The MPPT 350W micro inverter is suitable for grid-connected solar systems.

Product Description: The GMI series 350W solar grid-connected microinverter is a high-quality, compact device that efficiently converts direct current (DC) to alternating current (AC) to power home and office appliances. This intelligent microinverter's AC output is synchronized with the grid, ensuring stable and efficient power transmission.

Product Information:

Category: Solar Grid-Connected Inverter

Model: GMI Series

Material: Aluminum Alloy

Product Dimensions: 23x7.5x3.5 cm

Packaging Dimensions: 25.3x9x4.6 cm

Net Weight: 0.54 kg (540 g)

Gross Weight: 0.56 kg (560 g)

Specifications: Maximum Output Power: 350W

Rated Output Power: 320W

DC Input: 18V-40V

AC Output Voltage: 240V

Frequency Range: 50/60Hz Auto

MPPT Range: 24V - 40V

Solar Panel Voltage: Vmp30-39V

Solar Panel Power: Maximum 350W

User Instructions:

(1) This device is a grid-connected micro-inverter and must be correctly connected to the power grid to operate normally. This device will also stop generating electricity when the power grid is interrupted.

Do not allow the photovoltaic panel voltage to exceed the inverter's maximum input voltage (Voc < 40V).

Do not allow the photovoltaic panel power to exceed the inverter's maximum input power.

The positive and negative terminals of the solar panel must not be reversed. Handle with care when extending the solar panel cable.

Please install the inverter in a well-ventilated, dry, and cool place, avoiding direct sunlight and rain. The inverter may generate heat during operation, which is normal. The inverter has over-temperature protection; if the temperature is too high, it will automatically reduce its output efficiency or stop working. It will restart after cooling.

We have upgraded the inverter's drive circuit for better protection. If the inverter reaches a certain temperature, it will lose half its power. When the temperature drops to a normal level, it will resume full power output. If it still cannot output full power, please disconnect and reconnect.

(2) Microinverter Repair: A common customer feedback issue is that the inverter may stop working due to a failed DC or AC fuse. To help you resolve this issue, we provide free replacement parts and instructional videos to guide you through the repair process.

If you have any questions or concerns after receiving the product, please contact us promptly. We are committed to providing excellent after-sales service.

(3) Voltage Reminder: Our 18-50V grid-connected microinverters require an 18V startup voltage, with an operating voltage range of 18V-39V (Vmp). Please note that the open-circuit voltage (Voc) of your solar panel should not exceed 40V.

It is not recommended to use 12V solar panels with Vmp of 18-20V and Voc of 20-24V, as insufficient sunlight may cause the operating voltage to drop below 18V, leading to unstable inverter operation or even damage. We recommend using solar panels with Vmp of 30-39V and Voc of 38-46V for optimal performance.

(4) LED Indicator Lights: A solid green light indicates the microinverter is generating electricity.

A flashing red light indicates the microinverter is in standby mode.

A solid red light indicates the following protection functions are enabled:

A. Islanding protection

B. Over-temperature protection

C. AC over/under voltage protection

D. DC over/under voltage protection

E. AC frequency over/under protection

F. Fault protection

(5) Installation Steps xBefore installing the microinverter, please confirm that the mains voltage at the common grid connection point matches the rated voltage on the microinverter label.

Step 1 - Install the microinverter onto the bracket.

a. Mark the location of the microinverter on the bracket, noting its position relative to the photovoltaic module junction box or other obstructions.

b. Using the hardware recommended by the module bracket supplier, install one microinverter at each marked location.

Step 2 - Connect the microinverter AC cable and AC bus cable in sequence (L - brown, N - blue, G - green and yellow). Do not exceed the maximum current of the AC busbar cable.

Step 3 - Connect the microinverter to the photovoltaic modules. Do not allow the open-circuit voltage (VOC) of the photovoltaic modules to exceed the maximum input voltage of the inverter.

Step 4 - Install the AC branch circuit junction box and connect the conductors of the AC busbar cable. Connect the AC branch circuit junction box to the grid connection point.

Step 5 - Carefully check that all microinverters, connectors, and cables are connected correctly and securely.

Step 6 - Open the AC circuit breaker on each microinverter AC branch circuit.

Step 7 - Open the main AC circuit breaker on the grid. Your system will start up.

What's in the box
1 x Inverter
1 x AC Power Cord
1 x User Manual