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Open Energy for All Single-phase Microinverter USER MANUAL MI-300T MI-350T MI-400T Region: North America V202105 hoymiles.com...
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PV module, consequently improving the flexibility and reliability of the system. About the Manual This manual contains important instructions for the MI-300T/MI-350T/MI-400T Microinverter and must be read in its entirety before installing or commissioning the equipment. For safety purposes, only a qualified technician who has received training or has demonstrated competence may install and maintain this microinverter under the guidance of this document.
Do not use the equipment if any anomalies are discovered while operating. Avoid temporary repairs. • All repairs should be carried out by using only qualified spare parts, which must be installed in accordance with their intended use and by a licensed contractor or authorized Hoymiles service representative. •...
“Daisy-Chain Single Unit Microinverter” with wide DC input operating voltage range (16 V–60 V) and low start-up voltage (22 V only). The Hoymiles Single Unit Microinverter MI-300T/MI-350T/MI-400T is a reliable solution for PV systems with an uneven number of panels, and offers high CEC weighted efficiency – 96.50% (peak efficiency 96.70%) in 2015.
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Refer to the DTU User Manual or DTU Quick Installation Guide, and Quick Installation Guide for S-Miles Cloud (Hoymiles Monitoring Platform) Online Registration to install the DTU and set up the monitoring system. Product information is subject to change without notice. (Download reference manuals at www.hoymiles.
Single-phase Microinverter User Manual 6. Troubleshooting The 3rd generation of this microinverter (SN:1022xxxxxxxx) can only work with the new Hoymiles DTU (DTU-Pro, DTU-Lite and DTU-W100/DTU-G100) with the following serial number. Model Serial Number 10F7xxxxxxxx DTU-Pro 10F8xxxxxxxx 10FAxxxxxxxx DTU-G100 10D2xxxxxxxx DTU-W100...
(3) Other Status • Alternating red and green flashing: Firmware is corrupted. *Note: All faults are reported to the DTU, refer to the local DTU app or S-Miles Cloud (Hoymiles Monitoring Platform) for more information. Insulation Resistance Detection There is a resistance sensor in the microinverter to measure the resistance between the outputs of PV module and the ground.
Avoid temporary repairs. All repairs should be carried out by using only genuine spare parts. If all microinverters connect to the DTU-Pro, the DTU can limit the output power imbalance of all microinverters between phases to below 3.68 kW if required. Please refer to the “Hoymiles Technical Note Limit Phase Balance” for more details.
Storage and Transportation Hoymiles packages and protects individual components by using suitable means to facilitate the transport and subsequent handling. Transportation of the equipment, especially by road, must be carried out by using means that are suitable for protecting the components (in particular, the electronic components) from violence, shocks, humidity, vibration, etc.
DC short-circuit current. The output DC power of the PV module is NOT recommended to exceed 1.35 times the output AC power of the microinverter. Refer to the “Hoymiles Warranty Terms & Conditions” for more information.
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AC BRANCH CABLE AC BRANCH CABLE BROWN - L BROWN - L BLUE - N BLUE - N UP TO 12 HM-400Ts PER UP TO 12 HM-400Ts PER YELLOW & GREEN - G YELLOW&GREEN - G AC BRANCH CIRCUIT AC BRANCH CIRCUIT GROUND GROUND PHASE-L1...
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UP TO 12 HM-400Ts PER UP TO 12 HM-400Ts PER AC BRANCH CABLE AC BRANCH CABLE AC BRANCH CIRCUIT AC BRANCH CIRCUIT BROWN - L BROWN - L BLUE - N BLUE - N YELLOW & GREEN - G YELLOW&GREEN - G PHASE-L1 PHASE-L1 AC DISTRIBUTION PANEL...
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AC BRANCH CABLE AC BRANCH CABLE BROWN - L BROWN - L UP TO 12 HM-400Ts PER BLUE - N UP TO 12 HM-400Ts PER BLUE - N AC BRANCH CIRCUIT AC BRANCH CIRCUIT YELLOW & GREEN - G YELLOW&GREEN - G GROUND GROUND PHASE-L1 &...
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UP TO 12 HM-400Ts PER UP TO 12 HM-400Ts PER AC BRANCH CABLE AC BRANCH CIRCUIT AC BRANCH CABLE AC BRANCH CIRCUIT BROWN - L BROWN - L BLUE - N BLUE - N YELLOW & GREEN - G YELLOW&GREEN - G PHASE-L1&L2 PHASE-L1 &...
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