ganutenator
Lifetime Supporting Member
Customer has built a panel w/ two vfds. All that is in the box is the two vfds.
Each VFD is fed from a Breaker outside of the box.
Assuming the wire and breaker size is correct feeding the line side of the VFD do I need any additional protection inside the box?
I copied this from the UL website...
"Protect VFDs in accordance with Markings
Variable frequency drives may or may not be provided with a motor overload function and branch circuit protection."
What question should I ask the Drives group at Schneider Automation?
Each VFD is fed from a Breaker outside of the box.
Assuming the wire and breaker size is correct feeding the line side of the VFD do I need any additional protection inside the box?
I copied this from the UL website...
"Protect VFDs in accordance with Markings
Variable frequency drives may or may not be provided with a motor overload function and branch circuit protection."
What question should I ask the Drives group at Schneider Automation?