Hoymiles MI-300T Quick Installation Manual

1. Accessories

Item
A AC Bus Cable, 12/10 AWG Cable
B
C
D AC Connector Unlocking Tool
E Bus Connector Unlocking Tool
F
G
*Note: All accessories listed above are not included in the package, and need to be purchased separately. Please contact our sales representative
for pricing information. (M8 screws need to be prepared by installer-self.)

2. Installation Steps

Ensure the microinverter is installed in the required environment. (Refer to product user manual for more details.)

2.1 Pre-installation

A) Plan the cable length to make the bus cable aligned with each PV module.
B) Install the AC bus end cap:
- Use the bus connector unlocking tool to
unlock the port upper cover.
- Loosen the three screws with a screwdriver.
Untighten the cap as circled below, and
remove the extra cable.
- Screw the cap back into the port, and insert
the AC bus end cap.
- Plug the upper cover back to the bus
connector.

2.2 Installation Steps

Step 1. Attach Microinverter on Rail

A) Mark the approximate center of each panel on the frame.
B) Fix the screw on the rail.
C) Hang the microinverter on the screw (as
shown in the picture below), and tighten
the screw. The silver cover side of the
microinverter should be facing the panel.
*Note: Please install the microinverter at least 50 cm above the ground/roof for better communication with the Hoymiles DTU.
Region: Global AP040089 REV2.0 © 2020 Hoymiles Power Electronics Inc. All rights reserved.
MI-300T/350T/400T Guide Quick Installation Guide
Description
M8 × 25 Screws
DC Extension Cable, 1 m
AC Sub Cap
AC Bus End Cap, IP67
01