Applies to line traps inserted into high-voltage a.c. transmission lines that prevent undue loss of carrier signal power in the range 30 kHz to 500 kHz under all power system conditions, and that minimize interference from carrier signalling systems on adjacent transmission lines.
WITHDRAWN
IEC 60353:1971 ED1
PUBLISHED
IEC 60353:1989 ED2
60.60
Standard published
Nov 15, 1989
PUBLISHED
IEC 60353:1989/AMD1:2002 ED2