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Uninterruptible power systems

Recently Published Standard, IEC 62040-1:2017 EXV for Uninterruptible Power Systems (UPS)

The International Electrotechnical Commission (IEC) has released IEC 62040-1:2017 EXV 

Recent Standard Update: IEC 62040-1:2017, Uninterruptible Power Systems

The International Electrotechnical Commission (IEC) has released IEC 62040-1:2017

IEC Releases IEC 62040-5-3:2016 for Uninterruptible Power Systems

The International Electrotechnical Commission (IEC) has released IEC 62040-5-3:2016

Current Harmonics Testing: MIL-STD-1399 Section 300B versus MIL-STD-461F

The extensive use of power electronics on vessels and offshore installations, especially on electric propulsion ships, has had a substantial impact on the power quality of the power distribution system. This article discusses the effects of current harmonic distortion created by commercial uninterruptible power supplies (UPS) being deployed in Naval shipboard applications.

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