The 120kW dual-gun modular AC-DC 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. Modular AC-DC Power Topology and Conversion Chain 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 120kW dual-gun unit is built around a modular AC-DC topology that rectifies three-phase AC input onto a regulated DC bus before power reaches the vehicle inlet. Galvanic isolation between grid and vehicle protects both sides during fault events and meets the insulation requirements behind CE and IEC 61851 compliance. Busbar layout, magnetic components and cooling channels are shared across the 120kW family, which shortens lead times and simplifies spare part stocking. Matching power modules are documented in the datasheet.

2. 200V-1000V Wide Voltage Output With Constant Power Precision metering at the outlet delivers Class B accuracy, so billed energy matches what the vehicle actually receives. Continuous insulation monitoring isolates the outlet whenever leakage approaches the configured threshold, protecting technicians and vehicles alike. Wide range voltage tracking keeps efficiency above 95 percent even when a deeply depleted pack pulls close to the 250A current ceiling. Constant power operation holds the full 120kW from roughly 500V upward, so an 800V pack charges at rated rate instead of tapering early. Output spans 200V to 1000V DC, covering 400V and 800V vehicle architectures from compact city cars to heavy-duty tractors.

3. 30kW Hot-Swap Power Modules and N+1 Redundancy Speed-controlled fans and intelligent airflow keep acoustic noise near 65 dB, which suits residential, hospital and retail locations. Module-level diagnostics flag degrading fans and capacitors long before they cause a stoppage, enabling condition-based maintenance. N plus one redundancy keeps rated 120kW available even while one module is pulled for service, which matters on revenue-critical corridors. Power is delivered by 30kW hot-swappable modules, so a failed unit is exchanged in minutes without isolating the whole cabinet. Thermal design holds junction temperatures stable at 50 degrees ambient, so the DC fast charger sustains rated output in hot climates. Compatible EV charging connectors are listed separately.

4. Dynamic Power Allocation Across Dual Outlets Load balancing also watches site demand, trimming total draw when the transformer or building load approaches its limit. Scheduling profiles prioritise buses in the morning and light vehicles in the evening without manual intervention. Dynamic power allocation distributes available capacity across outlets in real time, letting a single vehicle draw the full 120kW. Operators set allocation rules per site, per connector or per tariff window through the cloud portal, with no on-site reprogramming. Session logs record delivered energy per outlet, which simplifies billing, reconciliation and fleet cost allocation. 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 The enclosure is rated IP55, with filtered intake louvres and a sealed electronics compartment that shrugs off rain, dust and washdown. The bonded anti-glare touchscreen stays readable in direct sunlight and remains responsive through gloved operation. A powder-coated steel body with anti-corrosion treatment suits coastal, industrial and roadside installations. Optional heating, ventilation and lighting kits extend operation to cold storage yards and dusty mining roads. Front and side service access is available, and the base frame accepts either anchor bolts or a concrete plinth. Cable management hooks keep CCS2 and CCS1 leads off the ground, extending connector life in busy public car parks. Installation drawings cover plinth and cable routing.

6. Smart Payment, OCPP Management and Energy Integration Every session produces a metered record covering start, stop and energy delivered, mapping directly to the operator’s billing engine. Drivers authenticate by RFID card, mobile app, QR code or ISO 15118 plug and charge, with an optional POS terminal for bank card payment. The controller exposes smart charging profiles, so a central system can cap site load during peak tariff periods. Remote diagnostics, firmware updates and tariff changes are pushed over the air, cutting truck rolls for routine maintenance. Multi-language interface, configurable tariff screens and branded start pages help operators monetise the charging session itself. Local storage keeps sessions running if connectivity drops, then synchronises records once the link returns. 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

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.

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 120kW unit support?

The charger delivers 200V to 1000V DC at up to 250A, so it serves 400V passenger cars and 800V heavy vehicles from the same outlet. Constant power holds 120kW 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.

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.