question

Stan avatar image
Stan asked

MP2 Wrong ACin voltage reading

Hello all,

I am using ESS system (ET340, on-grid ACin, MP2 5kVA, 250/85, Cerbo, Smartshunt) for over one week and I found one problem with ACin voltage readings on Multiplus II.

MP2 shows higher ACin voltage (+5-6V) than the real one (see attached pictures). Multimeter shows exactly the same value as ET340 and on MP2 terminals as well.

How can I solve this issue?

Is it possible to calibrate the voltage sensor in MP2?

Thank you

Regards Stan

et340-voltage.jpg

mp2-voltage.jpg


Multiplus-II
mp2-voltage.jpg (32.0 KiB)
et340-voltage.jpg (32.9 KiB)
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1 Answer
Stan avatar image
Stan answered ·

Today I updated the FW of MP2 to the newest v498, but it didnt help. Still voltage shows +5-6V more than it should.

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