DEYE SUN-25K-G02-LV (01) PDF Document

The following safety symbols are used to highlight potential risks and important information for the DEYE SUN-25K-G02-LV:

Warning: Indicates important safety instructions which, if not correctly followed, could result in serious injury or death.

Shock Hazard: Indicates important safety instructions which, if not correctly followed, could result in electric shock.

Safety Hint: Indicates important safety instructions which, if not correctly followed, could result in damage to or destruction of the inverter.

High Temperature Hazard: Indicates safety instructions regarding hot surfaces which, if not correctly followed, could result in burns.

Operational requirements for the DEYE SUN-25K-G02-LV include:

1. The inverter should be installed and maintained by a qualified person under local standard regulations.

2. You must disconnect the AC side first, then disconnect the DC side during installation and maintenance. After that, wait at least 5 minutes to avoid getting shocked as the inverter discharges remnant electricity.

3. The local temperature of the inverter may exceed 80 degrees Celsius while operating. Do not touch the case to avoid injury.

4. All electrical installation must be in accordance with local electrical standards and achieve permission from the local power company.

5. Appropriate anti-static measures should be taken.

6. Install the unit where children cannot touch it.

7. Prohibit grounding the positive and negative poles of the PV string as it will damage the inverter.

The DEYE SUN-25K-G02-LV features four indicators on the front panel display:

There are four buttons on the DEYE SUN-25K-G02-LV panel:

UP button: Used for page turning (up) and increasing parameters.

DOWN button: Used for page turning (down) and decreasing parameters.

ESC button: Used to exit or modify adjustable parameters.

ENTER button: Used to confirm selection or modify adjustable parameters.

To ensure proper operation of the DEYE SUN-25K-G02-LV, consider the following criteria:

1. Risk of fire: Do not install in areas containing highly flammable materials or gases or in potentially explosive atmospheres.

2. Ventilation: Do not install in small closed spaces where air cannot circulate freely. Blocked airflow can cause overheating.

3. Exposure: Avoid direct sunlight or rain. Exposure to direct sunlight increases the operational temperature and may cause output power limiting. Use a sunshade if the ambient air temperature exceeds 40 degrees Celsius.

4. Support: Install on a wall or strong structure capable of bearing the weight.

5. Orientation: Install vertically with a maximum incline of +/-15 degrees. Tiling beyond this can inhibit heat dissipation.

6. Clearance: If installing more than one inverter, leave at least a 500mm gap between each unit, and at least 500mm above and below.

Before connecting, ensure the PV array open circuit voltage is within 1000V of the inverter and that the polarity matches the DC+ and DC- symbols.

Follow these steps to assemble the DC connectors:

1. Strip off the DC wire about 7mm and disassemble the connector cap nut.

2. Crimp the metal terminals with crimping pliers to the wire.

3. Insert the contact pin into the top part of the connector and screw up the cap nut.

4. Finally, insert the DC connector into the positive and negative inputs of the inverter.

Note: For the DEYE SUN-25K-G02-LV specifically, the specifications from the general technical table indicate a rated output power of 25kW and a rated AC grid output current of 65.6A.

To start the inverter, follow these steps:

1. First, switch on the AC breaker.

2. Turn on the DC switch of the PV module. If the panel provides sufficient starting voltage and power, the inverter will start.

3. The inverter will check internal and grid parameters while the screen shows “self-checking”.

4. If parameters are within acceptable range, the inverter will generate energy and the NORMAL indicator light will turn on.

Follow these steps to shut down the inverter:

1. Switch off the AC breaker.

2. Wait for 30 seconds, then turn off the DC switch or disconnect the DC input connector.

3. The inverter will close the LCD and all LEDs within two minutes.

The DEYE SUN-25K-G02-LV has an optional external zero export function using a SUN limiter or energy meter. It collects counter-current power to control the output power of the inverter so that inverter power and load are offset, ensuring excess power is not fed back to the grid. The limiter has two modes:

Minimum mode: The limiter controls the power according to the phase with the lowest power to ensure no reverse current occurs in any phase.

Average mode: The limiter controls the output according to the average total power of the three-phase load, which may cause single phase backflow.

The DEYE SUN-25K-G02-LV does not need regular maintenance. However, debris or dust can affect the heat sink performance. Clean it with a soft brush. If the surface is very dirty, a wet cloth can be used to clean the LCD and LED lamp. Do not use solvents, abrasive materials, or corrosive materials for cleaning any parts of the inverter.