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murphy-r avatar image
murphy-r asked

Lithium Smart 330A short-circuit current rating

Hello folks,

Working on install with Victron Lithium Smart 330A battery to a Lynx distributor system. Question on fusing. I am trying to find out if Victron publishes the short-circuit current rating so I can validate that the MEGA fuse in the Lynx distributor has a high enough AIC for the battery OR whether I need to go to an external class T fuss with a higher AIC.

This is separate from fusing to meet the minimum requirement of protecting the battery cable and more in understanding the AIC rating I need to have.

Lithium Battery
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1 Answer
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wkirby answered ·

Cells of this size are typically down to 0.1mΩ depending upon SOC of course. So 0.4mΩ per battery.
Excluding cables, fuses and the component at fault, that would be 32kA.
Calculate the impedance of the rest of your circuit, cables, busbars etc, to find the value of the fault current in your circuit.

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