IEEE To Revise C37 Standard For Transient Recovery Voltage

January 28, 2010

Additional C37 Standards Revised, Reaffirmed

Piscataway, NJ - The IEEE has approved work to begin on a revision to one of the standards in the IEEE C37™ family of switchgear standards.IEEE PC37.011™, "Guide for the Application of Transient Recovery Voltage for AC High-Voltage Circuit Breakers," will be revised to bring it into line with two other standards in the family. The standard provides an application guide on the TRV ratings given in IEEE C37.04™ for ac high-voltage circuit breakers rated on a symmetrical current basis.

IEEE also announced approved revisions to two existing standards: IEEE C37.42™, "Standard Specifications for High Voltage (> 1000 Volts) Expulsion Type Distribution Class Fuses, Fuse and Disconnecting Cutouts, Fuse Disconnecting Switches, and Fuse Links and Accessories Used with These Devices" and IEEE C37.015™, "Guide for the Application of Shunt Reactor Switching."

Finally, IEEE has reaffirmed two additional C37 standards: IEEE C37.81™, "IEEE Guide for Seismic Qualification of Class 1E Metal-Enclosed Power Switchgear Assemblies" and IEEE C37.82™, "IEEE Standard for the Qualification of Switchgear Assemblies for Class 1E Applications in Nuclear Power Generating Stations." The standards are all sponsored by the Switchgear Committee of the IEEE Power & Energy Society.

SOURCE: IEEE