when selecting insulating materials for specific applications to ensure optimal performance and longevity.

Overall, dielectric strength plays a significant role in determining the reliability and safety of electrical systems. By understanding this property and selecting materials with appropriate dielectric strength ratings, engineers and designers can create robust systems that operate efficiently and effectively.


Dielectric strength Examples

  1. The dielectric strength of the material was tested to ensure it could withstand high voltage.
  2. A dielectric strength of 50 kV/mm was required for the insulation to be considered safe.
  3. The dielectric strength of the capacitor needed to be increased to improve its performance.
  4. Choosing a material with a high dielectric strength is crucial for electric vehicle battery safety.
  5. The dielectric strength of the rubber gloves protected the electrician from shocks while working on live wires.
  6. The dielectric strength of the transformer oil determined its ability to insulate and protect the equipment.
  7. Increasing the dielectric strength of the ceramic insulator improved the efficiency of the electrical transmission line.
  8. The dielectric strength of the composite material was measured to ensure it met safety standards.
  9. The dielectric strength of the plastic casing of the electronic devices prevented electrical leakage.
  10. Testing the dielectric strength of the cable insulation helped identify areas of weakness that needed reinforcement.


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  • Updated 24/04/2024 - 03:18:33