MIL-HDBKs, MIL-STD-704 Guide Avionics Power Testing

Posted by AMETEK Customer Service on May 24, 2018 2:03:04 PM

By Jon Semancik, Director of Marketing, AMETEK/VTI Instruments 

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Topics: AC Power Sources, Compliance Testing

Total cost of ownership is more than just price

Posted by Grady Keeton on Jan 4, 2018 10:01:29 AM

When you purchase a power supply, you need to take into account more than just the price of the supply. The price is just one of the factors in the total cost of ownership. Other factors include:

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Topics: AC Power Sources, Compliance Testing, DC Power-Supplies, Electronic Loads, Programmable Power, Programmable Power Solutions, Solar Testing, Uninterruptible Power Supplies

Introduction to IEC 61000-4-11, Part II - AC source requirements

Posted by Grady Keeton on Aug 2, 2016 10:04:39 AM

In Part I, we introduced you to the concept of testing equipment for immunity to voltage dips and short power interruptions in accordance with IEC 61000-4-111. In addition to specifying the test waveforms, the standard also specifies AC source requirements for full compliance testing.

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Topics: AC Power Sources, Compliance Testing

Introduction to IEC-61000-4, Part I

Posted by Grady Keeton on Jul 25, 2016 4:14:32 PM

Mains voltage dips and short interruptions can be caused by a wide variety of phenomena and can cause equipment to operate unreliability, and in some cases, can damage the equipment. Faulty loads on an adjacent branch circuit, for example, can cause a circuit breaker to trip, and high-power loads such as welders, motors and electric heaters can cause voltage variations. Natural events, such as power lines downed by storms or lightning strikes, may also disrupt mains power.

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Topics: AC Power Sources, Compliance Testing, IEC-61000, IEC-61000-4, IEC 61000-4-11, voltage dip, voltage interruption, voltage variation

EN61000-3-2 Sets the Standard for Harmonic Currents

Posted by Grady Keeton on Aug 4, 2015 2:22:36 PM

While switch-mode power supplies have many advantages, one of their disadvantages is that they are a non-linear load, and because of that can inject harmonic currents into the electrical distribution system. Devices with switching supplies include domestic appliances (TVs, microwave ovens, lighting equipment and dimmers), and office equipment (PCs, printers). Motor-driven equipment can also cause harmonic distortion.

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Topics: AC Power Sources, Compliance Testing

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