XYH Solar Plus

Solar plus specialized for solar on grid system

How does the PV + work?

Solar PV systems have to increase the supplied voltage, by typically 4 volts, to be able to push the generated energy around your property and if not used back onto the national grid.

The increase in voltage and losses in wiring circuits can cause inverters to prematurely shut down on over voltage settings.

By monitoring the incoming supply voltage the PV+ unit allows the PV inverter to compliantly stay in circuit longer, preventing nuisance over voltage shut down and increasing PV generation. 

Furthermore like all electrical appliances manufactured for Europe and the UK, Solar PV inverters are designed to operate at 230V. Running inverters closer to their designed voltage will help prevent over heating of the appliance. 

Why do I need a PV Plus?

According to a recent report carried out by Western Power Distribution over 50% of our homes and businesses are supplied at a voltage above 243.8V, with nearly 7%of these being supplied with a voltage above 248.8V!

Although this falls well within the allowed supply voltages of 207/253V it can lead to loss of generation from your PV system. Reducing precious free generated energy and potentially reducing your return on investment.

PV+ dimension and wire connection introduction

PV+ Technical Parameter

How does the PV+ help?

By monitoring the incoming supply voltage, the PV+ unit allows the Solar PV inverter to compliantly stay in circuit for longer, preventing nuisance over voltage shut down and keeping you generating for longer. Meaning a faster return of investment for existing and new systems alike.

Additionally, as excessive voltage is given up as heat in electrical appliances, running the PV inverter closer to it’s designed voltage will reduce stresses caused by overheating and potentially help increase it’s operating life.

Graph below shows Omnik 3kWp inverter October 2013 clearly showing loss in generation throughout the day.

Graph below shows same day inverter output voltage consistently above 250V

Graph below shows same Omnik 3kWp inverter October 2014 after PV+ technology has been installed. Clearly showing no over-voltage shut down and loss of generation.

Graph below shows same day inverter output voltage consistently below 250V

Table below shows month on month generation.

Note the difference in kW/h generated after PV+ technology was installed.