Power box for photovoltaic equipment

Abstract

The invention discloses a power box for photovoltaic equipment. The power box structurally comprises fixing pieces, a grounding terminal, a box body, a circuit breaker, a transformer, an inverter andthe like; a circuit breaker, a transformer and an inverter are installed in the box body; the bottom of the box body is provided with a grounding terminal; the fixing pieces are horizontally fixed tothe upper and lower ends of the side face of the box; the grounding terminal is composed of a power connection structure and a parallel conductive structure; the power connection structure is mountedat the bottom end in the box body; the bottom structure of the power connection structure penetrates through the bottom of the box body and is mechanically connected with the parallel conductive structure; the parallel conductive structure is located outside the box body; the grounding area of the whole grounding terminal is increased through the aluminum plate of the parallel conductive structure, and a current generated by thunder and lightning is rapidly guided into the ground, thereby avoiding the current overload of the grounding terminal. According to the invention, the connection relation between a power connection column and a conductive column is increased through a clamping ring and a sleeve ring, and the stability of current conduction is guaranteed.

Description

technical field [0001] The invention relates to the field of electric boxes, in particular to an electric box for photovoltaic equipment. Background technique [0002] Photovoltaic power generation is mainly composed of photovoltaic cell arrays, combiner boxes, low-voltage DC cabinets, inverter cabinets, AC low-voltage cabinets, and step-up transformers. When the high-voltage current flows through the combiner box, the combiner box is also a kind of power box. The ground terminal of the combiner box has a small contact area with the ground surface, and there are few branches. The current passing through a single circuit is too much, and arc currents are prone to occur and cause surrounding power. Device damage, short circuit. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the present invention is realized through the following technical solutions: a power box for photovoltaic equipment, the structure of which includes a fixed piece, a grou...

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Problems solved by technology

[0002] Photovoltaic power generation is mainly composed of photovoltaic cell arrays, combiner boxes, low-voltage DC cabinets, inverter cabinets, AC low-voltage cabinets, and step-up transformers. When the high-voltage current flows through the combiner box, the combiner box is also a kind of power box. The ground terminal of the combiner box has a small contact area with the ground surface, and there are few branches. The current passing through a single circuit is excessive, and arc currents are prone to cause surrounding power Device damage, short circuit

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