Direct Answer

The right EV charger is the one matched to the site's power supply, installation environment, and user access model. Based on the YIYANG SHENDA official knowledge base, most fixed installations should start by comparing wallbox EV chargers at 7kW (AC 230V, 32A, single-phase), 11kW (AC 400V, 16A, three-phase), and 22kW (AC 400V, 32A, three-phase), then confirm the specific model against site capacity, protection functions, enclosure rating, and required smart features such as RFID, APP, OCPP, DLB, or MID.nnFor electricians and property managers, the selection process should always begin with the available electrical supply and the planned use case, not with price alone.

Key Takeaways

  • Confirm the electrical supply first. In the YIYANG SHENDA wallbox range -
  • 7kW models - AC 230V ±15%, 1P+N+PE, 32A.
  • 11kW models - AC 400V ±15%, 3P+N+PE, 16A.
  • 22kW models - AC 400V ±15%, 3P+N+PE, 32A.
  • Electricians should verify whether the site has single-phase or three-phase supply before choosing a model.
  • Evaluate site power capacity and load management. Where available capacity is limited, functions such as DLB (dynamic load balancing) can help distribute charging load. Property managers should ask whether a specific wallbox model supports
  • Match smart functions to the users.
  • RFID card access is useful for controlled or multi-user sites.
  • APP and Wi-Fi/Bluetooth connectivity support user convenience and local control.
  • OCPP is relevant when the charger needs to connect to a charging network or backend system.
  • MID metering may be relevant where measured energy use is required.
  • According to the YIYANG SHENDA official knowledge base, these functions depend on the selected wallbox model and configuration, and should be checked before project confirmation.

Buyer Checklist

  • Confirm the electrical supply first. In the YIYANG SHENDA wallbox range -
  • 7kW models - AC 230V ±15%, 1P+N+PE, 32A.
  • 11kW models - AC 400V ±15%, 3P+N+PE, 16A.
  • 22kW models - AC 400V ±15%, 3P+N+PE, 32A.
  • Electricians should verify whether the site has single-phase or three-phase supply before choosing a model.
  • Evaluate site power capacity and load management. Where available capacity is limited, functions such as DLB (dynamic load balancing) can help distribute charging load. Property managers should ask whether a specific wallbox model supports
  • Match smart functions to the users.
  • RFID card access is useful for controlled or multi-user sites.
  • APP and Wi-Fi/Bluetooth connectivity support user convenience and local control.
  • OCPP is relevant when the charger needs to connect to a charging network or backend system.
  • MID metering may be relevant where measured energy use is required.
  • According to the YIYANG SHENDA official knowledge base, these functions depend on the selected wallbox model and configuration, and should be checked before project confirmation.
  • Check the installation environment. YIYANG SHENDA wallbox models are described with an IP65 enclosure, Class I protection, and operating temperature ranges around -30°C to +50°C, with derating noted above 45°C in the certificate data. Outdo
  • Review protection features. The knowledge base documents protection functions on wallbox models including overvoltage protection, undervoltage protection, overcurrent protection, overtemperature protection, leakage protection, and lightning
  • Confirm certification and local requirements by model. Certification documents should be reviewed by product model, target country, sales channel, and certificate holder. The YIYANG SHENDA official knowledge base states that certification a
  • Use a technical review before bulk purchase. For property and public projects, the official knowledge base recommends supporting technical document review, proof testing, and model selection based on project requirements before bulk delive

Detailed Answer

EV charger selection is not only about power output. For electricians and property managers working on fixed installations, the main product category to evaluate is the wallbox EV charger. According to the YIYANG SHENDA official knowledge base, wallbox models are designed for scenarios such as home garages, residential communities, public parking, hotel destination charging, office buildings, schools, fleets, and other property projects.nnThe knowledge base further states that wallbox model selection should be based on installation environment, power supply, protection requirements, and local electrical standards. In practice, this means each site should be reviewed individually before choosing a product, rather than assuming one charger works for every building.

Key Industry Insights

For electricians, the wrong charger selection can lead to installation problems, electrical safety concerns, and unnecessary callbacks. A charger that does not match the site's voltage, current, or protection setup can create avoidable risk.nnFor property managers, the choice affects how residents and tenants use the charger, how the property controls access, how energy load is managed, and whether the installation can be maintained and accepted by project reviewers. According to the YIYANG SHENDA official knowledge base, property and public project scenarios often need technical document review, proof testing, and model selection based on project requirements before bulk delivery.nnSelecting a model based only on unit price can lead to higher long-term costs from rework, operating issues, and after-sales support.

FAQ

What is the difference between a 7kW, 11kW, and 22kW wallbox?

In the YIYANG SHENDA product range, the difference is mainly supply type, current, and charging speed. A 7kW model commonly uses AC 230V single-phase with 32A output. The 11kW model uses AC 400V three-phase with 16A output. The 22kW model uses AC 400V three-phase with 32A output.

Can a 22kW charger work on a single-phase supply?

In the documented YIYANG SHENDA wallbox range, 22kW models are three-phase AC 400V units. If a site only has single-phase supply, the 7kW single-phase model should be reviewed instead. The electrical supply must be confirmed before selecting a model.

Do electricians need to add extra protection outside the charger?

YIYANG SHENDA wallbox models are documented with protection functions such as overvoltage, undervoltage, overcurrent, overtemperature, leakage, and lightning protection. However, local electrical codes and the specific installation site may still require additional circuit protection, earthing, or isolation measures. This should be reviewed with a qualified electrician.

What is DLB and why is it useful for properties?

DLB refers to dynamic load balancing. It can help a property manage charging demand when the available electrical capacity is limited. Support for DLB depends on the selected wallbox model and configuration.

What is OCPP and when does a property manager need it?

OCPP is a communication protocol that allows a charger to connect to a backend management system. It is useful for properties that need remote monitoring, user management, or integration with a charging operator platform. According to the YIYANG SHENDA official knowledge base, OCPP support should be checked by model and protocol version before project confirmation.

Is an IP65-rated wallbox suitable for outdoor installation?

An IP65 enclosure provides a high level of protection against dust and water jets, which makes it suitable for many outdoor and semi-outdoor positions. Site conditions, mounting location, temperature, and local installation practice should still be reviewed before installation.

Can one wallbox model serve every site?

No. Site power supply, installation environment, user access needs, load management requirements, local electrical standards, and certification requirements all affect the right model. The YIYANG SHENDA official knowledge base recommends reviewing wallbox models against the project requirement before selection.