TSun MS400 Microinverter Installation Guide

TSun MS400 Microinverter

Product Information

The Microinverter is a device that converts direct current (DC) produced by solar panels into alternating current (AC) that can be used to power homes or businesses. It is a compact and efficient device that is easy to install and maintain. The Microinverter comes in two models, TSOL- MS400/MS350/MS300 and TSOL- MS800/MS700/MS600.

Product Usage Instructions

Before installation, make sure to comply with the following conditions:

• Choose a suitable installation position.
• Ensure that the label of the Microinverter is upside down.

Installation Steps:

Step 1: Make an installation map

• Take out the SN labels and installation map from the package.
• Paste the SN labels on the installation map as shown.
• Complete the information of the solar plant.

Step 2: Fix the Microinverter

• Using two pairs of screws and nuts, fix the Microinverter on the frame.

Step 3: Connect the AC cable of two Microinverters

• Every Microinverter could be connected to the other one by its AC cables.
• Plug the female AC connector of one Microinverter into a male AC connector of another Microinverter to form a continuous AC branch circuit.
• Use Nylon cable ties to fix the AC cables onto the frame.
• Use a Connector Protective Cap to make sure the unused AC connector is closed.

Step 4: Connect the AC end cable of each cable section

• Take out the AC connector from the package.
• Separate the AC connector.
• Get the AC cable through the shell of AC connector and connect the cable to the right port.
• If the Microinverter is connected to 230/400V three-phase WYE power grid, connect the live line to port L and connect the neutral line to port N, as the connection of a single-phase power grid.
• If the Microinverter is connected to a 127/220 V three-phase power grid, connect one live line to port L and connect another live line to port N.
• If the Microinverter is connected to a 120/240V split-phase power grid, connect two live lines to port L and port N.
• Reassemble the AC connector.
• Plug the AC connector into the Microinverter and connect the AC cable to the AC distribution box.

Step 5: Connect the DC cable

• Install the PV modules and connect the DC cable to the Microinverter.

Step 6: Start the System

• Turn on the main utility-grid AC circuit breaker.
• The system will start producing power after about a two-minute wait time.
• The LED will flash green and red at startup.

LED Status:

Microinverter Installation

When choosing the position of installation, comply with the following conditions:

• To avoid unwanted power derating due to an increase in the internal temperature of the inverter, do not expose it to direct sunlight.
• To avoid overheating, always make sure the flow of air around the inverter is not blocked.
• Do not install in places where gasses or flammable substances may be present.
• Avoid electromagnetic interference that can compromise the correct operation of electronic equipment.
• It’s recommended to install a microinverter on structures under-neath the photovoltaic modules so that they work in the shade.
• Use a mobile phone to check the Wi-Fi signal strength at the installation position. If the Wi-Fi signal is bad, try to install the microinverter at another position or move the Wi-Fi router.

Installation Steps

DANGER

• Only qualified personnel should install, troubleshoot, or replace TITAN micro inverters or the cable and accessories.
• Before installation, check the unit to ensure absence of any transport or handling damage, which could affect insulation integrity or safety clearances.
• Unauthorized removal of necessary protections, improper use, incorrect installation and operation may lead to serious safety and shock hazards or equipment damage.
• Be aware that installation of this equipment includes risk of electric shock.

Step 1. Make an installation map

CAUTION

• If there are more than one installation site, please make the installation map separately and give a clear description about the installation site.
• The row of the table corresponds the shorter side of PV module and the column of the table corresponds the longer side of PV module. The direction on the upper left corner means the actual installation orientation.

Take out the SN labels and installation map from the package. Paste the SN labels on the installation map as below and complete the information of the solar plant.

Step 2. Fix the microinverter.

• DANGER
  Do not install the equipment in adverse environmental conditions such as flammable, explosive, corrosive, extremely high or low temperature, and humid.

• WARNING
  Choose the installation location carefully and adhere to specified cooling requirements. Micro-inverter should be installed in a suitable position with good ventilation and no direct sunshine.

• CAUTION

  • There are no screws and nuts in the package.
  • The distance between every two micro-inverters should meet the length of the AC cables. The length of AC cables is shown as below:

Choose an installation position. Using two pairs of screws and nuts to fix the microinverter on the frame. Make sure that the label of the microinverter should be an upside.

Step 3. Connect the AC cable of two microinverters

WARNING
According to the max current of the AC cables, there is a max installation quantity for the micro-inverter in each cable section.

Every micro-inverter could be connected to the other one by its AC cables.

Plug the female AC connector of one microinverter into the male AC connector of another microinverter to form a continuous AC branch circuit.

Use Nylon cable ties to fix the AC cables onto the frame.

Use a Connector Protective Cap to make sure the unused AC connector is closed.

Step 4. Connect the AC end cable of each cable section

DANGER

• Do not install the AC junction box without first removing AC power from the system.
• To prevent electrical hazards, make sure the micro-inverter system is disconnected from the home distribution network and the AC breaker is open.

WARNING

• Ensure that all AC cables are correctly wired and that none of the wires are pinched or damaged.
• Use AWG 12 ( 4 mm²) cable for AC end cable.

CAUTION
The installation technician is responsible for selecting a kind of AC cable and connecting the micro-inverter system to the home distribution network correctly.

• The AC connectors may be provided by different suppliers. The port definitions are subject to actual objects.

Take out the AC connector from the package. Separate the AC connector as shown below.

Get the AC cable through the shell of the AC connecter and connect the cable to the right port.

The definition of the port is shown below:

If the microinverter is connected to a 120/240V split-phase power grid, connect two live lines to port L and port N.

If the microinverter is connected to a 230/400V three-phase WYE power grid, connect the live line to port L and connect the neutral line to port N, as the connection of a single-phase power grid.

If the microinverter is connected to a 127/220 V three-phase power grid, connect one live line to port L and connect another live line to port N.

Reassemble the AC connector as shown below.

Plug the AC connector into the microinverter and connect the AC cable to the AC distribution box.

Step 5. Connect the DC cable

• DANGER
  When the photovoltaic array is exposed to light, it supplies a DC voltage to the inverter.

• WARNING

  • Ensure that all DC cables are correctly wired and that none of the wires are pinched or damaged.
  • The DC conductors of this photovoltaic system are ungrounded and may be energized.
  • The maximum open circuit voltage of the PV module must not exceed the specified maximum input DC voltage of the TSOL microinverter.

• CAUTION

  • If the DC cable is too short for installation, use a DC Extension Cable to connect PV modules to the microinverter.
  • Use MC4 compatible DC connectors in the inverter side of the DC extension cable, or get the DC connectors from TSUN.
  • Contact PV module manufacturers for the requirements of DC connectors in the module side of the DC extension cable.

Install the PV modules and connect the DC cable to the microinverter.

Step 6. Start the System

• DANGER
  Only qualified personnel should connect this system to the utility grid.

• CAUTION
  Do not connect micro-inverters to the grid or energize the AC circuit(s) until you have completed all the installation procedures and have received prior approval from the electrical utility company.

While installation is all finished, turn on the main utility-grid AC circuit breaker. Your system will start producing power after about a two-minute wait time. The LED will flash green and red at startup. The definition of LED is shown below.

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