ABB PR521 - Definite Time-Delay Curve for Internal Earth Fault; Internal Earth Fault Protection Curve

36/40 - 647008/002 - 2000/05 it-en
10.6. Curva di intervento a tempo fisso per prote-
zione di guasto a terra attraverso toroide
interno
10.6.Definite time-delay curve for earth fault
protection by means of internal toroidal
transformer