Electrical terminals have many applications in photovoltaic systems, for example, as breaks, confluences, and wire connections. In the photovoltaic system, the terminal blocks must ensure absolute product safety. Therefore, all components including the components used in the photovoltaic device are additionally inspected. Through the above partial discharge detection, it is confirmed that the photovoltaic rail-mounted terminal blocks have a long operation at 1000V DC. Time security.

The detection of partial discharge is necessary because the photovoltaic modules are connected in series to generate a high DC voltage. High voltages and correspondingly higher electric field strengths can cause microscopic breakdown in the insulating material of the terminals used, which causes fatigue of the material and ultimately leads to breakdown of the insulating material. The photovoltaic terminals use DC and AC voltages for partial discharge detection and measure the potential difference between the two potentials and between the potential and the housing.

The role of the terminal block

The terminal block is used to facilitate the connection of the wire. In fact, it is a piece of metal that is sealed inside the insulating plastic. There are holes at both ends to insert the wire. There are screws for fastening or loosening, such as two wires, sometimes needed Connections, and sometimes need to be disconnected, can be connected by terminals, and can be disconnected at any time without having to solder or entangle them, which is convenient and quick.

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