enphase IQ8P-3P-72-E-US User Manual

IQ8 Commercial Microinverter grid-tied PV system
20 © 2023 Enphase Energy Inc. All rights reserved. November 2023
USG-00026-1.0
multiple center tap connectors in the branch circuit. Select the center tap connector
such that a maximum of 9 IQ8 Commercial Microinverters are installed on either side of
the center tap connector to limit voltage rise <1% in the QD Cable.
• Use a female three-phase field wireable connector (QD-CONN-10F) to connect the
extension cable to the 3-pole 20 A over-current protection device (OCPD) in the PV
subpanel.
2.3.2 IQ8 Commercial VRise for 208 VAC in QD Cable
Refer to the following tables to find the VRise in QD Cable for your project based on the number of IQ8
Commercial Microinverters in an AC Branch Circuit.
Table 8 through Table 15 below provide VRise values for the IQ8 Commercial Microinverters in an AC
branch circuit (with a maximum of 9 microinverters per branch circuit) for multiple QD Cable options.
Use these values to help calculate the total VRise for your project based on the number of
microinverters in the branch circuit. As the number of microinverters in a branch circuit increases, the
voltage at each microinverter rises in an exponential manner.
Portrait PV module orientation – 1.7 m (5.6 ft) pitch
Table 8: Internal QD Cable VRise (IQ8P-3P – 208 V/Portrait cable, QD-12-13-120)
IQ8P-3P-72-E-
US
IQ8P-3P Microinverters per branch (208 VAC three-phase system)
1 2 3 4 5 6 7 8 9 10 11 12
VRise (V) 0.051 0.117 0.193 0.32 0.461 0.614 0.817 1.035 1.264 1.544 1.838 2.144
VRise (%) 0.02% 0.03% 0.09% 0.15% 0.22% 0.29% 0.39% 0.50% 0.61% 0.74% 0.88% 1.03%
Portrait PV module landscape – 2.4 m (7.9 ft) pitch
Table 9: Internal QD Cable VRise (IQ8P-3P – 208 V/Portrait cable, QD-12-20-120)
IQ8P-3P-72-E-
US
IQ8P-3P Microinverters per branch (208 VAC three-
phase system)
1 2 3 4 5 6 7 8 9 10 11 12
VRise (V) 0.072 0.165 0.272 0.451 0.651 0.866 1.154 1.461 1.784 2.18 2.595 3.027
VRise (%) 0.03% 0.08% 0.13% 0.22% 0.31% 0.42% 0.55% 0.70% 0.86% 1.05% 1.25% 1.46%
Portrait PV module landscape – 2.9 m (9.5 ft) pitch
Table 10: Internal QD Cable VRise (IQ8P-3P – 208 V/Portrait cable, QD-12-25-108)
IQ8P-3P-72-E-
US
IQ8P-3P Microinverters per branch (208 VAC three-
phase system)
1 2 3 4 5 6 7 8 9 10 11 12
VRise (V) 0.087 0.199 0.328 0.545 0.787 1.047 1.394 1.765 2.156 2.634 3.136 3.657
VRise (%)
0.04
%
0.10%
0.16%
0.26%
0.38%
0.50
%
0.67%
0.85%
1.04%
1.27%
1.51%
1.76%

enphase IQ8P-3P-72-E-US Specifications

General

Brand	enphase
Model	IQ8P-3P-72-E-US
Category	Inverter
Language	English