Differential protection is best understood as a fault control philosophy rather than a component category. The relay itself is secondary to the scheme it enforces. Once a zone is defined, the system ...

Measuring dynamic currents with an oscilloscope is challenging, but this updated differential current probe makes it simple ...

Schweitzer Engineering Laboratories, Inc. has announced three new additions to the popular SEL-787 family of differential protection relays, providing low-cost, versatile transformer differential ...

Current sensing has become an essential part of the protection scheme in many circuits. By measuring the current, a myriad of different protection methods can be implemented. It is a good preventive ...