I don’t know the Dutch language or maybe autotranslate is playing tricks… Aluminium transformer on MP2 4500??? Really??? Hope it’s not talking about the core… :zany_face: :zany_face: But even if it’s about windings, the electrical conductivity will imply a thicker wire, which will negate up to a …

I’m not an expert, but I don’t think aluminum core doesn’t do much for magnetics.

Take a look at the new Multi CL series… I think it was about the cables in the core… they’re supposed to be made of aluminum… [image] Cluster, Cluster - when large Victron microgrid systems? Modifications could I have the cluster docs and firmware please to pl…

[image] [image] The difference between copper winding and aluminum winding used in oil... The difference between copper winding and aluminum winding used in oil immersed transformers

Aluminium and copper are both not magnetic [image] Transformer In electrical engineering, a transformer is a passive component that transfers electrical energy from one electrical circuit to another circuit, or multiple circuits. A varying current in any coil of the transformer produces a…

The toroidal core in the Multi/Quattro probably only has a very small magnetic core itself. That won’t account for the weight… The large cross-sections for the secondary circuit are likely to be relatively large and therefore heavy. Consider the currents used here… so why not use aluminum as well? …

[image] Steffen: The toroidal core in the Multi/Quattro probably only has a very small magnetic core itself FWIK, in low frequency transformers, the core section is directly proportional with the square root of the power. So it can’t be small…

I know that, that’s exactly why I said it won’t do much for the core. Pretty sure Victron knows what they’re doing.

I saw a bit of copper coated aluminum quite a years back in high frequency prototypes. If I recall correctly, the higher frequencies only use the outer layer of the wire anyways, skin effect? Same reasoning around Litz wire.

There are a bunch of things that can be considered as well such as recycling. Aluminium vs copper…

Aluminum (?) transformer on new 4k5 and 6k5 models?

Q&A and troubleshooting

Netrange (Steffen) November 20, 2025, 3:09pm 4

Take a look at the new Multi CL series… I think it was about the cables in the core… they’re supposed to be made of aluminum…

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Aluminum (?) transformer on new 4k5 and 6k5 models?

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