timm333
Senior Member
- Location
- Minneapolis, MN
- Occupation
- Electrical Design Engineer
In arc-flash calculations, the Fault-Clearing-Time of protectivedevices is found from TCC at a particular bolted-fault-current (Ibf). In case of fuse, wetake the total clearing time instead of the minimum melt time, this makessense.
Does Arcing-Fault-Current (Ia) also play a role in the calculationof Fault-Clearing-Time from TCC, or only bolted-fault-current is used tocalculate the Fault-Clearing-Time from TCC? Thanks
Does Arcing-Fault-Current (Ia) also play a role in the calculationof Fault-Clearing-Time from TCC, or only bolted-fault-current is used tocalculate the Fault-Clearing-Time from TCC? Thanks