EV Charging in Facility Projects: Wallbox or Portable?

AC charging selection starts with the vehicle’s accepted power and available electrical infrastructure. Use this guide to choose between WCU-22 Wallbox and WCU-11 Portable against model documents and record the quoted configuration. r-tec EV charging portfolio

Decision sequence for an EV charger

1. Check the vehicle’s AC charging capacity and Type 2 connection. The unit’s maximum output does not guarantee the vehicle accepts that power.
2. Decide between a permanent charging point and portability between suitable supplies.
3. The dealer’s technical team verifies phases, supply and ordered plug/adapter variant. A single-phase input entry does not establish the three-phase maximum output.
4. Qualified electrical personnel design external residual-current protection, earthing and the installation. Device protections do not replace panel protection.
5. Establish point count, total load and management needs. Unverified OCPP, RFID or communication features are not assumed included.
6. Record model, options, supply and open confirmations; the dealer’s technical team completes installation and handover checks.

The fixed point: WCU-22 Wallbox

According to its manual, the WCU-22 is a fixed wall-mounted AC charger rated up to 22 kW at 400 V three-phase and 32 A. It has a Type 2 vehicle connection and IP54 enclosure. There is no internal residual-current protection; an external 30 mA RCD is required in the supply panel. How long a vehicle takes to charge depends on its onboard AC charger and battery state; 22 kW alone does not establish a full-charge time.

A fixed installation requires a site-specific design for the supply circuit, protection and mounting location.

The flexible answer: WCU-11 Portable

The WCU-11 is a portable AC unit. Its manual’s specification table lists up to 11 kW at 400 V three-phase input and 16 A output. It also lists 220 V single-phase input without stating a separate charging-power value. The vehicle side has a 5 m Type 2 cable. The manual does not confirm 3.7 kW from Schuko, a blue CEE plug or automatic socket-type recognition. Confirm the ordered plug or adapter variant and the intended supply point. There is no internal RCD; an external 30 mA device is required in the panel.

Managing multiple charging points

Plan the site’s electrical load and operating requirements separately when several points are proposed. The local manuals for these two products do not document OCPP support; the WCU-22 manual lists some communication methods as optional. If platform connectivity or remote management is required, obtain manufacturer confirmation for the exact model and ordered configuration.

WCU-22 Wallbox / WCU-11 Portable.

WCU-22 / WCU-11 decision table

Decision field	WCU-22 Wallbox	WCU-11 Portable
Use	Permanent point	Portable operation
Maximum AC rating	400 V three phase / 32 A / 22 kW	400 V three phase / 16 A / 11 kW
Vehicle connection	Type 2	5 m Type 2 cable
External protection	30 mA at panel; no built-in RCD	30 mA at panel; no built-in RCD
Management	Some communication is optional; verify the order	OCPP/platform support is not established

The output records vehicle AC capacity, point count, model, supply/adapter, external protection and included communication options. The dealer submits open features for manufacturer assessment. Alkur does not perform electrical site surveys or end-user installation.