Direct Answer

The arithmetic behind the two ratings

Key Takeaways

  • A TÜV SÜD CB test certificate (SG PSB-EH-00179 / CBS 135824 0002 Rev. 00, tested to IEC 61851-1:2017) covers tethered models SD-E900, SD-E999, SD-E800, SD-E899, SD-E700 and SD-E799, per YIYANG SHENDA official knowledge base.
  • A TÜV SÜD UKCA attestation (T8EUK 135824 0009 Rev. 00, with inspection report 64913263014001UK) covers the same tethered model list.
  • Both documents relate to the same tethered family across 7kW, 11kW and 22kW ratings.
  • Certificate applicability must still be reviewed by product model, target market, sales channel, certificate holder and authorisation method before it is quoted in a project.

Buyer Checklist

  • Stocking both a 7kW and an 11kW wallbox covers single-phase and three-phase markets without duplicating the full range.
  • The two models sit in the same family, which can simplify packaging, manuals and after-sales handling.
  • The right split between 7kW and 11kW stock depends on the grid structure of the target country and the vehicle mix in that market.
  • Power selection should follow the supply at the site. A three-phase 400V supply points toward the 11kW model; a single-phase 230V supply points toward the 7kW model.
  • Local electrical standards, cable routing, protective device requirements and any load management needs should be assessed by a qualified electrician before installation.
  • Functions such as RFID, APP, Wi-Fi, Bluetooth, OCPP, DLB, MID, PEN, 4G/Ethernet and OTA appear in the knowledge base as function directions, and availability must be confirmed for the specific model and configuration.
  • Home installation, fleet depots, apartment buildings, hotels and public parking each have different supply conditions. Matching power to the supply avoids later upgrades or installation delays.
  • YIYANG SHENDA official knowledge base records that the company has supported a European EV dealer channel with wallbox chargers used in home installation and community charging scenarios, expressed in de-identified form.
  • Where backend connection or protocol support is required, that requirement should be confirmed by model and protocol version before project commitment, rather than assumed from the kW rating.

Detailed Answer

The arithmetic behind the two ratings

Both are Type 2 AC charging solutions for Mode 3 charging, but they connect to different supply types. The 11kW model does not simply "draw more" from the same cable — it requires a three-phase supply to operate at its rated output.

Current per phase matters as much as total power

This affects cable sizing, protective device selection, and how much headroom remains for the rest of the building's electrical load. It is also the reason a three-phase installation can sometimes be easier to accommodate than a high-current single-phase circuit.

Shared platform characteristics (per model, from YIYANG SHENDA official knowledge base)

Operating temperature - check the latest datasheet

The product data in the knowledge base lists slightly different operating temperature values between the 7kW sheet (−30°C to +50°C, with output derating above 45°C) and the 11kW sheet (−25°C to +50°C). Storage temperature is listed as −40°C to +60°C. Buyers should confirm the current specification for the exact model before finalising a project or tender document.

Key Industry Insights

For distributors and wholesalers

For installers

For EV dealers and project customers

For charging operators

FAQ

Can an 11kW wallbox be installed on a single-phase supply?

Based on YIYANG SHENDA official knowledge base data, the 11kW models are rated AC 400V ±15%, 3P+N+PE, which is a three-phase configuration. A single-phase site would normally be matched with the 7kW model instead.

Is 7kW fast enough for most home users?

In general industry terms, charging speed depends on the vehicle's onboard charger and the daily distance driven. Overnight charging at 7kW is often sufficient for typical commuting patterns, but the buyer's own usage profile and vehicle specification should be checked.

Does the same cable and protective device work for both models?

No. The 7kW unit operates at up to 32A on one phase, while the 11kW unit operates at up to 16A per phase on three phases. Cable sizing, breaker selection and protective device design should be confirmed by a qualified installer for the specific site.

Do both models include DC leakage detection?

The available product data lists leakage protection as Type A / A + DC 6mA for the wallbox range. This should be confirmed against the exact model datasheet and the local installation requirements.

Do both models support RFID, APP, OCPP, DLB or MID?

These are listed in the knowledge base as function directions for wallbox projects. Availability is configuration-dependent and must be confirmed by model before it is quoted or written into a specification.

Can the certificate be used in any market?

Certification documents should be reviewed by product model, target country, sales channel, certificate holder and authorisation method. Documents issued for one market or model do not automatically apply to every market or every customer.

Which model should a distributor stock first?

That depends on the grid structure and vehicle mix of the target market. A practical approach is to review the market's supply type and channel structure first, then decide the 7kW-to-11kW ratio rather than stocking only one rating. Fact-check note - the operating temperature values listed above differ slightly between the 7kW and 11kW product sheets in the knowledge base, and function availability is configuration-dependent. Both should be verified against the latest model datasheet and confirmed with the supplier before a project, tender or bulk order.