Do magnetic fields have any effect on dielectric breakdown

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SUMMARY

Magnetic fields have no significant effect on the dielectric breakdown of insulators, such as air, which has a breakdown threshold of 3 Mega volts per meter at a one-meter gap. While it is theoretically possible to generate electric fields from varying magnetic fields, the strength required to influence dielectric breakdown is impractical. Magnetic breakers utilize magnetic fields to redirect electric discharges, effectively increasing the arc path and facilitating the breakdown process.

PREREQUISITES
  • Understanding of dielectric breakdown principles
  • Knowledge of electric and magnetic field interactions
  • Familiarity with the concept of electric arc and its characteristics
  • Basic principles of magnetic breakers and their applications
NEXT STEPS
  • Research the principles of dielectric breakdown in various materials
  • Study the operation and design of magnetic breakers
  • Explore the relationship between electric fields and magnetic fields in electromagnetic theory
  • Investigate advanced applications of magnetic fields in electrical engineering
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Electrical engineers, physicists, and professionals involved in high-voltage systems or arc management will benefit from this discussion.

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Would a magnetic field have any effect on the dielectric breakdown of insulators? For example, the dielectric breakdown of air is 3 Mega volts per meter at a gap of one meter; if you applied a magnetic field to that breakdown, would it help guide the electrons along the path and therefore reduce the amount of power needed to cause the dielectric breakdown or would it have no effect? Or just require too much power to generate a magnetic field strong enough to make a difference?
 
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No, no significant effect for any practicable system. You can generate electric fields from varying magnetic field but not strong enough to cause electric breakdown for this system.

However magnetic breakers use magnetic fields to curve the path of an electric discharge in air, making the path longer and breaking the arc.
 

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