White Papers and Technical Articles
4/2014 Streamlining Automation: Associated Power Technologies' Graphic User Interface
Incorporating an automated AC power source into a production line or laboratory can be challenging for any user. How can the power source be integrated into the existing infrastructure? How can the user remotely communicate with the source? How can the user pull data from the power source to analyze trends? Associated Power Technologies has answered these questions by releasing a free graphic user interface (GUI).
pdf file 876 KB
9/2013 Get More Out of an AC Power Source: Using Over Current Foldback Technology to Deal with High Incrush Current
One of the biggest challenges when choosing a power source is determining how much power you need for the application. While steady state current values are commonly specified by the manufacturer, variable inrush or currents from inductive loads are more difficult to quantify. Inrush current values need to be considered because even if the source can handle the steady state current, the inrush current could cause the source to go into an over current or over power protection mode. OC Foldback or “Over Current Foldback” is an APT feature that keeps output current constant. The power source does this by reducing, or “folding back”, the voltage in a linear fashion while maintaining a constant current. The voltage maintains a constant value until it folds back to maintain a constant current. Once the inrush current stabilizes, the voltage will increase back to the nominal set value.
pdf file 107 KB
6/2013 The 400XAC Series: Two Major Advantages that Simplify Functional Testing
One of the most difficult aspects of product testing is finding a power source that can cover a multitude of functional testing capabilities. Often times, test engineers and production managers end up having to purchase multiple power sources to cover all of their testing needs. This presents a couple problems. First, different pieces of equipment may not be compatible with one another forcing the end user to alter their lab or production line setup in order to compensate for this lack of flexibility. Second, if the power sources need to be placed in an automated station, the user is forced to program multiple sources to setup sequences and gather test data. This can be a long and tedious process, especially if a company does not have programming engineers in house. Associated Power Technologies 400XAC series 3Ø power sources were designed to address these problems. This paper will outline the various output modes of the 400XAC series as well as its automation capabilities.
pdf file 258 KB
9/2011 Using AC Sources for Compliance Testing
Due to international safety agency standards, electrical safety tests are an essential part of the design and manufacturing process if a company wishes to sell products into the EU or affix a safety agency mark to their products for sale domestically. Dielectric withstand (hipot) testers are perhaps the most commonly used instruments, as international safety agency specifications usually call for a hipot test to be performed as a 100% production line test. This whitepaper discusses the advantage of using an AC Power Source for your compliance testing.
pdf file 161 KB
6/2011 To Float or Not to Float? Analysis of a floating vs. grounded output
Grounding electrical circuits is necessary for safety in the event that a fault occurs within the system. However, grounded systems can present their own set of problems. Small differences in potential within a grounding system can cause ground loops and these loops can have adverse effects ranging from data loss to presenting a severe safety hazard. This paper discusses the benefits of using a power source that gives the operator the flexibility of choosing either a grounded or floating output reference.
pdf file 111 KB
4/2011 Total Harmonic Distortion and Effects in Electrical Power Systems
Power sources act as non-linear loads, drawing a distorted waveform that contains harmonics. These harmonics can cause problems ranging from telephone transmission interference to degradation of conductors and insulating material in motors and transformers. Therefore it is important to gauge the total effect of these harmonics. The summation of all harmonics in a system is known as total harmonic distortion (THD).
pdf file 62 KB
2/2011 Why Making the Move from a Variable Transformer to a VariPLUS is the Right Decision
No matter what the industry, advances in technology continue to improve the way that companies do business. Manufacturers of electrical products should expect no different.
pdf file 161 KB
9/2010 Exploring the Benefits of Advanced AC Power Source Technology
Versatile test equipment proves to be one of the most valuable investments that electrical product manufacturers can make. This whitepaper discusses incorporating Modular AC Power Sources into a company's current mix of test & measurement equipment.
pdf file 83 KB
5/2010 Understanding the Difference between Resolution and Accuracy Description
This whitepaper discusses the difference between Resolution and Accuracy as it pertains to electronic equipment and ac power sources.
pdf file 25 KB
5/2010 True vs. Apparent Power
This whitepaper defines the difference between True Power and Apparent Power and explains the various aspects of power.
pdf file 194 KB
4/2010 Power Factor vs. Crest Factor
Two critical quantities to specify when dealing with AC power sources are the power factor (PF) and the crest factor (CF). This paper will define each metric and explain how they relate to electrical systems.
pdf file 183 KB
3/2010 Power Factor Correction
This whitepaper discusses power factor correction (PFC), which is a commonly employed method to reduce harmonic distortion and increase efficiency in an AC power source.
pdf file 106 KB