About: protective relay

Premodifier: protective
Head noun: relay

Same concepts
http://dbpedia.org/resource/Protective_relay

Broader concepts

label	provenance	confidence
protective device	isap:155937594	0.821987
device	isap:155937580	0.727927
intelligent electronic device	isap:155937619	0.627390
monitoring	isap:258430062	0.330659

Narrower concepts

label	provenance	confidence