Protective relay

https://www.wikidata.org/wiki/Q503732

Field Hierarchy

Parent
Physics 31.7M papers	Quantum mechanics 13.1M papers	Thermodynamics 5M papers	Power (physics) 2.5M papers
Electric power system 250k papers		Relay 67.6k papers
Current
Protective relay 8,434 papers
Child
Digital protective relay 2,340 papers

Trends

Notes

History