Nema 7/Explosion Proof VFD
Nema 7/Explosion Proof VFD
(OP)
I have a customer that has requested an expolsion proof motor on their metering pump. They also want an expolsion proof VFD to accept a 4-20mA signal. Does anyone know of a manfacturer of such a beast, or have any suggestions? I am almost thinking they should just buy a normal VFD and mount it in a safe location and run proper conduit and using fire stop instead.
Thanks
-Robs68charger
Thanks
-Robs68charger





RE: Nema 7/Explosion Proof VFD
Yes, either mount it in the safe area or mount it in the hazardous area in an interlocked purged cabinet.
Keith Cress
kcress - http://www.flaminsystems.com
RE: Nema 7/Explosion Proof VFD
Put the VFD somewhere safe. Rigid conduit and a couple of seals is much less expensive than trying to contain and cool a VFD.
Good on ya,
Goober Dave
RE: Nema 7/Explosion Proof VFD
I had the same feeling. I let my customer know they could use a VFd mount it in a safe location.