We have an air compressor that is presently in a NEMA 12 enclosure. We need to move it to the outside pad and it will therefore require the enclosure to be NEMA 3R or 4. Anyone have any experience with enclosure retrofit kit options or other suggestions. Trying to avoid a wholesale...
I have an enclosure (72Hx68Wx18D in.) containing 2x40 HP VFD's fed with 480VAC/200A. Given the increasing (and real) concerns regarding Arc Flash hazards and associated NFPA70E requirements, we are confronted with major hurdles in order to service this enclosure. From time to time, we do need...
I am installing an HMI in the door of a NEMA 4 enclosure. The panel will be located outdoors. Most of the NEMA 4 rated HMI's that I've come across are rated for indoor use only. I assume that sunlight glare and UV damage are the main reasons for limiting them to indoor.
Anyone have any...
I'm putting together a system with two 40 hp pump motors. One pump will function as the primary, and the secondary pump will be used as a standby in the event that the primary fails. Both pumps will never operate at the same time.
I would like to use a single VFD for both pumps and install a...
