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Power Quality & Grounding

Power Usage Effectiveness in Data Centers

Guidance for calculation of efficiency in data centers BY VICTOR AVELAR, Schneider Electric The benefits of determining data center infrastructure efficiency as part of an effective energy management plan are widely recognized. The standard metrics of power usage effectiveness (PUE) and its...
Power Quality & Grounding

Go with the Power Flow

The importance of load studies BY KATHLEEN WOLF-DAVIS with CASY HENRY, Megger If you’re running an industrial power system—whether for an airport, a mill, a factory or a smelter—you’re focused on more than the traditional utility concept of keeping the lights on. You definitely need that...
Power Quality & Grounding

The Art of Ground Testing

Correcting the misconceptions of ground testing BY JEFF JOWETT, Megger Ground resistance testing is sometimes described as an “art”, and indeed something can be said for that description. Familiarity with the basic issues and common problems, however, can take much of the “art” out of it...

INSULATION RESISTANCE TEST

Insulation Resistance (IR) test, often called Megger test, is more than 100 years old and assumed to be a very straightforward test. During my inspection and testing work in the past 15 years in Canada, US, and internationally, I have seen different practices of performing and interpretation of IR...

Grounding and Bonding

How to improve your NEC/CSA Installations

Grounding and Bonding are the least understood, the most misinterpreted and confusing elements in modern electrical and electronic systems and leads to poor design and installation work — especially as it relates to the Canadian Electrical Code (CEC) and to the National Electrical Code (NEC)...
Home PQ & Grounding

PQ & Grounding

Electrical Grounding and the Weather

How resistance testing is affected by the elements

BY JEFF JOWETT, Megger

Ground resistance testing is affected by the weather as much as any common electrical test—and sometimes even more so. Both the instrument and the test item are affected. With ground resistance testing, the test item is not so readily managed as a motor or electrical circuit which can be dried, cleaned, placed in a controlled environment or some other adaptation to accommodate easy...

T&D Buyer’s Guide Companies

PQ & Grounding Videos

G&W Electric Viper-HV - The First and Only High-Voltage Recloser

Advanced Field-Testing Technologies for Oil Filled Transformers

Albarrie's Oil Blocking Mat Demonstration - Secondary Oil Containment System

PQ & Grounding Products

VLF and Tan Delta: Ideal for testing cables rated up to 25 kV

Breaker Performance Monitor

OMICRON MONTESTO 200

PQ & Grounding Shared Media

Catalog

Electrical Transformer Testing Handbook, Vol. 63

Article

Improved Transformer Temperature Monitoring - Transformer Magazine

Catalog

Power Quality, Grounding and UPS Handbook Vol 10