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solarrex avatar image
solarrex asked

Placing 3 phase loads between ET340 Meter and 3 Multiplus II

Hi there!

I am planning an ESS three phase system, and would like to know if it is possible to place three phase loads between the meter (ET340 in this case) and the 3 Multiplus II (one per each phase).

The order of the components would be as follows (from mains to loads):

AC 3 phase Mains (+ Utility meter + mains protections). 230V between phases (127 V between phase and neutral)

|

ET340

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-------> 3 phase motor (elevator)

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Autotransformer (230V/400V)

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Multiplus II + Multiplus II + Multiplus II

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<----------- 3 phase Fronius Symo

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RCD & ThMg breaker + RCD & ThMg breaker + RCD & ThMg breaker

Loads (mono) + Loads (mono) + Loads (mono)



My main doubt is whether or not is it possible to place a 3 phase load between the ET340 meter and 3 Multiplus II, so normal funcioning of the ESS system does not become affected in terms of metering load and production, as well as orchestrating the overall ESS system.


Thanks !!!


Multiplus-IIFronius3 phase
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Paul B avatar image Paul B commented ·

Why would you not put this on the MP2 AC2 OUT as this is a direct connection to AC1 and would not affect the MP 2 I would have thought

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Daniël Boekel (Victron Energy Staff) avatar image
Daniël Boekel (Victron Energy Staff) answered ·

Hi @solarrex

No the ET340 has to be in the 230V/400V part of the system, otherwise it cannot measure correctly.

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