Component Guide

Planning an Ensemble Technology System – North America
6 © 2020 Enphase Energy Inc. All rights reserved. December 8, 2020
Split Enphase Systems on a Single Site
If the total PV system size exceeds what can be supported by the total Encharge system size, it is necessary to “split”
the PV systems into a microgrid, and a non-microgrid PV system, each with their own Envoy. For guidance PV system
size pairing with an Encharge system, see the sections: IQ Microinverter PV System to Encharge Pairing and M-Series
Microinverter PV System to Encharge Pairing
This configuration does not support power export limiting.
The following items are needed to create a split system.
1. Two Envoys:
• Multiple Envoys are required for split systems, because the microgrid and non-microgrid PV
microinverters operate with different grid profiles and parameters.
2. Installation of a power line filter:
• When multiple Envoys exist on site, a power line filter must be installed to prevent cross domain
communication.
• The Q-LCF-064-1P is a tested solution that is compatible with Enphase IQ6/7 microinverters and IQ
Envoy at up to 64A of continuous current.
• Similarly, the RP220, RP225, RP230, or RP240 series from Radius Power can be used with
M215/M250 microinverters and the Envoy-S Metered.
• Enphase recommends installing the power line filter with the microgrid Envoy and all microgrid PV
microinverters on the “Load” input of the filter and the Enpower source on the “Line” input of the filter.
(See figures below.)
3. Installation of additional Consumption CTs:
• Depending on the configuration of the split system, an additional pair of Consumption CTs may need
to be added. See the following for details.
Split systems that DO require additional Consumption CTs
If the non-microgrid PV system is interconnected on the load side of the primary microgrid Envoy’s Consumption CT,
a second set of Consumption CTs must be added around the non-microgrid PV conductors and connected in parallel
with the primary microgrid Consumption CT wiring to the microgrid Envoy. Please refer to Figure 6 and Figure 7 for
more details and the orientation of the CTs.
Figure 6: “Split” PV system that requires an additional set of Consumption CTs