All grid-connected modules with integrated inverters must comply with all the requirements and tests established in parts 1 and 2 of the UNE-206007 Report. Prior to the connection and/or contracting of self-consumption, and as indicated in section 4 of part 2, this compliance must be certified by a certification body accredited according to UNE-EN 1S0/IEC 17065.
SunPower AC solutions offer higher yield, easier and faster installation, and greater flexibility. There are also other benefits such as reliability, shading advantages and low-light power responses.
With a string inverter there is a single point of failure. If the string inverter fails, the entire array is offline. However, with a microinverter each individual PV module has its own dedicated inverter. If the microinverter (or the associated PV module) should fail. only that PV module is offline while the remainder of the system continues to operate. Enphase microinverters have a publicly stated defect rate of 0.05%, which equates to 1 in 2000. Given that the Enphase defect rate is better than most string inverters, this results in a PV installation with higher reliability and a higher overall system uptime over the life of the array.
Additionally, Enphase microinverters have an estimated useful life of more than 25 years, compared with string inverters that typically last around 10 years.
AC solutions are compatible with AC energy storage solutions. When using Enphase Storage, you can see the energy flows on Enlighten, Enphase’s system monitoring application. If you choose a different storage solution provider, you will need to use their monitoring application to see the energy flows of the battery.
In single-phase, 10 microinverters can be connected. In a three-phase installation, up to 30 microinverters can be connected on a single 20A three phase circuit breaker. Larger systems can be constructed with multiple AC branch circuits.
The Enphase three-phase Q Cable allows balanced and automated power management of each phase. Alternatively, when using three single-phase cables, care must be taken to balance the phases by installing a similar number of panels on each phase.
The Envoy-S communications gateway can also provide phase imbalance monitoring to ensure authorised limits are not exceeded. The Envoy is able to manage PV power production at the microinverter level to maintain balance within set limits.
If an issue is detected via the Enlighten monitoring platform, please contact Enphase Customer Support. If the issue is related to the microinverter, Enphase will provide any service required under their warranty coverage. If Enphase determines the issue is related to the panel, the service will be transferred and supported by Maxeon Solar Technologies under the appropriate SunPower panel line warranty.
Yes, AC modules can be installed on Delta grid arrangement with 230V between phases. No additional transformer equipment is required for typical LV connections. Alongside the microinverters that are supplied as part of the PV module, installers will need to purchase Q cables, cable accessories and the Envoy-S communications gateway. Contact your Sales Manager to access additional installer tools to learn more about site design and balance of system requirements. In addition to the AC module, what additional components are needed to complete the installation? In addition to the AC module, installers will need to purchase Q cables, cable accessories, and the Envoy-S communications gateway. Contact your Sales Manager to access additional installer tools to learn more about site design and balance of system requirements.
A simulated PV system performance has been evaluated in Madrid with the following results for roofs with limited space available:
In a space unconstrained situation also in Madrid:
SunPower systems will also benefit from leading warranty coverage—up to 40 years in the case of SunPower Maxeon AC panels. Enphase microinverters are warranted for 25 years. For assumptions and a personalized simulation, please contact us to be connected to a SunPower installer.
Some customers have achieved some clever customised DIY solutions for re-directing surplus power using Enphase APIs, however, Enphase does not currently offer products that re-direct surplus power.