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Where does 690VAC fit into NFPA 70E Table 130.7(C)(150)(a) Arc Flash PPE Categories?

Question asked by shrkach on Feb 18, 2019
Latest reply on Feb 22, 2019 by Steve Benton

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.