Photovoltaic Grid-connected Cabinet

1. Protection functions: The equipment is equipped with overvoltage (trip), undervoltage (trip), over-frequency (trip), under-frequency (trip), frequency variation (trip), reverse power (trip), external interlock 1 (trip), external interlock 2 (trip), system power loss (trip), frequency variation lockout low frequency (trip), automatic closing with voltage (trip), and simulated trip (trip) and other photovoltaic grid-connected anti-islanding protection functions.

2. Lightning protection function: The photovoltaic grid-connected cabinet is equipped with a 3+1 lightning arrester, which can effectively prevent damage from natural disasters such as lightning strikes.

3. Automatic intelligent grid connection function: The anti-islanding protection device of the grid-connected cabinet and the grid connection switch work together, featuring undervoltage trip and voltage detection closing functions. They will trip when there is an abnormality on either the photovoltaic power station side or the grid side, and automatically restore grid connection when everything returns to normal without manual intervention. It can also communicate with the monitoring system to remotely operate the opening and closing of the grid connection switch.

4. Electricity metering function: The distributed photovoltaic grid-connected cabinet can be equipped with an electricity meter and metering device as per user requirements, which can accurately record the generated and delivered electricity and other related information.