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Nema 7/Explosion Proof VFD

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

RE: Nema 7/Explosion Proof VFD

An EXP VFD is non-sense.

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

Gotta vote with Keith.

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

(OP)
Thanks,
I had the same feeling.  I let my customer know they could use a VFd mount it in a safe location.

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