If you're installing a variable-frequency drive (VFD) or uninterruptible power supply (UPS) — or if you already have this equipment in place — you should be monitoring certain power quality parameters ...
A VFD reports a low-volts fault when the drive's dc link voltage drops below 62% of the nominal level for the high setting (480 Vac) and 50% of nominal for the low setting (400 Vac). The +10% and -15% ...
Variable frequency drives (VFDs) offer many benefits to reduce energy costs and extend the life of mechanical equipment essential for consistent building comfort. VFDs allow HVAC system fan and pump ...
More and more often, variable frequency drives (VFDs) are used for control of fans and compressors in HVACR systems. The benefits are well documented and industry acceptance is such that most electric ...
Authorities are working on clearing a minor acid spill that happened after a Friday afternoon traffic incident, according to ...
A Valdosta house fire has left eight people displaced, according to the Valdosta Fire Department.VFD responded to the fire on ...
CEREDO — Ceredo Volunteer Fire Department members performed a symbolic push-in ceremony on the evening of Jan. 6, placing ...
Several Angelina County fire departments battled an hours-long commercial structure fire at a business off Highway 69 near ...
The Ripley Volunteer Fire Department says people who have allegedly been going door-to-door offering to install smoke ...
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