| 摘要 |
A pilot wire distance compensating circuit including a two terminal-pair network 1,2,3,4 wherein a single unified group of capacitors CR is connected between the input terminals or the output terminals, whereby it is possible to largely decrease the number of the pilotwlre distance compensating circuit capacitors and reduce the volume and cost of the apparatus compared to prior circuits having capacitors connected across both the input and the output terminals. The circuit is used in a transmission line protection system (Figure 2) to compensate for the length of a bypass wire (21) so that relays (RC, OC) responsive to currents in the transmission line to effect the bypass connection can operate independently of the wire. <IMAGE> |
