Direct Answer
A wallbox is a fixed, wall-mounted AC charging station for electric vehicles. Before installation, the main power decision is usually between 7kW and 22kW, with 11kW as a three-phase middle option.nnAccording to YIYANG SHENDA product specifications -nnChoose the wallbox according to the site's electrical supply and the vehicle's AC charging capability. A 22kW wallbox is not automatically a better choice if the location does not have three-phase power or the vehicle cannot accept 22kW AC charging.
Key Takeaways
- 7kW wallbox - 230V single-phase supply, 32A nominal current. Suitable for many home and garage installations.
- 11kW wallbox - 400V three-phase supply, 16A nominal current. Useful where three-phase power is available but 22kW is not required.
- 22kW wallbox - 400V three-phase supply, 32A nominal current. Suitable for three-phase sites with enough electrical capacity.
- The YIYANG SHENDA wallbox range uses an IP65 enclosure. Temperature performance should be checked by model - certificate documents state -30°C to +50°C with output derating above 45°C, while the 11kW and 22kW specification sheets list -25°C
- Charging time depends on both the wallbox rating and the vehicle's onboard AC charger. A higher wallbox rating does not guarantee faster charging for a vehicle that accepts less power.
- Smart functions such as RFID, APP, Wi-Fi, Bluetooth, OCPP, DLB, MID, and PEN are model-specific and must be confirmed during selection.
- Always confirm the electrical supply and installation environment before choosing a wallbox model.
Buyer Checklist
- A wrong power choice can increase installation cost.
- Functions the site does not need can add unnecessary complexity.
- Missing functions can make management difficult for shared parking, fleets, or public projects.
- Local electrical rules, connection types, and installation scenarios should be confirmed before final selection.
Detailed Answer
A wallbox is more than a large plug. It is a Mode 3 AC charging station designed for fixed installation in a home, garage, residential community, hotel, office, fleet site, or public parking location.nnThe current YIYANG SHENDA wallbox range includes -nn| Wallbox range | Power | Typical supply | Nominal current |nn|---|---|---|---|nn| SD-E700 / E799 series | 7kW | 230V single-phase | 32A |nn| SD-E800 / E899 series | 11kW | 400V three-phase | 16A |nn| SD-E900 / E999 series | 22kW | 400V three-phase | 32A |nnThese are tethered Type 2 AC wallboxes, meaning the charging cable is attached to the unit and ends in a Type 2 connector.nnThe power choice matters before installation for three reasons -
Key Industry Insights
Choosing 7kW or 22kW before installation prevents costly changes later. If the electrical panel, meter, and supply cable do not match the wallbox rating, the project may need additional electrical work or a different model.nnThis decision matters for buyers because -nnYIYANG SHENDA technical guidance recommends that wallbox selection be based on the installation scenario, power capacity, user access, target market, and required functions such as RFID, APP, OCPP, DLB, or MID.
FAQ
What is the difference between a 7kW and a 22kW wallbox?
A 7kW wallbox uses a 230V single-phase supply and is rated at 32A. A 22kW wallbox uses a 400V three-phase supply and is rated at 32A. The key difference before installation is the electrical supply - a 22kW model generally needs three-phase power.
Does a 22kW wallbox always charge faster than a 7kW wallbox?
No. The wallbox may support 22kW AC output, but the vehicle's onboard charger determines how much AC power it can accept. If the vehicle only accepts 7kW or 11kW AC charging, a 22kW wallbox will not make it charge faster.
Can I install an 11kW wallbox when comparing 7kW and 22kW?
Yes. An 11kW wallbox is useful where three-phase power is available but the site or vehicle does not need 22kW. It is rated at 16A on a 400V three-phase supply.
What is a typical installation scenario for a YIYANG SHENDA wallbox project?
A common scenario in YIYANG SHENDA wallbox selection guidance is a residential community or company parking facility with a 400V three-phase supply. In this case, an 11kW or 22kW model with RFID access control and OCPP is often recommended so that charging can be managed for multiple users. For a single-family home with a 230V single-phase supply, the recommended starting point is a 7kW model, with functions selected according to how the charger will be used.
What functions should I check before installation?
Confirm whether the installation needs RFID access control, APP control, OCPP for backend or operator use, DLB for dynamic load balancing, MID metering, or PEN protection. These functions depend on the selected wallbox model and configuration.
Which wallbox should I choose for single-phase power?
A 7kW model is the direct option in the YIYANG SHENDA wallbox range for a 230V single-phase supply. The 11kW and 22kW models are three-phase configurations.
What is the most important step before buying a wallbox?
Confirm the electrical supply and the installation scenario first. Wallbox model selection should be based on the installation environment, power supply, protection requirements, and local electrical standards.