Current levels. All switching equipment (switches and disconnectors) will have the following characteristics: 500 kV 220 kV Minimum rated current 2 000 A 2500 A Three-phase short-circuit breaking capacity, 1s 40 kA 40 kA Three-phase short-circuit breakage capacity 104 kA peak 104 kA peak Reactor connection switches shall comply with the IEEE Standard Std.C37.015 relating to the requirements for closing and opening currents.
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