imbalanced voltages

If you experience any misbehaviour of two inverters or more when they are connected in parallel, it is critical to measure the actual output voltage with a multimeter.

The pictures below illustrate the measured voltage before and after the calibration. If two inverters are paralleled correctly and the error 08 appears on the screen, a large circulating current occurs due to the voltage difference between the two machines.

When off-grid inverters are operated in single or three-phase mode they must generate exactly the same voltage, we advise our customer to check the voltage of the inverter before switching on the breakers that interconnect the two inverters.

If you experience any problems, you have to contact Voltacon to get the calibration procedure.

230VAC Output voltage – Calibrated

The inverter actual output is not calibrated, the LCD indicates 230VAC but the actual voltage is

228V.