Q: What is the preferred way of protecting a reverse loop with circuit breaker management and still having automatic reversing?
A: There are two ways of protecting a reversing section with a circuit breaker and reversing section controller.
1. Use one PM42 (circuit breaker manager) and one AR1 (automatic reversing section controller).
2. Use two PM42s (one as a circuit breaker manager and one as a reverse section control).
The following diagram displays both methods:
a) The first method (left), is where one section of a PM42 configured for circuit breaker operation feeds one or more AR1s (automatic reversing section controller), or
b) The second method (right) uses two PM42s with one acting as a circuit breaker and the second acting as a n automatic reverse section controller.