Author Archives: PQBlog

What is Short Circuit Analysis, and Why is it Done?

Published by Carelabs (Carelabz), Website: carelabz.com A Short circuit analysis is used to determine the magnitude of short circuit current, the system is capable of producing, and compares that magnitude with the interrupting rating of the overcurrent protective devices (OCPD). Since the interrupting ratings are based by the standards, the methods used in conducting a short circuitContinue reading “What is Short Circuit Analysis, and Why is it Done?”

Rules, Indices and Approach for Assessment and Improvement of Power Quality

Published by Antonio Ardito, Stefano Malgarotti, Angelo Schiappacasse,1 1 This paper was developed within the activity Ricerca di Sistema DM 26/01/2000. Authors are with CESI spa, via Rubattino 54, 20134 Milano (MI), Italy, (e-mail: malgarotti@cesi.it, tel. +39-02 2125-5517) ABSTRACT Power Quality is of concern in both open market and in vertically integrated environment, since theContinue reading “Rules, Indices and Approach for Assessment and Improvement of Power Quality”

What You Need To Know About Arc Flash Hazard Study And Analysis

Published by Carelabs (Carelabz) Arc flash study came into picture ten years ago when IEEE 1584, known as “IEEE Guide for Performing Arc Flash Hazard Calculations,” was first introduced. This landmark document defines equations and methods that have become key components of the arc flash study. In order to identify the specific arc flash hazardContinue reading “What You Need To Know About Arc Flash Hazard Study And Analysis”

Strategies for Investigating Flicker

Published by Wayne LaFleur, Senior Engineer, Power Monitors, Inc. Email: wlafleur@powermonitors.com, Website: powermonitors.com, (800) 296-4120, February 2014. White Paper. ABSTRACT Investigating f licker issues with PMI recorders can be straightforward if the right data is collected, and analyzed with ProVision. By enabling and examining Pst and IFL flicker data, in addition to RMS voltage andContinue reading “Strategies for Investigating Flicker”

What You Need To Know About Arc Flash

Published by Carelabs (Carelabz) Arc Flash is an energy release that takes place when electricity flows through the air and two live conductors causing short circuit. In a residential setting, arc flashes usually produce little more than a brief flash of light before extinguishing themselves harmlessly. In commercial or industrial setting, voltages are high, soContinue reading “What You Need To Know About Arc Flash”

Energy Platform EP1 Trend Data Time Interval

Published by Terry Chandler, Director of Engineering, Power Quality (Thailand) Co., Ltd. Emails: terryc@powerquality.co.th,TChandler@Dranetz.com The EP1 is Energy Platform has a slightly different time interval for the trended data from the other Dranetz portable products. The PX/PG/PV have a minimum intervals of 1 second, 10 seconds and 1 minute. Note: There are some limitations onContinue reading “Energy Platform EP1 Trend Data Time Interval”

Dranetz HDPQ Generator & Mission Critical Applications

Load stepping, power source switching and other tests required during the commissioning and troubleshooting of mission critical facilities presents unique challenges to the average PQ analyzer, but Dranetz doesn’t make average PQ analyzers. Most PQ analyzers can’t reliably capture the step load changes, don’t have a large enough recording buffer, can’t capture the effects onContinue reading “Dranetz HDPQ Generator & Mission Critical Applications”

Passive Harmonic Filter Design

Published by Kerim Ozer, Senior Electrical Engineer, Enspec Power Ltd. Email: kerim.ozer@enspecpower.com A technical review of how passive harmonic filter types have an impact on network impedance profiles in terms of damping. A review of a harmonic filter design study was carried out for an industrial Plant, which included a total capacity of >100MW smelters,Continue reading “Passive Harmonic Filter Design”