E value converter
DC supply negativeconverter 1
(frontal 50/65/80kW): EQ100X1:5 - EZX24:5 - EZ130X1:C5
0...-12V = 0...-375V if converter is stand-alone (EQ X1 not connected)
if in normal operation: E_PO + E_NG >> 445VDC = 10V measuring
input EZ130 X1:A5 - X1:C5
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