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The panels are made up of
Slat
Steel
Bakelite
Any of above
Any of above
Electrical distribution or control panels are designed to house switchgear, control devices, and protective equipment. The choice of material for the panel faceplate depends on mechanical strength, insulation properties, fire resistance, and atmospheric conditions.
Electrical distribution or control panels are designed to house switchgear, control devices, and protective equipment. The choice of material for the panel faceplate depends on mechanical strength, insulation properties, fire resistance, and atmospheric conditions.
VdтАЛ=EтЛЕd тАФ where VdтАЛ is the dielectric strength requirement for insulating panels, E is the electric field stress, and d is thickness.
The panel serves as an insulating barrier or structural mount for electrical components. Materials like steel provide ruggedness, Bakelite provides superior electrical insulation (dielectric strength), and slate provides heat resistance and non-conductivity.
Electrical panels are categorized by their mounting material based on environmental needs.
Bakelite is a phenolic resin known for excellent electrical insulation.
Steel is used for industrial enclosures requiring high mechanical protection (IP ratings).
Slate is historically used for switchboards due to its natural flame retardancy.
Flexibility in selecting materials based on cost and application requirements.
Customizable for various voltage levels and indoor/outdoor environmental conditions.
Certain materials like slate are heavy and prone to cracking.
Steel enclosures require grounding and are conductive, necessitating careful insulation design.
Industrial distribution boards.
Control panels in substations.
Consumer units in residential wiring.
Slat/Slate panels were commonly used in older power distribution boards due to their non-conducting nature and ease of drilling.
Steel is now the industry standard for modern distribution boards for better structural integrity.
D is correct тАФ Electrical panels can be manufactured from various materials like slate, steel, or Bakelite depending on the specific insulation and strength requirements of the installation.
In competitive exams, when options provide multiple suitable materials for an enclosure/panel and 'Any of above' is present, always verify if the materials satisfy fundamental safety requirements like dielectric strength and fire resistance.