In Oakland, CA, an office building reduced energy use (and occupant complaints) with a retrofit to its pneumatic equipment. From the June 2013 issue.
Cooper Crouse-Hinds’ ACE Series Explosionproof Variable Frequency Drives (VFD) are a NEMA 7 VFD solution that can be installed in Class I, Division 1 or 2 hazardous areas. VFDs are already widely used to optimize the speed of motors controlling process equipment, but until now they have not been used inside classified enclosures because heat generated by the VFD inside the enclosure causes it to fail. Instead,