How are switchgear classifications determined?

Switchgear classifications are primarily determined based on voltage levels. This classification is crucial because different voltage levels require different components and design features to ensure safety, reliability, and proper functionality.

High-voltage switchgear is designed to handle equipment that operates at higher voltage levels, typically above 1 kV, while medium-voltage switchgear often covers ranges between 1 kV and 35 kV. Low-voltage switchgear generally refers to systems operating below 1 kV. This classification by voltage is essential as it directly influences the materials used, insulation requirements, and the design of protective mechanisms to safeguard users and connected equipment from electrical faults.

Other aspects, such as cooling mechanisms, physical size, or circuit types, may influence specific design choices in switchgear but do not serve as the primary criteria for classifying switchgear itself. Understanding the classification based on voltage levels is fundamental for engineers and technicians working with electrical systems, ensuring they select appropriate switchgear for their specific applications.