Huanghua Group Co., Ltd. 
DC Fast EV Charging Station
Product Overview
Huanghua Group’s DC Fast EV Charging Station series is engineered as the high-power backbone of commercial and public charging infrastructure, delivering 120kW–240kW output for fleet depots, highway service stations, municipal charging networks, and renewable energy integration sites. All units are type-tested and certified in accordance with IEC 61851-23 (DC charging), IEC 62196 (connector standards), and IEC 62752 (IC-CPD for portable charging), qualifying CNHK chargers for EU tenders, North American utility programs, and global EPC projects.
General Specifications
| Parameter | Specification |
| Product Family | Commercial DC Fast Charging Station / Public EV Charging Point |
| Rated Input Voltage | 3-Phase AC 400V (50/60Hz) |
| Output Voltage Range | DC 50V – 1000V |
| Maximum Output Current | 240A |
| Rated Power Options | 120kW / 160kW / 180kW / 240kW |
| Power Factor | ≥0.99 @ full load, nominal input |
| Efficiency | ≥96% |
| THDi | ≤5% @ half load and above |
| Standby Power Consumption | ≤12W |
| Current Unbalance Distribution | ≤±3% |
| Voltage Stabilization Precision | ≤±0.5% |
| Current Stabilization Precision | ≤±1% |
| Ripple Factor | ≤±1% |
| Protection Degree | IP54 (polyurethane sealed gasket, rain hood optional) |
| Operational Temperature | -30°C to +50°C |
| Relative Humidity | 5% – 95% (non-condensing) |
| Altitude | ≤2000m (customized for higher altitudes on request) |
| Enclosure Dimensions | 700(W) × 600(D) × 1900(H) mm |
| Weight | ~300kg |
| Enclosure Material | 2.0mm cold rolled steel (stainless steel 304/316 optional) |
| Surface Finish | Powder coated RAL7035 (custom RAL available) |
| Compliance | IEC 61851-1 / IEC 61851-23 · IEC 62196 · IEC 62752 · CE · ISO 9001 |
| Third-Party Cert. | TÜV Rheinland type test report available · CB scheme · UKCA (pending) |
Product Variants & Functional Units
1. Commercial DC Fast Charging Station (Flagship)
High-power public/commercial charging for turnaround-intensive applications.
Power Modules: 120kW / 160kW / 180kW / 240kW configurable
Connector Configuration: Single gun or dual gun (simultaneous charging supported)
Interface Standards: CCS2 (standard), CCS1 / CHAdeMO / GB/T (optional)
Payment Methods: RFID card / QR code / APP payment (OCPP 1.6 backend compatible)
Typical Pairing: 20kV/40.5kV transformer → LV switchgear → DC charging station
2. AC Wallbox (Residential / Light Commercial)
Lower-power AC charging for workplace and residential deployments.
Power Options: 7kW / 11kW / 22kW (single-phase or three-phase)
Interface: Type 2 (IEC 62196-2)
Features: OCPP 1.6, WiFi/4G, IP65, RFID optional
Installation: Wall-mounted or pedestal-mounted
3. Portable EV Charger (IEC 62752 Compliant)
Mode 2 mobile charging for emergency and temporary deployments.
Power Options: 3.5kW / 7kW
Current: 16A / 32A adjustable
Interface: Type 1 (J1772) / Type 2 / GB/T
Safety: Integrated IC-CPD (In-Cable Control and Protection Device) per IEC 62752
Application: Fleet backup, roadside assistance, temporary event charging
Charging Interface & Standard Matrix
| Standard | Scope | CNHK Compliance | Notes |
| IEC 61851-1 | General requirements for EV charging systems | ✓ Full compliance | Covers AC/DC system architecture |
| IEC 61851-21 | AC charging stations | ✓ Full compliance | Applies to AC Wallbox variants |
| IEC 61851-23 | DC charging stations | ✓ Full compliance | Core standard for 120–240kW DC units |
| IEC 62196-1 | General requirements for connectors | ✓ Full compliance | Base connector safety framework |
| IEC 62196-2 | Type 1 / Type 2 AC connectors | ✓ Full compliance | J1772 and Mennekes connectors |
| IEC 62196-3 | DC connectors (CCS1/CCS2, CHAdeMO) | ✓ Full compliance | High-power DC couplers |
| IEC 62752 | IC-CPD for Mode 2 portable charging | ✓ Full compliance | Built-in protection for portable units |
| OCPP 1.6 | Open Charge Point Protocol | ✓ Native support | Backend CMS integration ready |
Engineering Features
1 Power Module & Electrical Performance
High-frequency IGBT-based rectifier topology with active power factor correction
Wide output voltage range (50V–1000V) compatible with 400V and 800V EV platforms
Parallel module architecture for redundant operation and scalable power
Real-time monitoring of voltage, current, temperature, and insulation resistance
2 Human-Machine Interface
7-inch color capacitive touch screen (sunlight-readable, anti-glare)
Multi-language UI (English, German, French, Spanish, Chinese default)
Charging status indication: power-on / charging / fault / emergency stop
LED indicator bar for quick visual status check
3 Protection & Safety System
Residual Current Protection: Type A + DC 6mA RCCB (per IEC 62955)
Surge Protection: Type 2 SPD (IEC 61643 compliant)
Emergency Stop: Front-panel E-stop button, hard-wired cut-off
Line Protection: Fuse + AC contactor + dedicated charging control module
Environmental Protection: Anti-moisture, anti-mold, anti-salt spray coating (C5-M rated optional for coastal sites)
Insulation Monitoring: Continuous DC isolation detection during charging
4 Communication & Smart Management
OCPP 1.6 JSON over WebSocket (OCPP 2.0 upgrade path available)
Remote connectivity: 4G LTE / Ethernet / WiFi
Backend integration: CMS platforms, payment gateways, utility demand-response APIs
Real-time telemetry: energy dispensed, charging duration, fault codes, connector lock status
Over-the-air firmware updates via secure boot
5 Enclosure & Installation
Modular internal layout with DIN-rail mounted protection and metering components
Cable entry: top and bottom gland plates, separate conduits for power and communication
Segregated N+PE terminal rails for clean wiring termination
Lockable front door with three-point latch, vandal-resistant hinges
Optional: cable management arm, retractable cable reel, bollard-style mounting
6 Environmental Adaptability
Thermal management: natural convection (standard) or forced-air fan modules (thermostatically controlled)
Anti-condensation heater standard in IP54 enclosures
UV-resistant powder coating for outdoor installations
Operating altitude up to 2000m (derating curve provided for higher elevations)
Routine & Type Tests
Routine Tests (Per Unit)
Visual and dimensional inspection
Wiring continuity and terminal torque verification
Insulation resistance test (≥1 MΩ @ 1000V DC)
Earth continuity test (≤0.1Ω)
No-load function test of contactors, RCCB, and HMI
Communication link verification (4G/WiFi/OCPP heartbeat)
Leakage current measurement during simulated charging cycle
Type Tests
Temperature Rise Test: full-load cyclic test per IEC 61851-23, busbar joints and connector contacts monitored
Dielectric Test: power-frequency withstand (3.5kV AC / 5kV DC)
Short-Time Withstand Test: 65kA / 1s (derived from LV switchgear platform validation)
IP Verification: dust ingress and water jet test per IEC 60529
Mechanical Operation Test: 2000 insertion/extraction cycles of charging connector
EMC Test: conducted and radiated emissions per CISPR 11 / IEC 61851-21-2
Environmental Test: salt spray (IEC 60068-2-11), damp heat (IEC 60068-2-78)
TÜV Rheinland type test report available upon request
Applications
| Sector | Recommended Variant | Rationale |
| Highway Service Stations | 240kW DC Fast Charging Station, dual gun | High-power, simultaneous charging for turnaround traffic |
| Municipal Public Charging | 120kW / 180kW DC, CCS2 + CHAdeMO | Multi-standard support for diverse vehicle fleets |
| Commercial Fleet Depots | 160kW DC, OCPP 1.6 + backend integration | Centralized billing, depot management API compatibility |
| Shopping Mall / Parking Garages | 120kW DC + 22kW AC Wallbox hybrid | Mix of fast top-up and long-duration parking charging |
| Workplace Charging | 22kW AC Wallbox, Type 2 | Cost-effective daytime employee charging |
| Residential Communities | 7kW / 11kW AC Wallbox, IP65 | Compact footprint, quiet operation, smart scheduling |
| EV Dealerships | 120kW DC + Portable IEC 62752 units | Showroom demo plus mobile delivery charging |
| BESS / PV Renewable Sites | 240kW DC, 800V compatible | Direct-coupled storage-to-charging without grid export |
| Coastal / Marine Facilities | 120kW DC, stainless steel 316 + C5-M coating | Corrosion-resistant for salt-laden environments |