The 300kW dual-gun modular AC-DC fast charger targets public parking hubs and retail destinations, where uptime and quick service access decide revenue. With CCS2 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 Every cabinet is load tested before shipment and arrives with a wiring map covering contactors, fuses and surge arrestors for fast commissioning. Input power factor stays above 0.99 and the wide input window keeps operation stable on weak rural feeders and long industrial spurs. A single controller supervises rectification, isolation and metering, which keeps the power path short and trims conversion losses across the whole load range. Galvanic isolation between grid and vehicle protects both sides during fault events and meets the insulation requirements behind CE and IEC 61851 compliance. Power conversion is separated from control logic, so firmware updates and diagnostics never interrupt an active charging session. Matching power modules are documented in the datasheet.

2. 200V-1000V Wide Voltage Output With Constant Power Voltage and current limits are negotiated over the control pilot, then confirmed by the battery management system before the DC contactors close. Precision metering at the outlet delivers Class B accuracy, so billed energy matches what the vehicle actually receives. Cable assemblies rated 250A to 400A are matched to each outlet, and CCS2 leads are available in lengths from 4 to 8 metres. Constant power operation holds the full 300kW from roughly 500V upward, so an 800V pack charges at rated rate instead of tapering early. Continuous insulation monitoring isolates the outlet whenever leakage approaches the configured threshold, protecting technicians and vehicles alike.

3. 40kW Hot-Swap Power Modules and N+1 Redundancy Replacement modules ship pre-calibrated, and the controller recognises a new unit automatically once it is fully seated. N plus one redundancy keeps rated 300kW available even while one module is pulled for service, which matters on revenue-critical corridors. Module-level diagnostics flag degrading fans and capacitors long before they cause a stoppage, enabling condition-based maintenance. Each module reports voltage, current, temperature and fan speed to the controller, which derates or isolates any unit drifting out of tolerance. 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 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 400A session or two lower-current sessions. When a second connector activates, the controller splits output according to state of charge rather than a fixed schedule. Priority rules can reserve one outlet for emergency fleets while the other follows a normal queue, all configured remotely. Load balancing also watches site demand, trimming total draw when the transformer or building load approaches its limit. Session logs record delivered energy per outlet, which simplifies billing, reconciliation and fleet cost allocation. Site rules are tuned from the operator portal.

5. Outdoor IP55 Enclosure Built for Public Sites Each unit is ingress tested at the factory and ships with CE documentation covering insulation and earth continuity checks. Cable management hooks keep CCS2 leads off the ground, extending connector life in busy public car parks. The bonded anti-glare touchscreen stays readable in direct sunlight and remains responsive through gloved operation. Optional heating, ventilation and lighting kits extend operation to cold storage yards and dusty mining roads. The enclosure is rated IP55, with filtered intake louvres and a sealed electronics compartment that shrugs off rain, dust and washdown. Surge protection, residual current detection and emergency stop are integrated, and the cabinet is engineered for a ten-year outdoor service life. 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. An open API and Modbus TCP option let the DC fast charger link with solar, storage and building management systems. Drivers authenticate by RFID card, mobile app, QR code or ISO 15118 plug and charge, with an optional POS terminal for bank card payment. Multi-language interface, configurable tariff screens and branded start pages help operators monetise the charging session itself. 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

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 300kW unit support?

The charger delivers 200V to 1000V DC at up to 400A, so it serves 400V passenger cars and 800V heavy vehicles from the same outlet. Constant power holds 300kW 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 300kW, 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.

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.