| 摘要 |
PURPOSE: An integrated blocking filter by integrating a blocking filter with a phase coupler is provided to reduce the complexity of a communication system by integrating the phase coupler to the blocking filter. CONSTITUTION: An integrated blocking filter(100) is comprised of a blocking filter and a phase coupler, and is installed between a molded case circuit breaker and an earth leakage breaker. The blocking filter is comprised of a plurality of reactors(L1-L8) and a plurality of capacitors(C1-C7). The reactors(L1-L2) are connected to a power line(R), the reactors(L3-L4) are connected to a power line(S), the reactors(L5-L6) are connected to a power line(T), and the reactors(L7-L8) are connected to a common line(L). The capacitors(C1-C4) are respectively connected between a contact point(P1) and a ground line(Gr), between a contact point(P2) and the ground line(Gr), between a contact point(P3) and the ground line(Gr), and between a contact point(P4) and the ground line(Gr). The phase coupler is comprised of capacitors(C5-C7) connected between the power lines(R,T,S) and the common line(L). |
