The control and signal circuit of the three-out-of-two incoming circuit breaker

The control and signal circuit of the three-out-of-two incoming circuit breaker

FU:Fuse

SFA:change-over switch

SFB:change-over button

KFM:Intermediate relay

CBC:Closing coil

QA:Travel switch

CBO:Opening coil

PGR:Red signal light

PGG:Green signal light

PGW:White signal light

BG1:Circuit breaker hand test position

BG2:Circuit breaker hand working position

1-The incoming line isolation cabinet

2-Metering cabinet

3-Self-disconnecting circuit breaker cabinet