What is the Limited Approach Boundary for a 35kV switchgear?

The Limited Approach Boundary is defined as a distance that personnel must maintain from exposed live parts to reduce the risk of electrical shock and to ensure safety in environments where energized equipment is present. For a 35kV switchgear, which operates at a relatively high voltage level, the established Limited Approach Boundary is typically set at 6 feet. This was determined based on the need for a buffer zone that provides adequate protection for unqualified personnel who may be in the vicinity of the potentially hazardous equipment.

Maintaining a distance of 6 feet helps to minimize the risk of electrical arcs and direct contact with live parts, thus ensuring a safer working environment. The criteria for determining these boundaries generally take into account the voltage level and its associated hazards, which is why the proximity required for 35kV is specifically defined this way in industry standards.