Acrel EV Charging Integrated Solution

1. Solution Overview

2. Bill of System Components

2.1 EV Charging Terminals

      1.AEV300-AC007D-EU 7kW EU-standard AC Wall-mounted Charger

        Single-phase 230V input, Type 2 interface, IP54 protection. Supports RFID card and Plug & Charge. Ideal for private parking spaces, office buildings, underground parking garages of apartments and small commercial slow-charging scenarios.

      2.AEU160 All-in-one DC Fast Charger (Max. 160kW Dual Gun)

        3-phase 400V input, dual-gun configuration optional (CCS2+CCS2 / CCS2+GBT), IP55 outdoor protection with dynamic power allocation. Suitable for medium-sized charging stations and light logistics fleets.

      3.AEU320 All-in-one Ultra-fast DC Charger (Max. 320kW Dual Gun)

        High-power modular DC fast charger with peak 320kW output for single gun. Applicable to highway service stations, bus depots, large logistics parks and large-scale commercial charging hubs.

2.2 Supporting Metering Devices (MID certified for EU billing compliance)

      1.ADL200 Single-phase MID AC Energy Meter

        Matched with 7kW AC chargers for independent energy metering and consumption statistics of AC charging loops. DIN rail mounting with compact size and RS485 Modbus communication.

      2.DJSF1352-D Integrated DC MID Energy Meter

        Designed for AEU160 / AEU320 DC fast chargers to perform high-precision DC energy measurement. Built-in shunt for convenient integration inside DC chargers, enabling compliant billing of DC charging energy.

2.3 Safety Monitoring Equipment

2.4 Upper-layer System & Communication

• Local side: Meters and insulation monitoring devices connect to gateway via RS485;
• Cloud side: Chargers support native OCPP1.6J (upgradeable to OCPP 2.0.1);
• Optional accessories: AcrelEMS Charging Station Energy Management Platform, ACCU-500 Flexible Load Controller for dynamic load management, PV coordinated charging and transformer overload prevention.

3. Introduction to Subsystems

3.1 7kW EU-standard AC Charging System (AEV300-AC007D-EU + ADL200)

System Architecture

3.1.1 AEV300-AC007D-EU 7kW AC Charger Key Introduction

• Rated parameter: Single-phase 230V, rated output 7kW / 32A
• Certifications: CE, CB, compliant with IEC61851
• Activation modes: RFID card, ISO15118 Plug&Charge
• Communication: WiFi / 4G / Ethernet, standard OCPP1.6J
• Protection functions: Overvoltage, undervoltage, overcurrent, residual current, overtemperature and lightning surge protection

3.1.2 Value of Matched ADL200 Single-phase MID Energy Meter

1. MID certification validates measurement data legally, meeting compliance requirements for commercial charging billing in EU;
2. DIN rail installation inside distribution cabinet for independent energy measurement of single AC charger;
3. RS485 Modbus communication uploads data to gateway and energy platform to separate charging consumption for billing reconciliation;
4. Monitors voltage, current, power and energy, supporting early warning of loop overload.

3.1.3 Typical Application Scenarios

3.2 EU-standard DC Fast Charging System (AEU160 / AEU320 DC Charger + DJSF1352-D DC MID Meter + AIM-D500 Insulation Monitor)

System Architecture

Installation Note: AIM-D500 and DJSF1352-D are installed on the internal DC bus of DC chargers to monitor DC bus insulation status and charging energy in real time.

3.2.1 Brief Introduction to AEU160 / AEU320 All-in-one DC Fast Chargers

• AEU160: Max. 160kW total dual-gun output, voltage range 150~1000VDC with dynamic power distribution between two guns. Suitable for medium commercial charging stations and light logistics fleets.
• AEU320: Max. 320kW total dual-gun output, single gun supports peak 320kW ultra-fast charging, applicable for buses, heavy trucks and highway charging stations.
• Common features: IP55 outdoor cabinet, 7-inch industrial touch screen, EU CCS2 interface, OCPP protocol, emergency stop, cabinet door interlock and anti-collision protection.

3.2.2 DJSF1352-D Integrated DC MID Energy Meter

1. Integrated structure with built-in shunt, no extra shunt required for easy integration inside DC chargers;
2. MID-certified DC energy measurement to satisfy commercial charging billing regulations in Europe;
3. Measures DC voltage, DC current, forward & reverse energy, supports Modbus data upload;
4. Wide voltage coverage 150~1000VDC, fully matching voltage range of EV traction batteries.

3.2.3 AIM-D500 DC Insulation Monitoring Device (Core Safety Component)

• Standard: IEC 61557-8, complying with EU mandatory requirements for insulation monitoring of DC power supply systems;
• Function: Continuously monitors insulation resistance between DC positive/negative poles and earth. Outputs alarm signals once insulation failure occurs, and can interlock charger control system to cut off power output;
• Application: Mandatory for all DC fast charging systems to prevent electric shock and fire risks caused by DC leakage;
• Communication: RS485 uploads insulation resistance value and fault alarms to platform, enabling remote monitoring of DC system safety status.

4. Core Functions of the Solution

4.1 Graded Compliant Energy Metering

• AC slow-charging loop: Independent metering via ADL200 single-phase MID energy meter;
• DC fast-charging loop: Energy metering via DJSF1352-D integrated DC MID energy meter.

All metering instruments hold MID certification, charging billing data is legally effective and meets supervision requirements of commercial charging stations in Europe and Latin America.

4.2 Insulation Safety Protection for DC System

4.3 Diversified Charging Management

4.4 Dynamic Load Management (DLM)

4.5 PV & EV Charger Coordinated Operation

4.6 Integrated Remote Operation & Maintenance

5. Scenario Selection Guide

6. Competitive Advantages

      1.Complete Integrated Electrical Solution

        Different from suppliers selling chargers only, Acrel provides one-stop supply of EV chargers, MID-certified metering instruments, IEC-standard insulation monitoring devices and energy management platform, reducing coordination costs with multiple vendors.

      2.Full-chain Certified Products

        Chargers hold CE/CB certificates; AC & DC meters obtain MID certification; AIM-D500 complies with IEC61557-8. Products meet European standards and satisfy customs and third-party acceptance requirements for Latin American projects.

      3.Adaptable to High-temperature & Rainy Outdoor Conditions

        EV chargers adopt IP54/IP55 high protection rating with wide-temperature design, suitable for tropical climate in South America.

      4.Native Support for Load Coordination & PV Integration

        The system can interconnect with campus PV systems and power distribution monitoring systems to realize load management and anti-reflux control, which is highly suitable for industrial clients and large park projects.

      5.Standardized Technical Documentation

        English manuals, wiring drawings and commissioning guidelines are available to support independent construction and commissioning by overseas engineering teams.

7. Brief Description of System Topology

1. AC charging branch: Mains power → ADL200 energy meter → 7kW AC charger → EV
2. DC charging branch: 3-phase AC input feeds power modules inside DC charger. The output DC bus connects to AIM-D500 insulation monitoring device and DJSF1352-D DC energy meter sequentially, finally connected to CCS2 charging gun.
3. All meters and insulation monitoring devices connect to IoT gateway via RS485;
4. Gateway collects local data, forwards OCPP data from chargers simultaneously and uploads information to AcrelEMS platform or client-owned charging operation platform.

8. Optional Extended Supporting Products

1. BR Rogowski Coil / ADW Series Multifunction Meters: Main incoming load monitoring of power distribution rooms to support dynamic load management;
2. ACCU-500 Flexible Load Controller: Synchronized power scheduling for multiple chargers;
3. AcrelEMS Energy Management Platform: Charging station energy statistics, PUE analysis, revenue reports and load early warning;
4. PV metering meters and anti-reflux devices: Supporting equipment for PV-EV charging integrated solutions.

9. Contact Us for Technical Support