Published by Mirus International Inc., [2010-01-08] MIRUS-FAQ001-B2, FAQ’s Harmonic Mitigating Transformers, 31 Sun Pac Blvd., Brampton, Ontario, Canada. L6S 5P6. Harmonic Mitigating Transformers save energy by reducing losses in the following ways: 1. Zero phase sequence harmonic fluxes are canceled by the transformers secondary windings. This prevents triplen harmonic currents from being induced into theContinue reading “How do Harmonic Mitigating Transformers save energy?”
Category Archives: Power Quality
What is Portable Appliance Testing and Why is PAT Test Done
Published by Carelabs, Carelabs is authorized provider of Electrical Installation’s Study, Analysis, Inspection, and Certification services in UAE. Website: carelabz.com Portable appliance testing (commonly known as “PAT”, “PAT Inspection” or (redundantly) as “PAT Testing) is the term used to describe the examination of electrical appliances and equipment to ensure they are safe to use. The formal term for the processContinue reading “What is Portable Appliance Testing and Why is PAT Test Done”
Historical Perspective of Utility PQ Standards Year 2000 timeframe
Published by Terry Chandler, Director of Engineering, Power Quality Thailand Ltd. & Power Quality Inc., USA. Emails: terryc@powerquality.org, terryc@powerquality.co.th
How do Harmonic Mitigating Transformers reduce voltage distortion?
Published by Mirus International Inc., [2010-01-08] MIRUS-FAQ001-B2, FAQ’s Harmonic Mitigating Transformers, 31 Sun Pac Blvd., Brampton, Ontario, Canada. L6S 5P6. Delta-wye transformers, even those with a high K-factor rating, generally present high impedance to the flow of harmonic currents created by the non-linear loads. Question 8 showed that the non-linear loads are current sources thatContinue reading “How do Harmonic Mitigating Transformers reduce voltage distortion?”
What is Soil Resistivity Test and How is the Testing Done
Published by Carelabs, Carelabs is authorized provider of Electrical Installation’s Study, Analysis, Inspection, and Certification services in UAE, and offer voltage drop study and analysis services. Website: carelabz.com The resistance of an earth electrode is related to the resistivity of the soil in which it is placed and driven, and thus soil resistivity calculations and measurements isContinue reading “What is Soil Resistivity Test and How is the Testing Done”
Reactive Power Compensation in Distribution System – Changing Paradigm
Published By M.L.Sachdeva, Former Chief Engineer, CEA & N.S.Sodha, Former Executive Director, PowerGrid. Conference on ‘Reliable & Quality Power’ on 30-31st May 2019 CBIP Conference Hall, New Delhi. Synopsis Reactive power compensation technologies inhibited in the Distribution system as also Power system of the Present (Conventional) and Power System of Future (Up-front Conventional cum Renewable ResourcesContinue reading “Reactive Power Compensation in Distribution System – Changing Paradigm “
What are zero sequence harmonic filters and how do they reduce 3rd harmonic currents and prevent neutral conductor overheating?
Published by Mirus International Inc., [2010-01-08] MIRUS-FAQ001-B2, FAQ’s Harmonic Mitigating Transformers, 31 Sun Pac Blvd., Brampton, Ontario, Canada. L6S 5P6. Zero sequence currents, in simple terms, are those found in the neutral conductor. They include the unbalanced 60 Hz currents and the 3rd, 9th, 15th and other triplen harmonic currents. Zero sequence currents appear inContinue reading “What are zero sequence harmonic filters and how do they reduce 3rd harmonic currents and prevent neutral conductor overheating?”
Sags and Swells
Published by Richard P. Bingham, Manager of Technology and Products, Dranetz – BMI, 1000 New Durham Road, Edison, NJ 08818-4019, Phone 732-248-4393, Fax 732-287-8320. February 16, 1998 ABSTRACT Sags and swells are the most common types of power quality disturbances. Millions of dollars are lost in productivity each year in the United States due toContinue reading “Sags and Swells”
What is Voltage Drop Study and Analysis
Published by Carelabs, Carelabs is authorized provider of Electrical Installation’s Study, Analysis, Inspection, and Certification services in UAE, and offer voltage drop study and analysis services. Website: carelabz.com Dynamic voltage (IR) drop, in contrast to the static voltage drop depends on the switching activity of the design, and hence it is vector dependent. Designing an ideal powerContinue reading “What is Voltage Drop Study and Analysis”
How do harmonics increase power losses and overheat transformers?
Published by Mirus International Inc., [2010-01-08] MIRUS-FAQ001-B2, FAQ’s Harmonic Mitigating Transformers, 31 Sun Pac Blvd., Brampton, Ontario, Canada. L6S 5P6. Harmonics generated by non-linear loads substantially increase the losses in conventional or K-rated delta-wye distribution transformers. This increase in losses will increase operating costs and can shorten transformer life. The main thrust of the K-ratedContinue reading “How do harmonics increase power losses and overheat transformers?”
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