Installation and operational considerations of arc resistant switchgear

The application of indoor arc resistant metal clad switchgear for the purposes of personnel safety must consider more than the switchgear design and construction. The effect of the pressure and heat of the arc products (fire, gas, vapor, and molten material) on the cable, bus duct, and substation building must be considered. This paper discusses the design, installation and operation of one manufacturer's arc resistant metal clad medium voltage switchgear in a large petrochemical facility.