Wind turbine generators can use voltages as high as 400/690 VAC to power yaw control, ventilation, and oil pump motors. Table 130.7(C)(150)(a) Arc Flash PPE Categories lists panel boards greater than 240 V up to 600V and 600 V class MCCs for arc flash PPE categories. From there it jumps to 1 kV and 2.3 kV categories. Would the PPE category for 690 V systems be the same as 600 V panel boards or MCCs? Has there been a change requested for the upcoming NFPA 70E to incorporate these higher voltages?
Am I looking at this wrong? I'd appreciate any guidance.