PV Grid-connected Cabinet-Three-Phase

This photovoltaic power generation system AC grid-connected distribution cabinet is suitable for solar photovoltaic grid-connected power generation systems and is used for power conversion, distribution and control between photovoltaic inverters and step-up transformers or loads. Made of hot-dip galvanized steel plate or stainless steel, the cabinet structure is safe and reliable, with sufficient mechanical strength. The product has anti-islanding protection, pressure closing, voltage loss tripping, grid low voltage, grid overvoltage, input lightning protection, system overcurrent, grid Isolation and a series of protections.

Description

Features

It adopts floor-standing structure and can be installed indoors and outdoors. It has obvious breaking indication and the ability to break fault current, and has the functions of under-voltage tripping, under-voltage lockout, and voltage detection closing. Reserve the location for installing meters and support meters with 485 meter reading mode (meters are provided by the power metering department).

Product function

A photovoltaic (PV) grid-connected cabinet is a critical piece of equipment used for connecting either centralized inverters and step-up transformers or AC combiner boxes and step-up transformers. Its design incorporates various input and output methods: the input can be through a circuit breaker or direct input, while the output can be managed via a circuit breaker or a load isolation switch. The busbar connections use either plated or purified busbars, enhancing the overall reliability and safety. Additionally, this cabinet provides secondary lightning protection, ensuring safe operation even in thunderstorm conditions.

Customers can also request additional features based on their specific needs. The design of the PV grid-connected cabinet emphasizes professionalism and the selection of quality components, ensuring the internal safety, simplicity, and aesthetics of the cabinet. This not only facilitates onsite wiring and maintenance work but also ensures long-term stable operation of the equipment.

Application scenario 

  1. Solar Photovoltaic Power Generation: Solar photovoltaic power generation is a typical application where grid-connected cabinets are widely used. One or more photovoltaic arrays in a solar photovoltaic power system can be connected to the grid-connected cabinet, and when necessary, switched to the grid. This method can improve the utilization of energy and help reduce electricity costs.
  2. Wind Power Generation: Wind power systems convert wind energy into mechanical energy, which is then converted into electrical energy by a generator. Grid-connected cabinets can connect the electrical output from wind turbines to the grid and control their power matching with other generators.
  3. Gas Turbine Power Generation: Gas turbines are highly efficient generators with the advantage of quick response, suitable for emergency power sources and peak-load power supply. Grid-connected cabinets can connect the electricity generated by gas turbines to the grid and work in coordination with other generators.
Technical Parameter
Model MGF-BWG(Three-Phase)
Power 200KW~800KW
Number of grid connected output channels 1 String
Grid connection requirements Three phase grid connection
Grid connected voltage AC:380
Switch capacity 400A-1600A
Protection function
Short circuit protection Yes
Overload protection Yes
Lightning Protection Yes(Nominal current:ln:20KA,lmax:4 0KA,Up W4kV)
Isolation protection (visible breakpoint) Yes(Knife switch/manual isolation switch)
Overvoltage and undervoltage protection Yes
Automatic reclosing Yes
Grid connected switch
Universal circuit breaker (optional)
400A-1600A
1. When the power grid loses power or the bias voltage is greater than 20%, it will automatically trip (the delay trip time can be adjusted from 0 to 10 seconds);
2. When the power grid returns to normal, manually close it;
3. Phase loss protection
4. Undervoltage protection
Photovoltaic specialized reclosing circuit breaker (optional) 400A-800A 1. When the power grid loses power or the bias voltage is greater than 20%, it will automatically open (the operating handle will act);
2. When the power grid returns to normal, it will automatically close (the operating handle will act);
3. Manual operation and automatic operation can be switched;
4. Check for voltage closing
Plastic shell reclosing (optional)
400A-800A
1. When the power grid loses power or the bias voltage is greater than 20%, it will automatically trip (the delay trip time can be adjusted from 0 to 10 seconds);

2. When the power grid returns to normal, manually close it;

3. Phase loss protection

4. Undervoltage protection

Environmental suitability
Temperature and humidity Working temperature: -25 to+60 ° C Storage temperature: -40 to+70 ° C Humidity: 0-90% No frost; Non corrosive gas locations (if any, please specify)
Using altitude W3000M
Salt spray resistance Standard salt spray test for 336 hours
General parameters
Cabinet material Stainless steel, cold rolled sheet spray coating, stainless steel spray coating
Protection grade  IP42
Box type Double door with meter position (distribution compartment, metering compartment)
Installation method Floor type
Box size (length*width*height) 800*600*2200/On demand customization