The use of a copper winding as a temperature sensor is not new. The traditional technique is to disconnect the ac power and the load and to quickly make the measurement using an ohmmeter. But the ...

Neoptix Fiber-Optic Sensors has introduced its T/Guard Direct Windings Monitoring System standard with large backlighted LCD and MODBUS RTU communication. Neoptix T/Guard now features a standard four ...

Transformers for power applications often are limited in size by an acceptable temperature rise. An acceptable temperature rise of a transformer is usually dependent on limitations of the materials ...

In the first installment of this series, "Calculating a practical hotspot safety margin", we discussed how two-parameter thermal models assume that the entire motor, including windings, exhibits one ...

There are millions of transformers present in existing electrical grids that interconnect power generation, distribution, and transmission. As these transformers are important assets, they have to be ...

A utility can determine moisture content for steady-state conditions using a family of curves that show moisture content in the paper as a function of relative oil saturation, with temperature as a ...