Relay Class Current Transformers

Introducing the new online T&DW Books, where you can find and purchase the very latest Power Utility information from titles such as Bushings for Power Transformers, Lineman and Cableman’s Handbook 12/e, Power Quality in Electoral Systems, National Electrical Safety Code (NESC) 2012 Handbook and more. For detailed book descriptions and pricing information click on the link to BuyPenton.com.

The Revised CHANCE® / Hubbell Power Systems Grounding Encyclopedia on temporary grounding for de-energized construction and maintenance, covers grounding practices; electrical current’s effects on humans; OSHA requirements; ASTM, IEEE and IEC standards; step- and touch-potential; equipotential zones; equipment and applications; and installation procedures for overhead, underground, substation and truck grounding.

Use this new web application tool to help you evaluate lightning performance for typical 34.5, 69, 138 and 230 kV lines.

Burns & McDonnell T&D Toolkit: A free resource of tools, calculators and charts to help you design your next T&D project.

T&D World University - Get the training you need without leaving your office.