Technical Articles

Supplier:

Utility Systems Technologies, Inc.


Utility Systems Technologies, Inc. has published these technical articles:

(Power Generation and Storage)
From this Article:
Two issues involving electric power are escalating simultaneously: consuming and producing electric power in a more "green" fashion and the need for a better quality of power. Green power, as splashed... (View Full Article)
(Power Supply and Conditioning)
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Many power conditioners are incompatible or marginally compatible with a common load type: devices or systems that require a large inrush and/or high overloads. Loads that contain devices such as... (View Full Article)
(Power Supply and Conditioning)
From this Article:
An AVR is at the heart of devices often called power conditioners or power stabilizers. The typical power conditioner is an automatic voltage regulator combined with one or more other power-quality... (View Full Article)
(Power Supply and Conditioning)
From this Article:
The automatic voltage regulator or AVR, as the name implies, is a device intended to regulate voltage automatically: that is to take a varying voltage level and turn it into a constant voltage level.... (View Full Article)
(Power Supply and Conditioning)
From this Article:
Anyone receiving power from an electric utility will see the nominal incoming voltage level (e.g. 120V) change over the course of a day to a small or large degree. There are many factors contributing... (View Full Article)
(Power Supply and Conditioning)
From this Article:
It is expected and accepted (in the U.S.) that there will be a voltage drop of 3 to 5% from the point where the electric utility delivers power to the end user (usually at the meter) to the point... (View Full Article)
(Power Supply and Conditioning)
From this Article:
One must realize that utility voltage levels are very dynamic and will most assuredly change over time - for better or for worse; instantly or over a long period. The problem is often that there is no... (View Full Article)
(Power Supply and Conditioning)
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Every piece of electrical equipment will operate within a range of voltage levels, however not necessarily with optimal performance. When the voltage level falls outside of its operational range, a... (View Full Article)
(Power Supply and Conditioning)
From this Article:
Few homeowners can justify the cost of an automatic voltage regulator for whole-house application. Except for those living in remote or isolated areas, the voltage supplied by the local utility is... (View Full Article)
(Power Supply and Conditioning)
From this Article:
Voltage that is too high can cause premature failure of electrical and electronic components (e.g. circuit boards) due to overheating. The damage caused by overheating is cumulative and irreversible.... (View Full Article)
(Power Supply and Conditioning)
From this Article:
Automatic voltage regulators can be designed for single phase or three phase AC applications. It is common for utilities to use single phase automatic voltage regulators ganged together to provide... (View Full Article)
(Power Supply and Conditioning)
From this Article:
An AVR takes in a range of voltage levels and automatically outputs a voltage with a much narrower range of voltage levels. For example, a typical automatic voltage regulator for power quality... (View Full Article)
(Power Supply and Conditioning)
From this Article:
The CVT (ferro) uses the unique principle of ferroresonance: operation of a transformer in the region of magnetic saturation. When the iron core of a transformer is in saturation, relatively large... (View Full Article)
(Power Supply and Conditioning)
From this Article:
The ferroresonant transformer or constant voltage transformer has a very long history having been invented in 1938 by Joseph Sola and continuing to sell tens of thousands of units per year. The ferro... (View Full Article)
(Power Supply and Conditioning)
From this Article:
The ferro voltage regulator, by its unique design, provides good isolation of load equipment from line noise and surges. The output voltage regulation is also smooth so long as the manufacturer has... (View Full Article)
(Power Supply and Conditioning)
From this Article:
This type of voltage regulator has been in use for more than 50 years and has seen refinements throughout the years primarily with advances in control technology and servo drive systems. This type of... (View Full Article)
(Power Supply and Conditioning)
From this Article:
Another means of changing output voltage in a transformer is to alter the physical orientation of the primary and secondary relative to each other. In a transformer the primary windings produce a... (View Full Article)
(Power Supply and Conditioning)
From this Article:
Simply said, when a transformer has an equal number of winding turns on the primary (input) and secondary (output), the input and output voltage should be equal. By adding or subtracting the number of... (View Full Article)
(Power Supply and Conditioning)
From this Article:
Because mechanical voltage regulators must physically move components, their speed in correcting output voltage fluctuations is very slow. Mechanical AVRs measure correction time in volts per second... (View Full Article)
(Power Supply and Conditioning)
From this Article:
The primary differences between power quality and utility applications are the range of input voltage regulation and voltage levels, but there are other, less obvious, differences including the terms... (View Full Article)
(Power Supply and Conditioning)
From this Article:
The typical electronic tap switching voltage regulator works very much like the mechanical tap switching regulator - except that it replaces mechanical servo drives and brushes with solid-state... (View Full Article)
(Power Supply and Conditioning)
From this Article:
The double conversion electronic voltage regulator differs significantly in operation from the tap switching type EVR. The double conversion EVR uses a rectifier to convert AC power to DC and then... (View Full Article)
(Power Supply and Conditioning)
From this Article:
Electronic voltage regulators are typically designed for indoor, low voltage applications and are air-cooled (i.e. using dry-type transformers instead of oil-filled). Other characteristics of tap... (View Full Article)
(Power Supply and Conditioning)
From this Article:
The EVR is the modern standard for voltage regulation in most power quality applications. While an EVR will be about 25% higher in cost than a comparable mechanical voltage regulator, the difference... (View Full Article)
(Power Supply and Conditioning)
From this Article:
There are approximately 156,000 public drinking water systems in the United States. The U.S. Environmental Protection Agency (EPA) has issues new rules to improve public drinking water safety that... (View Full Article)
(Power Supply and Conditioning)
From this Article:
Energy efficiency strategies for schools typically assume that the electric power will be clean, stable and the voltages will be at the proper level. Few imagine that the incoming electric power... (View Full Article)
(Power Supply and Conditioning)
From this Article:
Comparison of indusrial-grade and computer-grade automatic voltage regulators (AVR) in industrial enviroments. Discussion of the limitations and application considerations of both types of AVR.... (View Full Article)
(Electrical Distribution and Protection)
From this Article:
Power quality -- or, simply, the usability of electric power -- is of vital concern to modern life. A natural question to ask is: Will power quality improve -- or worsen -- in the near future? A look... (View Full Article)
(Power Supply and Conditioning)
From this Article:
An overview of power quality basics: 1) Common power quality problems causes and symptoms 2) Typical solutions for power quality problems 3) Identifying types and causes of power quality problems 4)... (View Full Article)
(Electrical Distribution and Protection)
From this Article:
Overly high voltage levels can be detrimental to electrical devices, particularly electronics. However, voltages that are slightly above nominal may improve the efficiency of some devices like motors... (View Full Article)
(Electrical Distribution and Protection)
From this Article:
Chronic low voltage is a common problem that can affect any electric customer. The causes of this power quality problem are relatively easy to identify but potential energy saving measures could make... (View Full Article)
(Power Supply and Conditioning)
From this Article:
When it comes to voltage regulation for large industrial or commercial applications, confusion often surrounds two different types of automatic voltage regulators (AVR): the medium-voltage mechanical... (View Full Article)

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