The 420kW multi-gun DCDC solar-battery fast charger targets bus depots and logistics yards, where uptime and quick service access decide revenue. With CCS2 and CCS1 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. DCDC Solar-Battery Power Topology and Conversion Chain 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. The 420kW multi-gun unit is built around a DCDC solar-battery topology that rectifies three-phase AC input onto a regulated DC bus before power reaches the vehicle inlet. A single controller supervises rectification, isolation and metering, which keeps the power path short and trims conversion losses across the whole load range. Commissioning takes under an hour with the guided setup wizard. 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. Precision metering at the outlet delivers Class B accuracy, so billed energy matches what the vehicle actually receives. Voltage and current limits are negotiated over the control pilot, then confirmed by the battery management system before the DC contactors close. Output spans 200V to 1000V DC, covering 400V and 800V vehicle architectures from compact city cars to heavy-duty tractors. Cable assemblies rated 250A to 400A are matched to each outlet, and CCS2 and CCS1 leads are available in lengths from 4 to 8 metres.

3. 40kW Hot-Swap Power Modules and N+1 Redundancy A shared DC bus lets any module feed any outlet, removing the fixed pairing that limits conventional charging piles. Thermal design holds junction temperatures stable at 50 degrees ambient, so the DC fast charger sustains rated output in hot climates. Speed-controlled fans and intelligent airflow keep acoustic noise near 65 dB, which suits residential, hospital and retail locations. Modules slide out from the front, so service engineers never need rear clearance in tight parking layouts or wall-adjacent installations. Power is delivered by 40kW hot-swappable modules, so a failed unit is exchanged in minutes without isolating the whole cabinet. Compatible EV charging connectors are listed separately.

4. Dynamic Power Allocation Across Dual Outlets Session logs record delivered energy per outlet, which simplifies billing, reconciliation and fleet cost allocation. Dynamic power allocation distributes available capacity across outlets in real time, letting a single vehicle draw the full 420kW. Scheduling profiles prioritise buses in the morning and light vehicles in the evening without manual intervention. Load balancing also watches site demand, trimming total draw when the transformer or building load approaches its limit. Because capacity follows demand, the DC fast charging station avoids the idle-outlet penalty that drags down utilisation on paired connectors. Matrix switching allows any module to serve any gun, so one cabinet can run a single 500A session or two lower-current sessions. 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. Front and side service access is available, and the base frame accepts either anchor bolts or a concrete plinth. The bonded anti-glare touchscreen stays readable in direct sunlight and remains responsive through gloved operation. Cable management hooks keep CCS2 and CCS1 leads off the ground, extending connector life in busy public car parks. The enclosure is rated IP55, with filtered intake louvres and a sealed electronics compartment that shrugs off rain, dust and washdown. A powder-coated steel body with anti-corrosion treatment suits coastal, industrial and roadside installations. Installation drawings cover plinth and cable routing.

6. Smart Payment, OCPP Management and Energy Integration OCPP 1.6J adds certificate handling and stronger message security for public networks that must satisfy national roaming rules. The controller exposes smart charging profiles, so a central system can cap site load during peak tariff periods. Multi-language interface, configurable tariff screens and branded start pages help operators monetise the charging session itself. 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. Every session produces a metered record covering start, stop and energy delivered, mapping directly to the operator’s billing engine. 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

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.

What payment options are available for public drivers?

RFID card, mobile app, QR code, ISO 15118 plug and charge and an optional POS terminal for contactless bank cards. All methods write to the same metered session record, so reconciliation stays simple. Connector options are listed on our EV charging connector page.

What output voltage range does the 420kW 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 420kW 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 DCDC solar-battery 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 420kW, 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.

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.

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