In general, charging stations for electric vehicles are installed with a capacity between 3.7 kW and 22 kW. Here are some guidelines regarding the charging speed and capacity of the charging station:

1. 3.7 kW (230V, 1-phase): This is the standard charging speed for a normal outlet (Schuko). It is usually used for slower charging, for example, overnight at home. The charging capacity is approximately 16 amperes.

2. 7.4 kW (230V, 1-phase): This is a faster charging speed available if you have an electric car with a 1-phase charger that supports this capacity. The charging capacity is approximately 32 amperes.

   
   

3. 11 kW (400V, 3-phase): This is a common charging speed for electric vehicles that support a 3-phase connection. The charging capacity is approximately 16 amperes per phase.

   
   

4. 22 kW (400V, 3-phase): This is a higher charging speed available if you have an electric vehicle with a 3-phase charger that supports this capacity. The charging capacity is approximately 32 amperes per phase.

   
   

   It is important to check which capacity your electric vehicle and your electrical connection support before purchasing a charging station. Additionally, it may also be necessary to adapt the electrical installation in your home or business premises to deliver the desired capacity. It is recommended to consult a professional installer to determine the right charging station and the required capacity based on your specific situation.