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A 500kV500-\mathrm{kV} Three-Phase Transmission Line Has A 2.2kA2.2-\mathrm{kA} Continuous Current Rating and A

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A 500kV500-\mathrm{kV} three-phase transmission line has a 2.2kA2.2-\mathrm{kA} continuous current rating and a 2.5kA2.5-\mathrm{kA} maximum short-time overload rating, with a 525kV525-\mathrm{kV} maximum operating voltage. Maximum symmetrical fault current on the line is 30kA30 \mathrm{kA} . Select a circuit breaker for this line from Table 7.10.in the text

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