Published by Mariusz NAJGEBAUER, Krzysztof CHWASTEK, Jan SZCZYGŁOWSKI,Institute of Power Engineering, Częstochowa University of Technology Abstract. The paper presented the possibilities of improvement in properties of electric distribution transformers through the use of new soft magnetic materials, mainly amorphous alloys, as transformer cores. The properties of amorphous were compared to conventional electrical steel sheets. EconomicContinue reading “Energy Efficient Distribution Transformers”
Tag Archives: Safety/Protection
Stolen Electricity or Gas Meter?
Published by CallMePower | Selectra LLC Has your electricity or gas meter been stolen? Find out here what to do if your meter has been snitched. Why are meters stolen? Electric meters contain electronic components which can be sold on the black market. Copper, an expensive metal with high conductivity, is usually present in electricityContinue reading “Stolen Electricity or Gas Meter?”
Wire Wrapping for Low Current Monitoring
Published by Veris Industries, Veris Application Note VN35 – Wire Wrapping for Low Current Monitoring. The information provided herein is intended to supplement the knowledge required of an electrician trained in high voltage installations. There is no intent to foresee all possible variables in individual situations, nor to provide all training needed to perform theseContinue reading “Wire Wrapping for Low Current Monitoring”
High Voltage Test Transformers, Construction, Design and Their Application in HV Testing System
Published by Bogdan TUŁODZIECKI, Electric Apparatuses Factory Zwarpol Ltd. in Warsaw Abstract. In this article were described the most frequently used constructions of high voltage test transformers. There were presented defects, advantages and application of describing constructions. There were described how to design high voltage test transformers and what is important during their design. OnContinue reading “High Voltage Test Transformers, Construction, Design and Their Application in HV Testing System”
Prospective Short Circuit Test and Prospective Fault Current Test (PSC & PFC TEST)
Published by Carelabs, Carelabs (Carelabz) is authorized provider of Electrical Installation’s Study, Analysis, Inspection, and Certification services in UAE. Website: carelabz.com Prospective Short Circuit (PSC) and Prospective Fault Current (PFC) are both intended to calculate the highest current that will stream within a fault loop path during the occurrence of an electrical flaw as needed by rules. The Prospective Short Circuit Current (PSC) is the utmost current that could flow between Line and Neutral conductors onContinue reading “Prospective Short Circuit Test and Prospective Fault Current Test (PSC & PFC TEST)”
Distribution Transformers Protection Against High Frequency Switching Transients
Published by Dariusz SMUGAŁA1, Wojciech PIASECKI1, Magdalenia OSTROGORSKA1,Marek FLORKOWSKI1, Marek FULCZYK1, Paweł KŁYS2ABB Sp.z.o.o., Corporate Research Center, (1), ABB Sp.z.o.o., ABB Distribution Transformers, (2) Abstract. Distribution transformers protection method against high frequency transients generated during Vacuum Circuit Breaker (VCB) operations is presented in this paper. ATP/EMTP simulations of transients generated during the VCB operation andContinue reading “Distribution Transformers Protection Against High Frequency Switching Transients”
Steel Plant Transformer Operational Issues
Published by Tadeusz GLINKA1,2, Marek GLINKA2Politechnika Śląska w Gliwicach (1), BOBRME Komel (2) Abstract. Design of steel-plant furnace three-phase transformer (110 kV/(350 to 500) V, 50 kA) and its operating conditions are described in the paper. After three months of operation this transformer failed. Cause of failure, its course and damage to transformer winding areContinue reading “Steel Plant Transformer Operational Issues”
The Effect of PWM Frequency on the Effectiveness of Protection Against Electric Shock using Residual Current Devices
Published by Stanisław CZAPP , Gdańsk University of Technology, Faculty of Electrical and Control Engineering Abstract. In the paper spectral analysis of the distorted earth fault currents in circuits with variable speed drives is performed. Effectiveness of protection against electric shock using residual current devices in circuits with variable speed drives for various PWM frequenciesContinue reading “The Effect of PWM Frequency on the Effectiveness of Protection Against Electric Shock using Residual Current Devices”
Using Portable/Emergency Generators Safely
Published by U.S. Department of Energy (DOE), Office of Cybersecurity, Energy Security, and Emergency Response, Website: energy.gov Power outages are common during disasters, and they can last for several days. You can reduce your losses and speed the recovery process with an emergency generator. Portable generators made for household use can provide temporary power to a fewContinue reading “Using Portable/Emergency Generators Safely”
In Case of a Power Outage
Published by Silicon Valley Power® (SVP), City of Santa Clara, California, USA. Power outages are inconvenient for everyone, and we at Silicon Valley Power (SVP) do everything we can to reliably maintain your power. When we do have an outage, SVP is dedicated to resolving the problem as quickly as possible. We take pride inContinue reading “In Case of a Power Outage”
Power Quality Blog 