Richard P. Bingham

Power Quality Columnist

Richard P. Bingham, a contributing editor for power quality. He can be reached at 732.287.3680.

Articles by Richard P. Bingham

October 2006
A power play with hotel elevators In hospitality and gaming facilities, elevators are a vital system—a system that relies on power quality. Generally, the height of these facilities makes the use of stairs an alternative for only a few patrons. One of the keys to operation of elevators is the electric motor and the quality of supply that feeds them. READ MORE
September 2006
Looking into the origin of disturbances In last month’s issue, we reviewed three types of power quality disturbances that could result in blinking lights. Though the events were categorized as three different types of severity (sag, rapid-voltage change and flicker), they were all capable of causing a visual change in the output of a light source. READ MORE
August 2006
Many of the 5th generation power quality monitors can continuously calculate several thousand parameters (more than most users know what to do with or really need). Another parameter has been added—rapid-voltage change—that also can describe what happens when the lights blink. It actually isn’t a new one, but rather one that has just been defined. READ MORE
June 2006
Odd, even, negative sequence and triplen are all interesting adjectives associated with harmonics. Usually, even harmonics are a rarity. However, in the past couple of years, even harmonics have increasingly appeared in data sent to me by customers. This doesn’t necessarily mean that there is an increase in even harmonics in today’s electrical environment; it’s just that I see it more often. READ MORE
May 2006
Recently, a PQ consulting expert sent me some interesting data from a facility he monitored. The data was the result of periodic PQ monitoring that is conducted at the facility’s service entrance. There wasn’t a report of problems in the facility, though the resulting data shows several potential problems that may cross that “threshold of pain” in the future. READ MORE
April 2006
When setting out to monitor any power system, it is very important to determine what type of wiring configuration is used before making the connections. The primary and secondary sides of transformers are often different wiring configurations, as can be the loads from the source. This affects not only how you would connect the voltage and current probes, but also what you will see in the data. READ MORE
February 2006
Frequently, power quality (PQ) phenomena that result in changes to the voltage waveforms aren’t noticeable without specialized instruments. For example, a power factor capacitor switching transient isn’t likely to make the lights dim or flicker, yet it may cause the adjustable speed drive (ASD) to trip off line. READ MORE
January 2006
Reading through some electrical engineering textbooks written in the 1930s, the term “frequency” is used to describe what is now referred to as the “fundamental electric power frequency,” also known as 60 Hertz (Hz) in North America and some other parts of the world. In the 1930s, there was only one frequency on the electrical wires, so it didn’t need extra adjectives to define it. READ MORE
December 2005
At a recent National Electrical Code taskforce meeting dealing with mission-critical facilities relative to scenarios proposed by the Department of Homeland Security, the main concern seemed to be “you can’t test critical facilities. READ MORE