Introduction Effective greenhouse management requires consistent monitoring of environmental extremes and equipment performance. This white paper examines the role of the PMI Tensor in verifying the adequacy of ventilation and…
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Case Studies
Power Quality in Traffic Signal Cabinets
The first electric traffic signals were installed over 100 years ago but now are a ubiquitous aspect of modern life. Today's intersections are far more complex, with a cabinet of…
Case Study: Spotting Pump Failure with a Boomerang and Canvass
In September of 2017 a homeowner discovered that his well was not delivering water. The suspicion was that the pump itself was in some way failing – perhaps the motor…
UPS Power Quality Case Study
In this white paper, power quality issues that can result from an Uninterruptible Power Supply (UPS) are discussed. Covered are the basic operational concepts of the more popular types of…
Case Study of Portable Generator Power Quality
In this paper, power quality data taken from several different generators is reviewed. Standby and portable generators can be very important for backing up essential systems when utility power isn’t…
Municipal Golf Course Suffers Catastrophic Damage From Overheated Neutral
In this modern world of power we see more and more desire to improve efficiency and reduce costs, which leads to decisions on what equipment to choose to meet these…
Case Study: Electric Tankless Water Heaters and Power Quality
In this case study, an investor-owned utility responded to a residential customer complaint. The root cause was a newly installed electric tankless water heater, requiring a transformer upgrade beyond the…
Electric Tankless Water Heaters and Power Quality
In this whitepaper the basics of electric tankless water heaters (TWHs) are presented, along with their potential impact on voltage quality. Real-world graphs are discussed to illustrate the significant impact…
The True Cost of Low Energy Lighting
During President George W Bush's administration a congressional bill was enacted in December of 2007 called the Federal Independence and Security Act (H.R 6), which called for a ban on…
Case Study: Ground Fault Detection
The main breaker tripped in a Motor Control Center. All circuits were meggered and checked out, but no cause was found for the trip. Because none of the load breakers…
Industrial Customer Experiencing Machine Shutdowns Due to Voltage Sags
This power quality case study describes an industrial customer who was experiencing machine shutdowns in his manufacturing facility. These shutdowns were resulting in losses very costly to this die manufacturer.…
