Frequent
component failures can be frustrating and hard to track down. If you are
suffering above average failure rates in electronic components, it could be a
symptom that your business has dirty power.
What Is Dirty Power?
When we
consider the electricity coming out of the wall, we tend to think of it as a
steady stream like water from a tap. In a perfect world that would be right,
but in reality the electrical signal varies and that can damage equipment.
The most
common example of poor power quality is a surge cause by a lightning strike.
This brief period of high voltage can literally fry equipment. However there
are many other power quality problems that can insidiously damage equipment
over time. Electrical signals can experience swells or sags as equipment is
turned on and off, such as the way the lights dim briefly when high-power
equipment is turned on. Noise in the signal can cause fluctuating voltages. Any
of these problems can wear out electronic components.
How Do I Know If I Have Dirty Power?
Plants use
panel meters to monitor the condition of the power entering their facilities.
These panel meters might be placed just on the main line coming into the
building or could be used to check power in individual pieces of equipment.
Panel
meters can detect transient voltage changes, ongoing fluctuations and other
problems. Technicians can examine readings to see if the electrical signal is
pure or not. If power quality problems are detected, they can nail down exactly
what kind of problems are being experienced. Once the panel meters have
detected the low quality power, decisions can be made about how to deal with
the situation and protect the expensive equipment that will be damaged by the
poor quality power.
How Can I Fix Dirty Power?
Your
electrical utility is obligated to deliver clean power. If a panel meter shows
the power coming onto the property is low quality, contact the electric company
so they can address the problem. However the utility's obligation ends at the
property line. In large industrial plants, large pieces of equipment create
quality problems in the plant-wide grid.
Power
conditioners regulate the electrical signal and prevent dangerous signals from
reaching the equipment and causing damage. A power conditioner acts as a surge
suppressor, preventing dangerous overvoltages from causing equipment failure,
but also cleans up the power signal and protects against undervoltages or other
problems.
The cost of
a power conditioner is fairly low, almost certainly far lower than the
equipment being protected. They provide ongoing protection, which will extend
the life of electrical components and in the event of disaster are designed to
"take the bullet," protecting attached equipment by burning out.
If you
suspect dirty power, the first step is to install panel meters throughout the
plant to verify power quality. Do it now before poor quality power can damage
more equipment.