15kV Fused Disc Sw with arc flash sensor

[Dale001289]

We have a fused 15kV load break switch that is attached to the primary side of a 2MVA, 15kV-480V, 3W,3Ph dry type power transformer. There is an arc flash sensor inside the compartment but I’m not sure how this interfaces with the fused disconnect switch. Has anyone worked with this before?

 

[D. Castor]

The arc sensor generally connects to a protective relay designed to accept the sensor input - usually fiber optic. The relay would be configured to trip an upstream circuit breaker, since the load break switch cannot clear faults. Must be some drawings somewhere.

 

[Dale001289]

The arc sensor generally connects to a protective relay designed to accept the sensor input - usually fiber optic. The relay would be configured to trip an upstream circuit breaker, since the load break switch cannot clear faults. Must be some drawings somewhere.

Thanks what I thought - thanks D. Castor