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Suggestion Gridboss Smart Port overcurrent protection too sensitive

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Posts: 5
Topic starter
(@wvannus)
Active Member
Joined: 2 months ago

Hey EG4 staff!

I've got a GridBoss that is triggering smart port overcurrent protection unnecessarily. I've got a 2hp hydraulic pump motor on Smart Port #2, and that protection trips about 10% of the time I start the motor. That Smart Port has an 80A breaker feeding a subpanel, and the motor is on a 30A breaker. The subpanel has no other loads. I'm thinking the Gridboss is seeing the large inrush current during a current sample polling period, tripping the overcurrent protection.

Is there any way to make it behave more like a thermal fuse?

Secondly, is there any way to clear an error with the Gridboss without shutting down all power to it?

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Posts: 135
(@jlankford)
Estimable Member
Joined: 4 months ago

Probably related to this issue. It sounds like there is a software fix, perhaps not released in an official build yet...

https://diysolarforum.com/threads/gridboss-with-flexboss-not-handling-21kw-pass-through.97560/

 

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Posts: 5
Topic starter
(@wvannus)
Active Member
Joined: 2 months ago

Fascinating read, thank you for sharing. This makes a lot of sense. I'm concerned that the relays are being opened for overcurrent protection when they are not rated to make/break at those currents. I hope the software OCP becomes disabled because of that reason.

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