.

This is our 51.2V 100Ah lithium battery (with battery connection wires and BMS communication wires), a 5.5kW inverter controller, a mains input wire, a 4-square photovoltaic wire (current: 5500 * 40 = 137.5A), an AC input circuit breaker (generally, choose within the range of 1.5 to 2 times the input current), a bypass switch with a maximum current of 40A, an output current of 21.8A, an AC output circuit breaker, a DC circuit breaker for photovoltaic input, a simulated load lamp holder, and photovoltaic panels.

Connection steps:

Now we will start to connect the entire system and explain each of the precautions during the connection process one by one.

First, remove the wiring cover of the inverter.

Introduce the interfaces...

AC IN: Mains input

AC OUT: Mains output

COM: WiFi stick interface - for remote monitoring and control

Type-B port for program upgrade

Dry contact, diesel generator communication port

BMS communication port

Input breaker: Mains input switch

Parallel operation port

According to the parameters on the right side of the machine

1. Connect the battery

Battery input: 40-60V. Then confirm that the battery voltage system range is 40-60V. Unscrew the screws and connect the wires according to the positive and negative poles marked on the battery.

Connect the corresponding positive and negative poles of the battery. During the connection process, make sure the battery is in the off state. (If it is in the on state, there will be a large current at the moment of connection, which may cause a spark. If there is no switch, it is recommended to connect a DC circuit breaker to avoid sparks.)

 2. Connect the mains power input - load output (circuit breaker: for protection)

L - live wire   N - neutral wire

Connect to photovoltaic (DC circuit breaker)

Maximum MPPT current: 27A or PV input current: 18A

The maximum input power for grid connection and electrical appliances, as well as photovoltaic (PV) systems, is 6000W. Therefore, the power of the connected PV panels should not exceed 6 kilowatts. The maximum current for parallel connection is 18A, and the current of the PV panels should not exceed 18A when connected in parallel. The maximum voltage is 500V, and the voltage when connected in series should not exceed 500V. The MPPT tracking range is 120-450V, and it is recommended to use a voltage between 250V and 360V for the highest MPPT efficiency.

Connect the BMS communication line: Upload the lithium battery data to the inverter.

Power-on sequence and precautions:

1. Open the battery - turn on the machine switch (wait for the indicator light to come on, indicating normal startup)

2. Connect to the mains power - mains power circuit breaker (mains power input is normal)

3. Connect the photovoltaic system

4. After everything is normal, turn on the output circuit breaker

5. After everything is normal, turn on the load

Now the entire system has been powered on successfully.

What will happen if some users connect the power supply in the wrong order? If the mains power is connected first - it will prioritize using the mains power for supply (when the mains power is connected first and the battery is not yet connected, it doesn't detect the battery and assumes you don't have one, so it remains in the mains power working state and the battery icon keeps flashing. You cannot connect the photovoltaic or mains power input first.)

Error status: When mains power is on - the battery keeps flashing. When mains power is off - the machine turns off. Then start the machine again following the correct steps (wait for normal startup). As long as the red light is not red, the machine is operating normally.

Several commonly used settings (configured based on the user's usage environment)

Screen key functions:

Esc: Back

Up: Up

D: Down

Enter: Confirm