['Electrical Safety', 'Specialized Industries']
['Electrical Safety', 'Electric Power Utilities']
10/11/2024
Copyright 2024 J. J. Keller & Associate, Inc. For re-use options please contact copyright@jjkeller.com or call 800-558-5011.
...
No later than April 1, 2015, for voltages over 72.5 kilovolts, the employer must determine the maximum anticipated per-unit transient overvoltage, phase-to-ground, through an engineering analysis. Alternatively, the employer may assume a maximum anticipated per-unit transient overvoltage, phase-to-ground, in accordance with the following table:
| Voltage Range(kV) | Type of Current (ac or dc) | Assumed Maximum Per-Unit Transient Overvoltage |
|---|---|---|
| 72.6 to 420 | ac | 3.5 |
| 420.1 to 550.0 | ac | 3.0 |
| 550.1 to 800.0 | ac | 2.5 |
| 250 to 750 | dc | 1.8 |
['Electrical Safety', 'Specialized Industries']
['Electrical Safety', 'Electric Power Utilities']
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Copyright 2024 J. J. Keller & Associate, Inc. For re-use options please contact copyright@jjkeller.com or call 800-558-5011.