photonpirate
New Member
- Joined
- May 1, 2022
- Messages
- 1
I've been planning the storage phase of my system with (6) 48v server rack batteries wired in two 15kW parallel strings then to a bus bar keeping them in parallel but as individual banks. I have 3 inverters that will be connected to the same bank pair. I'd like to add a disconnect for each bank to be able to take one out of service and still run off the other if needed.
The dead short protection will be provided by T-class fuses but I'm having difficulty determining the best product for the disconnect and over current protection. I've been looking at the product below:
I highly doubt that I'll ever come close to running all three inverters at even half the rating at the same time. The configuration is designed for redundancy and separate needs which will be managed strategically.
Unless I'm missing something, I think this will suffice.
I'd love to hear any other suggestions.
Thanks
The dead short protection will be provided by T-class fuses but I'm having difficulty determining the best product for the disconnect and over current protection. I've been looking at the product below:
Available on Amazon
ASI NDB1-125C125-2, Miniature Circuit Breaker, DIN Rail Mount High Current Circuit Breaker, 125A, 2 Pole, 240Vac, 60 Vdc, C Trip Curve
With a total of 22kW of inverter with a 2 48v 15kW banks, would I need to plan for over current breaker of at least 250A per parallel string? I understand I can parallel the double pole 125A breaker above to act as a 250A breaker.I highly doubt that I'll ever come close to running all three inverters at even half the rating at the same time. The configuration is designed for redundancy and separate needs which will be managed strategically.
Unless I'm missing something, I think this will suffice.
I'd love to hear any other suggestions.
Thanks