How to determine the installation height of the combiner box

How to determine the installation height of the combiner box
1. Influencing factors
There are many factors that need to be considered for the installation height of the combiner box, including but not limited to the following:
1. Inverter input voltage range: In the inverter input voltage range, the line loss caused by the DC input voltage reduction should be considered first.
2. On-site environment: If the installation height is required on site, it is necessary to consider environmental factors such as wind, and select an appropriate bracket to stabilize the combiner box.
3. Transmission distance: The longer the transmission distance, the higher the installation height needs to be to reduce the loss of the line.
2. Calculation method
When determining the installation height of the combiner box, the following calculation methods can be applied according to the specific situation:
1. Calculate the rated cable cross-sectional area and line loss according to the input voltage range of the inverter and the transmission distance of the cable;
2. Consider and select appropriate brackets to stabilize the combiner box;
3. Determine the height of the combiner box, generally about 2-3 meters.
3. Relevant suggestions and precautions
1. When selecting the bracket, it should be considered according to the ground environment and climatic conditions to ensure that the combiner box can work stably for a long time;
2. On the basis of various norms and standards, the installation height of the combiner box should be determined, and it should be in line with the local power purchase policy;
3. When installing the combiner box, attention should be paid to the length of the cable and the loss of the line to minimize the problem of voltage drop.
To sum up, the installation height of the combiner box needs to be comprehensively considered according to the site environment, inverter input voltage range, transmission distance and other factors, and the general installation height is between 2-3 meters. During the installation process, it should be operated in strict accordance with the relevant norms and standards to ensure safe and stable power transmission.