Photovoltaic grid-connected distribution boxes and distribution cabinets, distribution boards, distribution screens, etc. are complete sets of equipment for centralized installation of switch integrated distribution box wiring guidance, instruments and other equipment.

A variety of self-resetting over- and under-voltage protectors and photovoltaic special reclosing circuit breakers are available to meet the use needs and acceptance standards of different regions; the box cover requires a professional key to open, realizing professional management;

Plastic spray box and stainless steel box are optional; outdoor installation, safer to use; support special requirements and function customization.

The metal distribution box has a higher protection level, and the commonly used protection levels are: IP30, IP44, IP54, IP55, IP65, explosion-proof.

Reasonable distribution of electrical energy, convenient for the opening and closing operation of the circuit.

It has a higher safety protection level and can intuitively display the conduction status of the circuit.

It is easy to manage and is conducive to maintenance when a circuit failure occurs.

Wall-mounted installation, embedded concealed installation, surface installation, floor installation (customizable)

Working principle diagram of YH photovoltaic grid-connected series distribution box and distribution cabinet

Photovoltaic grid-connected distribution box

Applicable to household and small industrial and commercial photovoltaic power generation systems to meet customized system customization needs.

Working voltage: AC230V, AC400V

Photovoltaic grid-connected cabinet is an important part of connecting string inverter and step-up transformer or AC junction box or step-up transformer. The incoming line of this photovoltaic grid-connected cabinet adopts circuit breaker input or direct input, the output adopts circuit breaker or load isolating switch, the busbar adopts electroplated or purified busbar connection, and provides secondary lightning protection. The rated voltage of the system is AC400v, the protection level is IP40 indoors and IP54 outdoors; the secondary measurement and control circuit, the current is greater than 2.5mm, the cable is greater than 1.5mm, the control is greater than 1.0mm, the measuring current transformer is 0.5-level current transformer, and the metering transformer is 0.2S-level current transformer. Related functions can also be added according to customer requirements. This product adopts professional electrical design and component selection to make the internal structure of the cabinet safe, simple, beautiful, convenient for on-site wiring and maintenance, and ensure long-term stable operation of the equipment.

Scope of application

Applicable to two types of photovoltaic power generation systems, village-level and large-scale industrial and commercial, to meet customized needs, working voltage AC400V, AC690V.

Can be fixed installation design or plug-in design:

Use well-known domestic and foreign brand circuit breakers and components to form functional units, with excellent technical performance, safe and reliable:

Can be composed of various standard unit modules for customers to assemble at will:

Use isolation between areas and mutual isolation between the incoming and outgoing lines of functional units to effectively enhance safety protection performance:

Combined assembly structure, all structural parts of the frame are firmly connected with screws, the frame, door and panel are electrostatically sprayed after phosphating, and all non-sprayed parts are galvanized and passivated.

It can meet the requirements of various components and can meet different working environments, and achieve the corresponding protection level:

The frame is made of high-quality steel plate, and the frame can be equipped with a 25m modulus

hole, which can be expanded for various purposes. There are two ways of entering the line: upper and lower side:

High breaking capacity, good dynamic thermal stability, flexible and practical electrical scheme combination, and the main parameters have reached the international advanced level.