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IEC 61850 GOOSE Interoperability
GOOSE messaging can today be considered a working technology. In order to commission substations with the new IEC 61850 technology, there is need to use some new tools and methods. The key for these tools and methods is, paradoxically, implicitly available in the IEC 61850 standard itself.
Published: 16 March 2017
Guide to transformer winding resistance measurements
Measuring a transformer's DC resistance from one external terminal to another can reveal a great deal of information about the transformer. In addition to the obvious faulted winding (i.e., an open winding or shorted turn), more subtle problems can be detected.
Published: 13 March 2017
Testing electric vehicle supply equipment
Most installations require an additional connection to ground at the charging point, so that there is still a form of protection under fault conditions. This connection would be made by an earth spike/electrode driven into the ground.
Published: 8 March 2017