What Is strength Quality and Why Do I Need a strength Quality Analyzer?

What Is strength Quality and Why Do I Need a strength Quality Analyzer?




The reliability and cost of any electrical system depends greatly on the quality of the strength supplied to and consumed by the system. Poor strength quality may consequence in improper function, overheating, accelerated use and tear, falsely tripped circuit breakers and, in some situations, hazardous conditions. With the introduction of new electronic technologies over the last several decades, the world has placed new and more complicate demands for clean and reliable strength.

Measuring strength Quality typically involves calculating indicators of strength need, strength consumption and strength cleanliness. By measuring need and consumption, consumers can clarify cost centers in their electrical infrastructures in addition as engineer the electrical infrastructure required to meet those demands. By measuring cleanliness, consumers are able to avoid improper function, overheating and a plethora of other consequences of unclean strength.

What is strength need and how do we measure it?

strength need is the amount of average electrical energy that is consumed over some period of time by a device, machine building, etc… strength Quality Analyzers, electronic instruments used to measure indicators of strength quality, can average the electrical energy and characterize it in units of “kilowatts”. It is important that electrical systems are supplied with enough strength to meet peak periods of need.

How does strength consumption differ from strength need?

strength consumption, similar to need, is the “sum” of electrical usage over time. strength need reflects an instantaneous view of electrical usage, while, strength consumption sums the electrical usage over the same period of time. strength Quality Analyzers measure consumption in units of watthours (Wh) or kilowatthours (kWh). Most calculations of the cost of strength are based on consumption and measured by $ per kWh.

Once we know strength consumption, we can calculate a useful metric called “strength Factor”. strength Factor is a ratio of the actual strength used by an electrical system to the apparent strength delivered by the utility. In almost all situations, the actual strength used will be less than the apparent strength delivered because of heat dissipation, frictional loss, work performed and other release of energy by the electrical system.

We can use strength Factor to help us put a price tag on the amount of work the electrical system is performing, in addition as help us install capacitors and other devices that store real energy to avoid being charged for excess apparent strength. With a strength Quality Analyzer, you can calculate the “Reactive Compensation”, the amount of capacitive value required to correct a low strength Factor.

strength cleanliness and the need to understand harmonics

strength cleanliness refers to the identifying and freeing strength of “harmonics”. The concept of harmonics is a bit more difficult to understand than need and consumption. Harmonics are a consequence of non-linear loads that cause irregular spikes and dips in voltage and current on an electrical system.

The strength provided by utility companies is delivered in the form of a continued voltage AC (Alternating Current) and takes the shape of a sine wave. Ohms law says the amount of current used by an electrical device depends on the load (inductance) of that device. If the load varies over time, so will the current. Harmonics appear when varying loads (non-linear) create short pulses of current that deform the supplied, sinusoidal current waveform, creating an haphazard waveform.

You can think of an haphazard wave as being made up of several basic waveforms. The easiest illustration of an haphazard wave is to picture two people on opposite sides of a pool who each create a wave towards each other with a pool float. When the groups intersect in the middle, the consequence is a wave that is twice as tall. The resulting wave is made up of two basic groups.

This illustration can be used to explain that happens when harmonics occur due to non-linear loads. The current wave becomes deformed from a perfect sine wave and peaks and valleys create un-clean strength. Harmonics can cause devices to overheat, electrical wire ratings to be reduced, motors to prematurely use and circuit breakers to falsely trip.

strength Quality Analyzers have the ability to clarify and analyze the basic harmonics that make up an haphazard current wave. Measurements such as THD (Total Harmonic Distortion) can tell you the contribution of harmonic currents to the basic current required. Measured as a percentage, 10% would be a reason for concern. Another measurement called “Crest Factor” will indicate the level of peaking caused by harmonics. The Crest Factor is a ratio of the Peak Value / RMS Value, which in a perfect sine wave would be 1.414.

Choosing a strength Quality Analyzer

There are a number of different strength Quality Analyzer manufacturers such as Fluke, AEMC, Hioki and Extech. Some analyzers are designed to measure single phase systems while others are for three phase systems. Many PQAs integrate with PCs, have enhanced data logging capabilities and can produce specialized reports typically requested for strength quality applications. strength Quality Analyzers range in price from $1500 to $6500 with the more expensive products offering greater examination functionality.

in any case your application or budget, it is important that strength quality is a factor in the design and maintenance of your electrical system. strength quality is a force to be reckoned with whether you are trying to reduce costs, avoid downtime, and increase the service life of your system.




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