Hello, I have wrong measurements. Did someone see this problem ? System 3x230V without N carlo gavazzi EM540 as grid meter, programmed as 3P Induction stove on three phases after grid meter, before Victron Rest of the house on essentials AC out (2P) Solar panels with inverter (Huawei) on essent…

[image] Datalog: 3x230V without N Are your 230V loads wired in delta ? i.e. 240V L1/L2? This may be the root of the problem, as the Y voltage will be 0.577 of l/l voltage,

Yes, typical Belgian. Delta it is. (3x230V without N) I can live with the wrong voltages measurements as long the consumption would be correct. I cannot see why the PV echo’s exactly in the essentials (577W and 1284W). That’s an error. Also the non essentials is wrong: nothing was connected. It sh…

Hello, I have the same problem here, same configuration, only difference is that there is nothing connected to essential loads. As soon as the Multiplus charges or discharges the battery the AC Loads reading becomes wrong. Here is an example, the AC loads is around 399 W stable (screenshot1). On…

Hello, Is somebody from Victron interested in this topic. I have more and more customers wondering why their consumption reading is wrong and I am tired of explaining that there is no solution… Please help :folded_hands:

You have connected one (1) Multi plus to L1 and L2… NOT between one phase and the neutral? To my knowledge that’s the way fry a mp as each mp is for 230 Volts only… voltage between the phases is 400 Volts

This topic is about a connection on a 3x230V without N network in Belgium.

[image] jhardy: I have more and more customers wondering why their consumption reading is wrong Delta configs are not supported by victron, so i personally would not keep selling systems for delta grid setups. A possible solution could be to recalculate the measured values to match 230/400V …

Hello chrigu, Thank you for your answer. Your are pointing in the right direction but it will take time and effort to find a solution, at least for me. It shouldn’t be a big deal for Victron though. Even if delta is not supported it’s almost working. ESS works well as it uses total power through t…

[image] jhardy: I am not even sure where the 136V voltages come from Thats 230V times (squareroot of three), roughly. The same relation that is between 400V and 230V in a star/wye system. Line-Line versus Line-Neutral voltage. Roughly because (squareroot of three) is only true if the voltage …

Hello, Yes the EM540 is programmed as 3P (without n) In this mode V L1-N, V L2-N … don’t exist as there is no N reference connected but they are still read by Victron EM540 Modbus register : [image] Victron code : [image]

Wrong measurements

DIY

kr0815 12 April 2026 17:17 13

maybe your solution:

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Wrong measurements

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