Photovoltaic Grid-Connected Cabinet | Low Voltage Distribution Cabinet | Photovoltaic Grid-Connected Solutions

The photovoltaic grid connection cabinet, as the total output of a photovoltaic power station, exists within the photovoltaic distributed power station system. It serves as the distribution device connecting the photovoltaic power station and the grid, acting as a boundary between the photovoltaic generation system and the grid. For low-voltage grid connection cabinets, additional devices for measurement and protection can also be installed. The photovoltaic grid connection cabinet consists of components such as circuit breakers, isolating switches, measuring metering instruments, surge protectors, and the cabinet body. Through the combination of these components, the technical requirements of the photovoltaic grid connection system are met, ensuring the protection and monitoring of the photovoltaic system.

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Feature

The photovoltaic grid connection box is used for photovoltaic power stations built near user sites. The operating mode allows for self-consumption on the user side, with excess power fed into the grid, maximizing the protection of the system's safe operation, ensuring safe coordination between the inverter and the grid, and improving system reliability.

This product features a high protection level, long service life, and ease of installation and operation. Its functions include isolation protection, overload protection, short-circuit protection, surge grounding protection, over/under voltage protection and recovery reclosing, and power generation measurement.

Parameter

1. The grid connection cabinet must be equipped with an isolating switch that has a clear disconnection point and must be rated at level 4.
Isolating switches should be set between the power supply load and the grid-connected inverter, as well as between the public grid and the load. The isolating switch should have a clear disconnection point indication and zero-break function.

2. The main circuit breaker of the grid connection cabinet must be equipped with a photovoltaic undervoltage trip.
When the voltage at the grid connection exceeds the specified voltage deviation range, the photovoltaic system should stop supplying power to the grid. This requirement applies to any phase of a multi-phase system.

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