When using 2 strings in a combiner, why would one string voltage measure about 1/2 when one string fuse is blown?
When using 2 strings in a combiner, why would one string voltage measure about 1/2 when one string fuse is blown?
Comments
Dwayne, where was the voltage measurement taken? It sounds like the faulted string on first brush, maybe the faulted module lies somewhere mid-string and that might be why you're seeing half.
The voltage was measured in the SB4000-US inverter after the strings were combined in the combiner of the DC disconnect. A blown fuse was the problem. There were no faults in the module string. The string voltage was normal after the faulty fuse was replaced.
Comments
Dwayne, where was the voltage measurement taken? It sounds like the faulted string on first brush, maybe the faulted module lies somewhere mid-string and that might be why you're seeing half.
The voltage was measured in the SB4000-US inverter after the strings were combined in the combiner of the DC disconnect. A blown fuse was the problem. There were no faults in the module string. The string voltage was normal after the faulty fuse was replaced.