Vo4 and Solar Working Together

Many solar PV installations are configured as per the diagram shown below, in some circumstances, where local voltages are already high any fluctuations may push the voltage above the range of the inverter, in which case it will cut out.

In these cases installing VO4 in the position indicated will ensure that the inverter is not exposed to the higher mains voltage spikes and will cut out less frequently.

It is a particular feature of VO4 that it will allow current to flow in both directions.

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