By the 1990s, 16/32-bit processors enhanced protection capabilities, and the IEC 61850 standardization process began. In 1987, PILZ introduced the milestone emergency stop relay PNOZ. In 2010, ABB launched the Relion. Before the 20th century, engineers protected electrical equipment with simple fuses. These devices could only detect a current increase and disconnect the circuit. Dolivo-Dobrovolsky introduced the first. SIEMENS performed a lot of tests with new digital relays- in the early 1990s in Eastern Europe (Ukraine, Poland, Russia, Czech Republic, Latvia, and Romania). The new distance relay 7SA513 could be tested in Lithuanian 330-kV- grid, as a part of the new interconnected grid of the Baltics (Latvia. Protective Relays — Feature Past, Present, and Future. a Path of Great Resistance ecially when that industry has engrained roots of conservatism as a basis of its culture. Edison's dream of lighting the world using electricity spawned the largest industrial infrastructure in the world and enabled. Relay Testing – Testing Devices in the 1990s (Part 3) by Walter Schossig, Germany, and Thomas Schossig, OMICRON electronics GmbH, Austria his article shall finalize our reports on the 1990s and the entire series on protection testing devices. The 90s have been known for a wide range of test sets. In electrical engineering, a protective relay is a relay device designed to trip a circuit breaker when a fault is detected.
