Product Features
Suitable For Environment
Component Matching
Product Details
| 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 protection4. 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 |
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Product FAQ
What are the main functions of PV Grid-Connected Box-Three-Phase?
PV Grid-Connected Box-Three-Phase is mainly used in three-phase photovoltaic grid-connected systems. It collects the DC power of multiple photovoltaic modules and provides necessary protection functions, such as overvoltage protection, lightning protection, and circuit breaker protection. It is an important part of the system.
What are the input and output parameters of PV Grid-Connected Box-Three-Phase?
The input side can connect multiple photovoltaic strings. The typical input voltage range is 200-1000V, and the maximum input current of a single channel can reach 20A; the output side is connected to the inverter. The typical rated output voltage is 380V, and the rated output current depends on the specific model.
How to connect PV Grid-Connected Box to the inverter?
The output side of PV Grid-Connected Box is connected to the DC input terminal of the inverter through a dedicated photovoltaic cable. The cable diameter must meet the current transmission requirements and be well insulated and waterproof. The inverter side also needs to be equipped with a corresponding connector.
What are the requirements for the installation environment of the PV Grid-Connected Box?
It should be installed in a ventilated and dry place, avoiding direct sunlight and rain. The ambient temperature is usually required to be between -25 and +60℃. The mounting bracket must be securely fixed and kept at a certain distance from the building.
How is grounding protection achieved?
The box shell must be reliably grounded, and the grounding cable should use a yellow-green two-color wire. The internal metal parts such as the busbar, mounting rails, etc. must also be connected to the shell at the same potential.