This historical analysis traces switchgear materials from early air insulation (at 3 kV/mm) to oil systems and modern vacuum interrupters with higher dielectric strengths. Marius Grisaru documents porcelain/Bakelite degradation and epoxy’s humidity resistance. Essential for understanding how insulation choices impact reliability in today’s 500 kV+ grids per IEC/CIGRE standards.
Historical and contemporary insulating materials in switchgear: Evolution, properties, and future directions
This historical analysis traces switchgear materials from early air insulation to modern vacuum interrupters with higher dielectric strengths.
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