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Test AC Sources with an AC Electronic Load

Posted by Grady Keeton on Jun 18, 2019 4:10:44 PM

Testing AC power sources, such as uninterruptible power supplies, can be a real challenge. These products are often tested with resistive load banks, but this approach does not simulate real-world conditions such as switching DC/AC converters found in many AC powered products.  

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Topics: Compliance Testing, voltage variation

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, voltage dip, voltage interruption, voltage variation, IEC-61000, IEC-61000-4, IEC 61000-4-11

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