Primarily used for communication in 400V low-voltage distributed photovoltaic power generation projects, the low-voltage photovoltaic grid connection cabinets are mainly composed of anti-islanding protection devices (with the option to add fault disconnection devices and online power quality monitoring devices), isolation switches, grid connection circuit breakers, surge protectors, temperature and humidity controllers, power metering devices, and cabinets.

Product Features

Protection Feature

The anti-islanding device features passive islanding detection, pressure-actuated automatic reclosing, over/under voltage protection, high/low frequency protection, and reverse power protection.

Automatic Grid Connection
The anti-islanding protection device features loss-of-voltage tripping (power failure in the grid) and automatic reclosing under pressure, tripping during abnormal voltage and automatically reconnecting to the grid when voltage returns to normal. It also comes with intelligent communication capabilities, enabling communication with the backend system, remote operation of circuit breakers, and remote viewing of various electrical parameters and switch positions in the grid cabinet.

Electrical Energy Meter
The PV grid-tied cabinet can be equipped with a metering chamber, which features a lead-sealed device to effectively prevent electricity theft. The metering chamber can accommodate a metering device and a negative control device (usually provided by the local power supply bureau), allowing for excellent recording of power generation.