Common use of Voltage Levels and Insulation Clause in Contracts

Voltage Levels and Insulation. c1. 138 kV Voltage Levels Rated operating voltage 138 kV Maximum operating voltage 145 kV Lighting impulse withstanding voltage 650 kVpeak Industrial frequency withstanding voltage, 60 Hz 275 kV c2. 22.9 kV Voltage Levels Rated operating voltage 22.9 kV Maximum operating voltage 24 kV Lighting impulse withstanding voltage 125 kVpeak Industrial frequency withstanding voltage, 60 Hz 50 kV

Voltage Levels and Insulation. c1. 138 220 kV Voltage Levels Rated operating voltage 138 220 kV Maximum operating voltage 145 245 kV Lighting impulse withstanding voltage 650 1050 kVpeak Industrial frequency withstanding voltage, 60 Hz 275 460 kV c2. 22.9 60 kV Voltage Levels Rated operating voltage 22.9 60 kV Maximum operating voltage 24 72.5 kV Lighting impulse withstanding voltage 125 325 kVpeak Industrial frequency withstanding voltage, 60 Hz 50 140 kV