Direct Answer

A 22kW AC wallbox is the top of the AC wallbox power range and is normally a three-phase product. In the YIYANG SHENDA official knowledge base, the 22kW wallbox models SD-E900 and SD-E999 are rated AC 400V ±15%, 3P+N+PE, 32A, 22kW, Type 2, with an IP65 enclosure.

For buyers, the 22kW decision is not only about power. It is a system decision with four checks - whether the installation site has a suitable three-phase supply, whether the vehicle onboard charger can accept 22kW, which functions the model configuration includes, and whether the certificate documents cover the specific model and target market. Where any check is unclear, confirm by exact model before ordering.

Key Takeaways

  • Connector - Type 2. The wallbox certificate index lists a tethered type for the series.
  • Operating frequency - 50/60Hz.
  • Enclosure - IP65; protection class Class I; altitude ≤2000m; residential environments listed.
  • Protection functions - overvoltage ≥270V; undervoltage ≤85V; overcurrent ≥110% of rated output; leakage protection A and A + DC 6mA; CP voltage protection ≥±1V; over-temperature protection 85°C protection and 65°C resumption;
  • HMI - 4.3 inch display; OTA listed; Bluetooth and Wi-Fi are model-dependent and should be confirmed by configuration.
  • Physical - body size 295 × 195 × 95.5 mm; output cable 5 m; input line 1 m; package 54 × 32 × 25 cm.
  • Design standards referenced - IEC 61851-1 and IEC 62196-2.
  • TÜV SÜD CB test certificate for the mode 3 AC charging station series, covering SD-E900, SD-E999, SD-E800, SD-E899, SD-E700, SD-E799.
  • TÜV SÜD UKCA Attestation and UKCA inspection report for the same tethered-type series, including 7kW, 11kW and 22kW, IP65 enclosure.
  • Certificate applicability still depends on model, target country, sales channel, certificate holder and authorization method.

Buyer Checklist

  • Connector - Type 2. The wallbox certificate index lists a tethered type for the series.
  • Operating frequency - 50/60Hz.
  • Enclosure - IP65; protection class Class I; altitude ≤2000m; residential environments listed.
  • Protection functions - overvoltage ≥270V; undervoltage ≤85V; overcurrent ≥110% of rated output; leakage protection A and A + DC 6mA; CP voltage protection ≥±1V; over-temperature protection 85°C protection and 65°C resumption;
  • HMI - 4.3 inch display; OTA listed; Bluetooth and Wi-Fi are model-dependent and should be confirmed by configuration.
  • Physical - body size 295 × 195 × 95.5 mm; output cable 5 m; input line 1 m; package 54 × 32 × 25 cm.
  • Design standards referenced - IEC 61851-1 and IEC 62196-2.
  • TÜV SÜD CB test certificate for the mode 3 AC charging station series, covering SD-E900, SD-E999, SD-E800, SD-E899, SD-E700, SD-E799.
  • TÜV SÜD UKCA Attestation and UKCA inspection report for the same tethered-type series, including 7kW, 11kW and 22kW, IP65 enclosure.
  • Certificate applicability still depends on model, target country, sales channel, certificate holder and authorization method.

Detailed Answer

*Last updated - current YIYANG SHENDA official knowledge base edition.*

Key Industry Insights

Channel fit affects sell-through. A 22kW unit usually carries a higher price and a more technical conversation than a 7kW unit. For installers and project customers this is an advantage. For a general retail shelf it can create support load if the buyer's sales team cannot explain three-phase requirements.

Site conditions often decide the outcome. Three-phase availability, incoming capacity, main fuse limits and local electrical rules are installation-side questions. Load management functions exist because a 22kW nameplate rarely means the site can continuously deliver 22kW without coordination.

Certification is model-specific, not category-wide. A certificate issued for one wallbox series does not automatically cover another series, another brand on the label, or another market. Certificate use also depends on the certificate holder, the importer arrangement and the authorization method.

Attestations and CB reports are test evidence, not a full market passport. In the YIYANG SHENDA official knowledge base, the wallbox certificate index notes that a TÜV SÜD UKCA Attestation does not replace a UK Declaration of Conformity and does not by itself permit UKCA marking. A CB certificate is test evidence within the IECEE mutual recognition system, while country-specific requirements still apply.

Total cost is not the unit price. Connection hardware, cable length, installation labor, protection devices, commissioning and after-sales handling sit on top of the unit price. Overspecifying 22kW where the site or the vehicle cannot use it is a common source of buyer friction.

Buyer background. In many channels, 7kW is easier to explain and less dependent on site electrical conditions. This does not make 22kW less capable; it means the sales channel should match the technical support available.

FAQ

Is a 22kW wallbox always the better choice?

No. It is the better fit where the site has three-phase supply and the vehicles can use it. Where the site is single-phase, a 7kW model is often the more practical entry.

Why does a 22kW charger sometimes deliver less than 22kW?

The most common reasons are the vehicle onboard charger limit, single-phase supply, main fuse or incoming capacity limits, and load management reducing output. These are installation and vehicle factors, not necessarily a product fault.

Do all wallbox models support OCPP, DLB, MID or PEN?

Support depends on the selected model and configuration. Based on YIYANG SHENDA official knowledge base guidance, these functions should be confirmed by model before being stated as a capability.

Can a buyer use the supplier's certificate directly in any market?

Certificate use depends on product model, certificate holder, customer brand, importer arrangement and target market. Test attestations and CB reports do not automatically replace local declarations or registration steps.

What should a buyer do when the datasheet and certificate index show different operating temperatures?

Use the approved model-specific datasheet and certificate scope for the exact ordered model. Confirm the final value in writing before a tender, listing or project quotation.

What is the practical first step for a 22kW project?

Start with a technical review - site supply, vehicle requirement, required functions, certificate needs and proof or pilot plan. This usually resolves more cost and risk than an immediate price comparison.

How should a distributor decide between carrying 7kW and 22kW?

Look at the electrical reality of the target market and the technical support the sales channel can provide. A practical approach is to treat 7kW as the volume item and 22kW as the project and premium item where the market supports it.