The 400kW dual-gun modular AC-DC fast charger targets public parking hubs and retail destinations, where uptime and quick service access decide revenue. With CCS1 and NACS outlets, a 200V-1000V DC window and OCPP 1.6J connectivity, it delivers predictable high-power charging while keeping installation and commissioning simple. This DC fast charging station pairs high utilisation with low maintenance overhead.

1. Modular AC-DC Power Topology and Conversion Chain Busbar layout, magnetic components and cooling channels are shared across the 400kW family, which shortens lead times and simplifies spare part stocking. Power conversion is separated from control logic, so firmware updates and diagnostics never interrupt an active charging session. An active front end feeds isolated DC/DC stages inside each cabinet, so grid harmonics stay low while output voltage follows whatever the battery management system requests. Galvanic isolation between grid and vehicle protects both sides during fault events and meets the insulation requirements behind CE and IEC 61851 compliance. Bidirectional-ready bus design lets the same platform accept solar or battery energy storage input without a second conversion stage. Matching power modules are documented in the datasheet.

2. 200V-1000V Wide Voltage Output With Constant Power Continuous insulation monitoring isolates the outlet whenever leakage approaches the configured threshold, protecting technicians and vehicles alike. Constant power operation holds the full 400kW from roughly 500V upward, so an 800V pack charges at rated rate instead of tapering early. Pre-charge sequencing limits inrush current, shielding vehicle contactors and DC link capacitors from stress during every plug-in. Cable assemblies rated 250A to 400A are matched to each outlet, and CCS1 and NACS leads are available in lengths from 4 to 8 metres. Output spans 200V to 1000V DC, covering 400V and 800V vehicle architectures from compact city cars to heavy-duty tractors.

3. 40kW Hot-Swap Power Modules and N+1 Redundancy Each module reports voltage, current, temperature and fan speed to the controller, which derates or isolates any unit drifting out of tolerance. Speed-controlled fans and intelligent airflow keep acoustic noise near 65 dB, which suits residential, hospital and retail locations. Thermal design holds junction temperatures stable at 50 degrees ambient, so the DC fast charger sustains rated output in hot climates. Power is delivered by 40kW hot-swappable modules, so a failed unit is exchanged in minutes without isolating the whole cabinet. Replacement modules ship pre-calibrated, and the controller recognises a new unit automatically once it is fully seated. Compatible EV charging connectors are listed separately.

4. Dynamic Power Allocation Across Dual Outlets Scheduling profiles prioritise buses in the morning and light vehicles in the evening without manual intervention. Matrix switching allows any module to serve any gun, so one cabinet can run a single 500A session or two lower-current sessions. Priority rules can reserve one outlet for emergency fleets while the other follows a normal queue, all configured remotely. Operators set allocation rules per site, per connector or per tariff window through the cloud portal, with no on-site reprogramming. Because capacity follows demand, the DC fast charging station avoids the idle-outlet penalty that drags down utilisation on paired connectors. Site rules are tuned from the operator portal.

5. Outdoor IP55 Enclosure Built for Public Sites Surge protection, residual current detection and emergency stop are integrated, and the cabinet is engineered for a ten-year outdoor service life. Each unit is ingress tested at the factory and ships with CE documentation covering insulation and earth continuity checks. Ambient range runs from minus 30 to plus 55 degrees Celsius, with internal heaters protecting the 7-inch display in freezing conditions. Cable management hooks keep CCS1 and NACS leads off the ground, extending connector life in busy public car parks. Front and side service access is available, and the base frame accepts either anchor bolts or a concrete plinth. Installation drawings cover plinth and cable routing.

6. Smart Payment, OCPP Management and Energy Integration An open API and Modbus TCP option let the DC fast charger link with solar, storage and building management systems. OCPP 1.6J adds certificate handling and stronger message security for public networks that must satisfy national roaming rules. Every session produces a metered record covering start, stop and energy delivered, mapping directly to the operator’s billing engine. Remote diagnostics, firmware updates and tariff changes are pushed over the air, cutting truck rolls for routine maintenance. Local storage keeps sessions running if connectivity drops, then synchronises records once the link returns. Multi-language interface, configurable tariff screens and branded start pages help operators monetise the charging session itself. Backend integration follows the OCPP specification.

Deployment Support and Accessories

Projects usually pair the cabinet with Type 2 to Type 2 cables and a OCPP protocol controllers, all supplied from one factory. Engineering teams can review the company profile before order, while commercial questions go through the contact our team page. Standard builds ship in four to six weeks, and documentation covers wiring, grounding and network setup.

Frequently Asked Questions

What output voltage range does the 400kW unit support?

The charger delivers 200V to 1000V DC at up to 500A, so it serves 400V passenger cars and 800V heavy vehicles from the same outlet. Constant power holds 400kW from about 500V upward, which shortens charging time on modern high-voltage packs.

How does DCDC architecture differ from a conventional AC-DC charger?

A DCDC stage accepts a DC bus from solar or battery storage and converts it directly, skipping one rectification step. That raises round-trip efficiency and lets the modular AC-DC platform operate during grid outages when paired with a BESS cabinet.

Can the two guns charge at the same time at full power?

Yes, with dynamic allocation. Total capacity is shared, so one vehicle can take the full 400kW, or two vehicles can split it according to state of charge. Matrix switching means any module can serve either outlet, and rules are configured remotely.

Which OCPP version should an operator choose?

OCPP 1.6J covers the widest installed base of back offices today. OCPP 1.6J is specified here for certificate handling, plug and charge support and stronger message security. Both profiles work with standard roaming hubs, and the protocol controller datasheet explains the mapping.

What protection level is needed for roadside installation?

IP55 is the baseline for outdoor public sites, combined with surge arrestors, residual current detection and an emergency stop. Coastal or dusty locations should add the anti-corrosion coating and filter service kit.

How is maintenance handled when a power module fails?

Modules are hot-swappable from the front. A technician isolates the affected unit, slides it out and seats a pre-calibrated replacement while the second outlet keeps serving traffic. N plus one redundancy keeps rated output available throughout.

Does the station support solar and battery storage integration?

The DC bus is storage-ready. Solar MPPT or a BESS cabinet can feed the link directly, and the controller can cap grid import during peak tariffs. This suits microgrid and carport projects where demand charges dominate operating cost.

As a commercial DC fast charger, the platform is specified for operators who need predictable uptime from a DC fast charging station.

Fleet managers comparing a DC fast charging station against split systems value the single-cabinet service model of this DC fast charger.

The DC fast charging station ships with commissioning support, and every DC fast charger is backed by regional spares.

Choosing a DC fast charger with documented test reports keeps procurement audits simple for any commercial EV charger project.