enphase IQ8D-72-E-US Design Manual

Commercial pv design guide microinverter system

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Commercial PV Design Guide

IQ8D Microinverter System

E341165

IQ8D-DG-MKT-00397-02-EN-US-2022-06-10

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Troubleshooting

Summary of Contents for enphase IQ8D-72-E-US

Page 2 IQ8D system components, provides Microinverters. The high-powered, smart-grid-ready guidance on component selection, and provide guidelines Enphase IQ8D Microinverter is the most reliable and for IQ8D system design and installation scenarios. intelligent component of the Enphase small commercial PV The Enphase Commercial IQ8D Microinverter system solution for 208V three phase interconnection.
Page 3: Important Safety Information
Use extreme caution and follow instructions carefully. DANGER: Risk of electric shock Do not use Enphase equipment in a manner not specified by the WARNING manufacturer. Doing so may cause death or injury to persons, This indicates a situation where failure to follow instructions may or damage to equipment.
Page 4 Do not mount the Microinverter upside down. Do not expose the connection. AC or DC connectors (on the Enphase QD Cable, PV module, or the Microinverter) to rain or condensation before the connectors are mated. Refer installation steps mentioned in IQ8D Microinverter NOTES: installation.
Page 5: Enphase Qd Cable Safety
DC generators, and DC coupled batteries, etc. These devices do not behave like standard PV Provide support for the Enphase ; QD Cable every 1.8 m (6 feet). modules, so operation and compliance are not guaranteed. These...
Page 6: Table Of Contents
Enphase QD cable safety � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �...
Page 7 DC Resistance Low – Power Off Condition � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 72 © 2022 Enphase Energy Inc. All rights reserved.
Page 8 IQ8D-72-E-US Microinverter Specifications � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �...
Page 9: List Of Figures
Figure 25: Enphase Frame Mount Bracket ........
Page 12: List Of Tables
Table 20: IQ8D-72-E-US Microinverter Specifications ........
Page 13: Iq8D Commercial Pv System Components And Design Considerations
IQ8D Commercial PV System Components and Design Considerations © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 14: Iq8D System Components
IQ8D System Components Enphase Enphase Enphase IQ8D IQ8D Microinverters QD Cable Commercial Gateway Enphase Installer Platform Enphase Installer App Utility panel Figure 1: IQ8D System © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 15: Table 1: Iq8D System Components
CT-600-SPLIT (600A - 3 CTs Optional) Accessories CELLMODEM-M1-06-SP-05 or Cell Modem CELLMODEM-M1-06-AT-05 Power Line Filters Astrodyne Filters QD-LCF-400-3P (400A) Surge Suppression Surge Protectors Example: Citel DS73RS-120 surge protector; data sheet System Table 1: IQ8D System Components © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 16: Iq8D System Design Considerations
Module Compatibility The Enphase IQ8D Microinverters are electrically and • Voc (Voltage at Open Circuit). mechanically compatible with PV modules as listed in Table 2. Refer to the Enphase Compatibility Calculator at: • Vmp (Voltage at Maximum Power). https://enphase.com/en-us/support/module-compatibility •...
Page 17: Dc Connector Intermatability
Enphase Frame Mount Bracket The Enphase Frame Mount Bracket allows to attach an Bracket comes in two sizes, 35 mm (EFM-35MM) and 40 IQ8D Microinverter easily and rapidly to the PV module mm (EFM-40MM), depending upon the thickness (depth) of frame.
Page 18: Number Of Microinverters Per Branch Circuit
Table 4: Maximum Number of Microinverters per Branch Circuit Grounding Considerations The Enphase IQ8D Microinverters do not require grounding electrode conductors (GEC), nor the equipment grounding conductors (EGC). Your Authority Having Jurisdiction (AHJ) may require you to bond the mounting bracket to the racking.
Page 19: Three Phase Qd Cable Specifications, Cable Types And Ordering Options
QD Cable if they are not used to increase Cable and Raw QD Cable to be installed in conduits, cable cable length. trays, and other raceways. © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 20: Design Considerations For Qd Cable Selection
Alternate layout L1-L2 1 X 18 Module Matrix - 4.6 m, ~15.1 feet J-Box Landscape Ballast Layout L2-L3 L1-L2 L2-L3 L1-L2 L2-L3 L3-L1 L3-L1 L3-L1 Table 7: PV Module Orientations with IQ8D © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 21: Design Considerations For Qd Accessories
QD Cable Clip When the Microinverters are located some distance from The Enphase QD Cable Clip (ET-CLIP-100) can manage one the roof top junction box, it may be most economical to or two QD Cables or Raw QD Cables to a solar mounting use Raw QD Cable (without connectors) to run across rail.
Page 22: Sealing Caps
Sealing Caps Cover any unused QD Cable connector with Enphase QD Cable Terminator watertight Sealing Caps QD-SEAL-10. Listen for a click as Install a terminator (QD-TERM-10) on any cut end of QD the connectors engage. Cable that is not connected to 3 phase AC grid through a junction box or a 3 phase field wireable connector.
Page 23: Design Considerations For Voltage Rise
PV branch circuits and methods for calculating of the PV system. the AC line voltage rise when using the Enphase IQ8D When designing circuits for electrical loads, these Microinverters and the Enphase QD Cable.
Page 24: Iq8D Vrise For 208Vac In Qd Cable
IQ8D Microinverters per branch (208Vac 3 Phase System) #Microinverters VRise (V) VRise (%) 0.07% 0.17% 0.28% 0.46% 0.67% 0.89% 1.18% 1.50% 1.83% Table 11: Internal QD Cable VRise (IQ8D – 208V / Landscape ballast cable, QD-12-42-63) © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 25: Advantages Of Center Feeding Qd Cable Ac Branch Circuit
Table 12 : AC Branch Circuit Supply recommendation Advantages of center Feeding QD Cable AC Branch Circuit Enphase recommends that the total percentage of voltage For IQ8D Microinverter system installations with QD-12- rise in the AC wiring be maximum of 2%, with (an inclusive) 42-63, the voltage rise in QD Cable is >1% for the farthest...
Page 26: Installation Guidelines For Center Feeding (Qd-12-42-63 Landscape Ballast Pv Orientation)
Male Three Phase Field Wireable Connector (QD-CONN-10M) Center Tap Connector; Extension cable to PV sub panel Not for Micro Figure 11: Center Feeding of AC Branch Circuit for installations with QD-12-42-63 (15.1 ft) © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 27: Center Tapping Adapter Cable
300 mm (11.8 inches) 4 Pole Link QD Female Connector (Connect to Center tap connector in Female Three Phase Field Wireable QD Cable) Connector (QD-CONN-10F) Figure 14: Center Tapping Adapter Cable © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 28: Iq8D Commercial Gateway
ENV-IQ8D-AM3-3P Available • Three revenue grade 400A Production CTs (+/-0.5%) - default supply with Gateway Current Transformers • Three or Six optional 600A Consumption CTs (+/-2.5%) Table 13: IQ8D Commercial Gateway © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 29: Wiring Iq8D Commercial Gateway Env-Iq8D-Am3-3P For Three-Phase Applications
1000KCMIL conductors. The diagram below shows how to properly wire an IQ8D Commercial Gateway (model ENV-IQ8D-AM3-3P) into a 208Y/120V three-phase system. Figure 16: IQ8D Commercial Gateway Terminal Block © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 30: Design Considerations For Reliable Plc Communications
Design Considerations for Sites with Power Export Limit requirements The Enphase Power Export Limit (PEL) function can be configured to operate at different power export limits to meet the site requirements, as is required by the local utility service. The value for power export limit is defined within a specific Enphase grid profile.
Page 31 Installer Toolkit. Line communication filter usage shall depend on PLC strength and noise levels on site based on FFT Adequate power line communication between analysis. Gateway and Microinverters – showing three bars © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 32: Multiple Gateways At Single Site
Enphase Microinverter system design can allow multiple Gateways to be installed at a single site. Data from multiple Gateways can be aggregated as a single installation for system monitoring in Enlighten.
Page 33: Internet Connection Options
The IQ8D Commercial Gateway requires a connection to the Internet for reporting to Enlighten. You can provide this connection through an existing broadband router, other Wi-Fi access point at the installation site, or by using the Enphase Mobile Connect cellular modem CELLMODEM-M1-06-SP-05 or CELLMODEM-M1-06-AT-05.
Page 34: Interconnecting Iq8D Microinverters To Other Voltages
Microinverter due to incorrect transformer installation will render the Enphase warranty invalid. NOTE: Enphase IQ8D system interconnection using transformer for grid voltage other than 208V/120V is not compliant under IEEE 1547:2018 standards. Installer should install IQ8D system with transformer only when the system meets all the correct compliance standards applicable for your AHJ.
Page 35: Power Line Filters
Power Line Filters Enphase offers a 400A power line filter for IQ8D System installation. QD-LCF-400-3P is specific for the IQ System Power Line Communication (PLC) frequency. You can use it to filter electrical noise or signals between multiple IQ8D Commercial Gateways and their respective communication domains, and/or noise sources from loads or other devices in commercial and industrial settings.
Page 36: Surge Suppression In Commercial Systems
A panel level surge suppressor interrupts the circuit and isolates equipment from the source of the surge. There are a wide range of devices available from equipment manufacturers with a range of warranties. Enphase does not warrant or guarantee the performance of any of these products. In addition to having some level of surge suppression, it is important to have insurance that protects against electrical surges.
Page 37: Iq8D System Layout Design
IQ8D System Layout Design This section talks about IQ8D system structural layout design once the IQ8D system component selection and single line diagram is completed. © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 38: Information Required For Array Design
Site access (access to arrays for maintenance, etc.). Optimized Site Layout • Site access zones. • Setbacks from roof edges. • Shading zones. • Keep out zones for adjacent obstacles. Figure 20: Optimized Site Layout © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 39: Ac Cabling Layout
AC Cabling Layout Plan each cable segment to allow drop connectors on the Enphase QD Cable to align with IQ8D Microinverter connected in series with 2 PV modules. Allow extra length for slack, cable turns, & any obstructions. Enphase Terminator...
Page 40: Pv Load Center Configuration And Location
E. Enphase recommends that the total percentage of rated) of TC-ER cable, which may be installed in voltage rise in the AC wiring be a maximum of 2%, raceway as per NEC 336.10(3). with (an inclusive) less than 1% voltage rise in the QD G.
Page 41: Consumption Cts
Gateway. Solar Design Software A range of design tools are available to simplify your Enphase Commercial design project. Enphase is supported by major design/simulation tools available in market. Please contact software vendor for more information. © 2022 Enphase Energy Inc. All rights reserved.
Page 43: Parts And Tools Required
(model ENV-IQ8D-AM3-3P) communications gateway Enphase Installer App: Download the Enphase Installer App mobile app, open it, and log in to your Enlighten account. Use it later to scan Microinverter serial numbers and connect to the IQ8D Commercial Gateway track system installation progress. To download, go to enphase.com/toolkit...
Page 44: Iq8D Microinverter Installation
IQ8D Microinverter Installation Installing the Enphase IQ8D Microinverters involves several key steps. Each step listed here is detailed in the following pages. 01� Position the Enphase QD Cable. 06� Terminate the Unused End of the Cable. 02� Manage the Cabling.
Page 45: Figure 23: Qd Cable Clip
When using UL 2703 mounting hardware, use the manufacturer’s recommended torque value Ensure Microinverters are oriented in the correct direction with the correct side facing the solar PV module (bracket side up). © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 46: Figure 26: Frame Mount Of Iq8D Microinverter
The Enphase Frame Mount Bracket allows to attach an IQ8D Microinverter easily and rapidly to the PV module frame. Use the Frame Mount Bracket in rail-less or ballasted solar installations. The Enphase Frame Mount Bracket comes in two sizes, 35 mm (EFM- 35MM) and 40 mm (EFM-40MM), depending upon the thickness (depth) of the PV module frame.
Page 47: Figure 28: Center Feeding Of Ac Branch Circuit
Center tapping adapter cable (QD-LINKFW-10) Male Three Phase Field Wireable Connector (QD-CONN-10M) Center Tap Connector; Extension cable to PV sub panel Not for Micro Figure 28: Center Feeding of AC Branch Circuit © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 48: Figure 29: Qd Terminator
Method B: End-feeding the branch circuit Use the Enphase 3 Phase Field Wireable Connectors A For QD Cable SKUs QD-12-10-150 and QD-12-20-135, (QD-CONN-10M and QD-CONN-10F) for end feeding the voltage rise in the QD Cable is <1% and hence End the AC supply to IQ8D Microinverter branch circuits.
Page 49: Figure 30: Installation Map
Step 07: Create an installation map The Enphase Installation Map is a diagram of the physical A. Peel the removable serial number label from each location of each Microinverter in your PV installation. Copy Microinverter and affix it to the respective location on or use the blank map in Figure 30 to record Microinverter the paper installation map.
Page 50: Figure 31: Dc Connection Of Microinverter
Step 08: Connect two series connected PV Modules to IQ8D Microinverter A. IQ8D Microinverter has Enphase EN4 bulkhead for power is applied. DC connection and bulkhead adapter cable for EN4 to Staubli MC4 connection. If your PV modules have D. Mount the PV modules above the Microinverters TE PV4S SOLARLOK connectors you may plug them Electrical shock hazard.
Page 51: Table 17: Led Indication For Iq8D Microinverter
IQ8D Microinverter has detected a PV panel which is FLASHING RED operating outside arc-safe region. The AC grid is either not present or not within specification Table 17: LED Indication for IQ8D Microinverter © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 53: Startup & Commissioning Using Installer Toolkit
You can update the Gateway software using Installer Toolkit. • A system activation must be created to complete commissioning. This can be accomplished beforehand using Enlighten Manager, or on-site using Installer Toolkit. Figure 33: Installer Tool Kit Settings © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 54: System Activation Using Enlighten Manager
Enlighten, please contact your Enlighten administrator. B. In your Enlighten Dashboard, on the Activations widget, click Add a New System. C. In the Enlighten Manger interface under site activation, Figure 34: System Activation using Enlighten Manager © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 55: Array Builder Using Enlighten Manager
Array Builder using Enlighten Manager Use the Enphase Array Builder to build your virtual Please follow the steps in the videos found here array. You can find a link to Array Builder on the System http://www2.enphase.com/support-north-america/videos/ Activation form or on the Settings ( ) page.
Page 56: Iq8D System Commissioning Process
Figure 37: ITK Systems Details 02 Devices & Array A. Enter the total count of each device type to be added in Enphase customer service to request a new custom the system. grid profile If there is no pre-existing grid profile meeting local AHJ requirements.
Page 57: Figure 38: Itk Scan
Array builder allows importing of CAD file(.dwg), .png and .jpg for background details. Array Setup Module Selection for IQ8D Assignment IQ8D Assignment IQ8D Assignment IQ8D Assignment Landscape Portrait and Phase identifier Figure 39: ITK Array Builder Microinverter © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 58: Figure 40: Itk Phase Connection
Installer can filter the Microinverters based on the updated by Gateway. line-to-line connection in ITK. Figure 40: ITK Phase Connection 03 Set Utility Tariff • It is an optional step, recommended to skip. © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 59 The user must input network and Gateway’s locally broadcasted network. password information in the Wi-Fi section. If connecting ethernet, simply plug the cable into the Gateway. Figure 41: Gateway Connectivity © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 60 • The Gateway requires a means of communicating to the web to display Internet connectivity. Ensure that the Gateway Wi-Fi access has been configured, Figure 42: Gateway Connectivity © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 61: Figure 43: Meter Configuration
PLC uses for communication. The installer can export/share the report generated. Figure 44: Identifying cross talking Microinverters in the array Figure 45: Powerline Communication Analysis FFT Scan © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 63: System Monitoring Using Enlighten Manager
Kiosk view The system summary page contains the below information - Dollar value created; Energy generated; System name, Location and Last Updated time; Environmental Benefits; Map view Figure 46: System Summary Details © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 64: Figure 47: System Energy Data
(up to 5) • System aggregate • micro level for multiple micros (up to 5) Figure 47: System Energy Data Figure 48: Array Energy Data Figure 49: Microinverter Energy Data © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 65: Figure 50: Phase Wise Energy Data
Enlighten manager also offer an option to include events related details to be included in telemetry graph. Figure 52: Telemetry Data © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 66: Array Details
Gateway and the Installer shall be able to find all the Microinverters that are part of the Gateway and the Branch circuit. Figure 53: Array Builder Post commission, each Microinverter shall show phase information of each Microinverter in the array view. Figure 54: Array Level Phase Connection Details © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 67: Figure 55: Microinverter Array View
Microinverter when you click on a module in array view. You can also see signal strength for each Microinverter in 5 bars. Figure 56: PV Module Details & Signal Strength © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 68: Figure 57: Microinverter Level Data
Figure 57: Microinverter Level Data Enlighten manager provides array view where the array information like Array Type, Azimuth, Tilt and number of Microinverters are shown. Figure 58: Array Information Tilt, Azimuth © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 69: Troubleshooting Using Enlighten Manager And Itk
30 minutes. Enlighten screen during commissioning in Array Builder Figure 59: Identifying Cross Talking Microinverters During Commissioning Enlighten screen post commissioning Figure 60: Identifying Cross Talking Micros post commissioning © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 70: Powerline Communication Analysis - Fft Scan
A Request Return link is provided when user clicks on module to initiate a RMA. Figure 62: Initiate RMA from Enlighten Manager Figure 63: Enlighten Manager RMA Details © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 71: Troubleshooting Of Iq8D Microinverter
PV system does not operate correctly. WARNING Risk of electric shock. Do not attempt to repair the Enphase Microinverter; it contains no user-serviceable parts. If it fails, contact Enphase customer service to obtain an RMA (return merchandise authorization) number and start the replacement process.
Page 72: Dc Resistance Low - Power Off Condition
If the Microinverter status shows that there is an active DC Resistance Low – Power Off condition, tap the to send the clear message to the affected Microinverter. The app then indicates that a clear message was sent. © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 73: Figure 64: Itk To Clear Dc Resistance Low Condition
Figure 64: ITK to Clear DC Resistance Low Condition Other Faults: All other faults are reported to the Gateway. Refer to the Enphase IQ8D Commercial Gateway Installation and Operation Manual at enphase.com/support for troubleshooting procedures. © 2022 Enphase Energy Inc. All rights reserved.
Page 74: Troubleshoot An Inoperable Microinverter
Disconnect and re-connect the DC PV module WARNING connectors. The status LED of each Microinverter will The Enphase Microinverters are powered by DC power from the light solid green a few seconds after connection to PV modules. Make sure you disconnect the DC connections and...
Page 75: Disconnect A Microinverter
If problems remain after following the troubleshooting steps listed previously, contact Enphase at enphase.com/en-us/ support/contact. If Enphase authorizes a replacement, follow the steps below. To ensure the Microinverter is not disconnected from the PV modules under load, follow the disconnection steps in the order shown: A.
Page 76 Status LED on the connector side of the Add the new Microinverter serial number to the Microinverter. Gateway database using ITK camera scan to scan the IQ8D barcode and assigning the device in the array builder. © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 78: Ampacity Calculations For Iq8D Microinverter System
Ampacity Calculations for IQ8D Microinverter System Enphase IQ8D Microinverter supports two series connected PV modules and has a four pin output configuration (L1, L2, L3 and Neutral Sense) with Power on two pins and phase sensing on the other two pins.
Page 79 In this example, a Microinverter subpanel feeds a total of 103 Microinverters divided into 9 branch circuits with 9 Microinverters, 2 branch circuits with 8 Microinverters and 1 branch circuit with 6 Microinverters. Each phase has - © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 80 NOTE: The above methodology is used only for ease of calculations for an unbalanced system. The real current calculations shall involve vector mathematics for current addition as each Microinverter is connected across each phase shall contribute current to all 3 lines – L1, L2 and L3 cables. © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 81: Phase Balancing In Iq8D Installations Using The Three Phase Qd Cable Phase Rotation
1.4 m (4.6 ft) Portrait QD-12-20-135 277 VAC 12 AWG 2.4 m (7.9 ft) Landscape QD-12-42-63 277 VAC 12 AWG 4.6 m (15.1 ft) Landscape Ballast Table 19: QD Cable Types / Ordering Options © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 82: Phase Rotation For Qd Cable
Cable SKU). Refer to section "Design Considerations for Voltage Rise in Commercial PV Design Guide IQ8D Microinverter System" for details on voltage rise calculations and installation guidelines for center tapping of branch circuit with QD-12- 42-63 cable installations. © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 83: Phase Balancing For Iq8D Microinverter System
When connectors in QD Cable are left unused in a three-phase system, it creates a phase imbalance for the system with each phase (L1-L2, L2-L3, L3-L1) having different number of Microinverters. If multiple connectors in QD Cable are skipped over multiple branch circuits, the imbalance shall multiply. © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 84: Figure 70: Itk Phase Connection
ITK provides phase connection details during array builder/commissioning process. Validate your imbalance expectations through ITK. ITK shall be able to share consolidated report of all Micros with each phase connection. Figure 70: ITK Phase Connection © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 85 NOTE: Scenario 1 assumes no connectors are skipped during the installation. If the installation require skipping few connectors, refer to scenario 5 to assess impact on the phase balance for the system. © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 86: Figure 71: Phase Balancing Using Qd Cable Phase Rotation
NOTE: Scenario 2 assumes no connectors are skipped during the installation. If installations require skipping few connectors, refer scenario 5 to assess the impact on the phase balance of the system. © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 87 IQ8D Microinverter System" for details on voltage rise calculations and installation guidelines for center tapping of branch circuit with QD-12-42-63 cable installations. NOTE: Scenario 3 assumes no connectors are skipped during the installation. If installations require skipping few connectors, refer scenario 5 to assess impact on the phase balancing. © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 88 If the number of Microinverters are in multiples of 3 and each IQ8D Microinverter branch circuit has varied number of Microinverters (maximum of 9), then the IQ8D system shall have a balanced configuration across all 3 phases. © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 89 AC branch circuit is end fed and has a varied number of IQ8D Microinverters (maximum of 9) in the branch circuit. Figure 74: Phase balancing using QD Cable phase rotation when using QD Cable QD-12-20-135 (7.9 ft Cable) and branch circuit of varied sizes © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 90 Similar methodology can be used for any system size when an AC branch circuit is center fed and has varied branch circuit size with few skipped connectors. © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 91 • If the number of Micros connected to C1, C2 and C3 type of connectors is not same, please refer to local AHJs rules for acceptable phase imbalance across the system. © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 92: Summary
ITK provides phase connection details during array builder/commissioning process. Validate your imbalance expectations through ITK. ITK shall be able to share consolidated report of all Micros with each phase connection. Figure 76: ITK Phase Connection © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 93: Iq8D-72-E-Us Microinverter Specifications
Overvoltage class AC port 2.2mA AC port backfeed current Power factor setting 0.85 – 1.0 leading or lagging Power factor (adjustable) EFFICIENCY @ 208V IQ8D-72-E-US MPPT efficiency 99.5% CEC weighted efficiency 97.5% © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 94: Table 20: Iq8D-72-E-Us Microinverter Specifications
5. Qualified per UL subject 9703. 7. For field wiring of UL certified DC connectors. 8. Enphase IQ8D microinverter bulkhead and adapter cable male, female DC connectors must only be mated with the identical type and manufacturer brand of male/female connector.
Page 95: Qd Cable Specifications
720h Compliance Type DG, THHN/THWN-2, UL3003 Minimum bending radius R = 4 x OD Cable Dimensions Diameter 11.5mm Sealing Cap Dimensions 28x60x23 Cable Connector Dimensions 82x60x18 Table 21: QD Cable Specifications © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 96: Enphase Iq8D Commercial Gateway Specifications
Split-core current transformers enable consumption metering. (order three or six, as needed) POWER REQUIREMENTS 208Y/120 VAC three-phase Power requirements 220Y/127 VAC three-phase Max 20 A overcurrent protection required CAPACITY Number of Microinverters polled Up to 165 © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 97: Table 22: Enphase Iq8D Commercial Gateway Specifications
Compliance UL 916 CAN/CSA C22.2 No. 61010-1 47 CFR, Part 15, Class B, ICES 003 Compliance IEC/EN 61010-1:2010, EN50065-1, EN61000-4-5, EN61000-6-1, EN61000-6-2 ANSI C12.20 Table 22: Enphase IQ8D Commercial Gateway Specifications © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 98: Photovoltaic Hazard Control System
To enable installed system to comply as a Photovoltaic Hazard Control System (PVHCS) installers shall at a minimum perform the following tasks. Before installing or using the Enphase Microinverter in a system, read all instructions and cautionary markings in the technical descriptions, on the Enphase equipment and all other photovoltaic (PV) equipment.
Page 99: Table 23: Photovoltaic Hazard Control System
Adapter Field Wireables - QD Sealing Cap Enphase AC Connector Cap/702-01022 Listed, UL9703 E486080 QD Cable Field Wireables - Terminator Enphase Listed, UL9703 E486080 Terminator/740-00722 Table 23: Photovoltaic Hazard Control System © 2022 Enphase Energy Inc. All rights reserved. IQ8D-DG-MKT-00397-02-EN-US-2022-06-10...
Page 100 PV Rapid Shutdown must be installed and operational Examples are: including activation device and required markings. • Service disconnecting means The Enphase inverter series IQ8D is UL Listed as PV • PV system disconnecting means Rapid Shut Down Equipment and conforms with NEC •...
Page 101 © 2022 Enphase Energy Inc. All rights reserved. Enphase, the Enphase logo, IQ System Controller, IQ Battery, IQ Gateway, IQ Combiner, IQ Microinverter, Enphase Installer App, Enphase App, and other trademarks or service names are the trademarks of Enphase Energy, Inc. Data subject to change.

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