PREPARATION
A ) Download the Enphase Installer Toolkit mobile app and open it to log on
to your Enlighten account. With this app, you can connect to
the IQ Envoy to track system installation progress. To down-
load, go to
B ) Consumption metering is optional. If desired, consumption
CTs are required (not included with NPR) and are installed
in the system breaker panel, then wired into the NPR. Check
the box for the following items:
•
Enphase Three Phase NPR (IQ Envoy and LTE-M cell modem included
and integrated within NPR)
•
Enphase Three Phase NPR Quick Install Guide
(this document)
C ) Make sure you have the following
required
items:
•
Tools: screwdriver, Allen wrenches (5/16 & 7/16), pliers, and stepped bit drill.
•
Overcurrent protection in the load center in accordance with NFPA
70, §705.12.
•
Suitable mounting hardware: use #10 (or larger) screws that are long
enough to secure the unit to the vertical mounting surface
•
Copper conductors rated for wet locations and sized to meet local
code requirements and voltage drop/rise considerations. Torque
values are listed on the label inside the unit.
•
UL-listed rain-tight hubs for wire entry into the enclosure.
•
Up to four padlocks as needed, to lock the Three Phase NPR cabinet.
D ) Consumption metering is optional. If desired, consumption CTs are
required (not included with NPR) and are installed in the system breaker
panel, then wired into the NPR. To do consumption metering (production
metering is already included in NPR):
•
Make sure you order three split-core consumption metering CTs (order
CT-200-SPLIT).
•
Check that there is enough space in the load center to install CTs.
Do not install the CTs in a panel where they exceed 75% of the wiring
space of any cross-sectional area within the load center.
Q U I C K
I N S T A L L
G U I D E
(Model NPR-3P-208-NA)
How It Works
POWER LINE
COMMUNICATIONS
CELLULAR
COMMUNICATIONS
IQ Series
Microinverters
Three Phase
NPR
Load
Center
Enphase
Enlighten™
Installing the
Enphase Three Phase NPR
The Enphase Three Phase Network Protection Relay™ (NPR) allows installation of single-phase Enphase IQ Series Microinverters™ in a three-phase (208/120
VAC) system by providing a consistent, pre-wired protection solution for three-phase commercial 208/120 VAC applications. To install the Three Phase NPR,
read and follow all warnings and instructions in this guide. Safety warnings are listed on the back of this guide. Professional installation is recommended.
The Three Phase NPR is an outdoor-rated, NEMA type 4 enclosure containing an Enphase IQ Envoy™ , Enphase Mobile Connect, LTE-M cell modem, isolation
contactor, contact controller, backup power supply, terminal lugs, and wiring for IQ Envoy connections. The NPR also contains Production CTs, wired to the
included IQ Envoy. Use the Three Phase NPR to support the AC connections needed for an Enphase commercial solar installation.
The Three Phase NPR provides electrical connection between a three-phase electrical grid, and a three-phase PV array. During connection, it monitors voltages
on all three phases, and if conditions occur (loss of phase, under/over voltage, etc.) that require disconnection, removes the grid-to-array connection of all three
phases. Operation is automatic with no setting or manual intervention. The Enphase IQ Envoy requires configuration setup as described in this guide.
NOTE
:
If needed, you can find an installation map at the back of any
Enphase Microinverter Quick Install Guide.
NOTE
:
You must mount the Three-Phase NPR within 15º of vertical.
INSTALLATION — Part 1
Note that following instructions outline installation of the Three Phase
NPR in two parts. To ensure successful device detection, complete Part 2
after installing Enphase IQ Microinverters and/or Enphase Battery(ies).
Complete Installation Part 1 before installing Enphase Microinverters.
Choose a Location and Install Mounting Bracket
A ) Chose a vertical surface in a readily accessible location, at least three
feet (91 cm) off the ground if outdoors. Plan to install the Three Phase
NPR at least 12 inches (30.5 cm) off the ground if installed indoors.
B ) Consider the dimensions of the Three Phase NPR, easy access, box
height, and length of cable when selecting the location. The Three Phase
NPR is rainproof but not watertight.
C ) The Three Phase NPR is shipped with its mounting brackets wrapped
and tied within the unit. After unboxing, open the door, remove the bag
that contains the four mounting brackets and their screws, and install
them into the screw inserts on the back of the enclosure.
1
PREPARATION, continued
E ) Decide how to connect the IQ Envoy to the Internet: Use the included
Enphase Mobile Connect modem, wi-fi, or Ethernet. If using Ethernet,
make sure you have the following items
•
Ethernet cable: 802.3, Cat5E or Cat6, unshielded twisted pair (UTP).
Do not use shielded twisted pair (STP) cable.
•
Ethernet requires that you install a ferrite bead (we recommend Fair-Rite
0431167281) as close as possible to the IQ Envoy on the Ethernet cable.
F ) Create a paper installation map to record device serial numbers and
positions in the array. You will scan this map later using Installer Toolkit
and your mobile device.
•
Write the IQ Envoy serial number on the paper installation map. Later,
you will need to enter this number in Installer Toolkit. You can type it in
manually or scan the label on the inside of the NPR door.
G ) Choose a mounting location that is structurally suited to bearing the
weight of the unit. The wall must include studs that can bear 29 kg (64
lbs) or can be of masonry or other suitable structure.
*
WARNING:
The Three Phase NPR weighs 29 kg (64 lbs) and may require
two persons to lift the unit.
