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AcuDC 300 product images.
Front view of the AcuDC 300 EV charging meter.
Front-right angled view of the AcuDC 300 EV charging meter.
Bottom view of the AcuDC 300 EV charging meter.
Side view of the AcuDC 300 EV charging meter.
UL Recognized
M25
CE Mark

EV Charging Meter

Revenue-grade metering and billing for EV fast charging stations, the AcuDC 300 EV charging meter has a rated accuracy of 0.2% for ±650A and 0.1% for 60-1000V. The DC meter is MID and UL Recognized certified and is compliant with the IEC 62053-41:2021 Class 0.5, EN50470-4 Class C standards, and OCMF format, making it an ideal choice for billing applications where revenue-grade accuracy is required. AcuDC 300 also features cable loss compensation, built-in data logging with non-volatile memory, as well as electronic metrology seal, ensuring precise measurement and secure data for EV charging facilities.

  • MID and UL Recognized certification for measuring instruments in international markets.
  • IEC 62053-41:2021 Class 0.5, EN50470-4 Class C complaint, with bidirectional energy measurement.
  • 0.1% accuracy from 60V to 1000V for DC fast charging stations.
  • 0.2% accuracy from -650A to 650A for revenue-grade billing.
  • OCMF format with signed data readouts.
  • Cable loss compensation for billing accuracy, no overcharged.
  • Two-tier anti-tampering metrology seal.
  • DC electrical measurements: voltage, current, energy, power, charge, and demand.
  • Direct voltage measurement & bidirectional current/energy measurement.
  • Three data loggers and 1 trend logger stored on internal non-volatile memory.
  • Modbus RTU over RS485 and Modbus TCP/IP using Ethernet for data query and configuration .
  • Real-time data query and configuration from HMI display.

AcuDC 300 Overview

What is an EV Charging Meter?

An EV charging meter is a measuring device integrated into an EV charger and serves an important function to measure and calculate the electric power, or kWh, consumed by the electric vehicle. To ensures accurate, revenue-grade billing, the meter must comply with regional regulatory frameworks such as the Measurement Instrument Directive from the European Union with a rated accuracy of IEC 62053-41:2021 Class 0.5 and EN50470-4 Class C to be complaint.

Front-right angled view of the AcuDC 300 EV charging meter.

AcuDC 300 Main Features

Illustration of the AcuDC 300 EV charging meter highlighting its revenue-grade accuracy for DC fast charging applications.

DC FAST CHARGING

Supporting a wide voltage measurement range between 0 to 1000V, the AcuDC 300 delivers on 0.1% revenue-grade accuracy for electric charging billing applications between 60V to 1000V. Ideal for dedicated EV fast charging station infrastructures.

Illustration of the AcuDC 300 EV charging meter highlighting its compliance with MID certification.

MID CERTIFICATION

AcuDC 300 is MID certified for regulatory compliance within the international markets. In compliance with IEC 62053-41:2021 Class 0.5 and EN50470-4 Class C, the EV charging meter meets or exceeds rigorous accuracy, environmental, and safety testing requirements in accordance to the MID framework. It provides a reliable performance standard, ideal for revenue-grade billing applications.

Illustration of the AcuDC 300 EV charging meter highlighting its cable loss compensation feature.

CABLE LOSS COMPENSATION

AcuDC 300 features cable loss compensation to achieve accurate billing data. The material, length, and width of the charging cable can result in energy loss during the EV charging process. Energy received by the EV may be lower than the amount delivered from the charger due to its natural resistance from the cable. Cable loss compensation factors the power loss and voltage drop caused by the resistance to ensure customers are only charged for the energy received.

Illustration of the AcuDC 300 EV charging meter highlighting its support for OCMF data format.

OCMF DATA FORMAT

OCMF (Open Charge Metering Format) is a widely used data format developed for exchanging data between EV charging infrastructures and billing systems, promoting transparency and interoperability across the industry. AcuDC 300 supports the OCMF format to ensure standardized communication between devices.

Illustration of the AcuDC 300 EV charging meter highlighting its electronic metrology seal.

ELECTRONIC METROLOGY SEAL

AcuDC 300 features a two-tier metrology security system to ensure data integrity. An electronic seal which can be enabled and disabled by toggling the switch on the meter. Certain settings are locked and cannot be modified when the seal is on. The seal switch is enclosed under a protective front casing and secured with two seal tabs. Anti-tampering seals can be used to prevent unauthorized tampering.

Illustration of the AcuDC 300 EV charging meter highlighting its built-in data logging feature.

BUILT-IN DATA LOGGING

The AcuDC 300 includes 3 data loggers and 1 trend logger, and each can be programmed independently to record different real-time metering data and energy usage parameters. The logs are timestamped and stored in a non-volatile memory for data analysis.

AcuDC 300 - DC Fast Charging Icon.
DC Fast Charging
Illustration of the AcuDC 300 EV charging meter highlighting its revenue-grade accuracy for DC fast charging applications.

DC FAST CHARGING

Supporting a wide voltage measurement range between 0 to 1000V, the AcuDC 300 delivers on 0.1% revenue-grade accuracy for electric charging billing applications between 60V to 1000V. Ideal for dedicated EV fast charging station infrastructures.

AcuDC 300 - MID Certification Icon.
MID Certification
Illustration of the AcuDC 300 EV charging meter highlighting its compliance with MID certification.

MID CERTIFICATION

AcuDC 300 is MID certified for regulatory compliance within the international markets. In compliance with IEC 62053-41:2021 Class 0.5 and EN50470-4 Class C, the EV charging meter meets or exceeds rigorous accuracy, environmental, and safety testing requirements in accordance to the MID framework. It provides a reliable performance standard, ideal for revenue-grade billing applications.

AcuDC 300 - Cable Loss Compensation Icon.
Cable Loss Compensation
Illustration of the AcuDC 300 EV charging meter highlighting its cable loss compensation feature.

CABLE LOSS COMPENSATION

AcuDC 300 features cable loss compensation to achieve accurate billing data. The material, length, and width of the charging cable can result in energy loss during the EV charging process. Energy received by the EV may be lower than the amount delivered from the charger due to its natural resistance from the cable. Cable loss compensation factors the power loss and voltage drop caused by the resistance to ensure customers are only charged for the energy received.

AcuDC 300 - OCMF Data Format Icon.
OCMF Data Format
Illustration of the AcuDC 300 EV charging meter highlighting its support for OCMF data format.

OCMF DATA FORMAT

OCMF (Open Charge Metering Format) is a widely used data format developed for exchanging data between EV charging infrastructures and billing systems, promoting transparency and interoperability across the industry. AcuDC 300 supports the OCMF format to ensure standardized communication between devices.

AcuDC 300 - Electronic Metrology Seal Icon.
Electronic Metrology Seal
Illustration of the AcuDC 300 EV charging meter highlighting its electronic metrology seal.

ELECTRONIC METROLOGY SEAL

AcuDC 300 features a two-tier metrology security system to ensure data integrity. An electronic seal which can be enabled and disabled by toggling the switch on the meter. Certain settings are locked and cannot be modified when the seal is on. The seal switch is enclosed under a protective front casing and secured with two seal tabs. Anti-tampering seals can be used to prevent unauthorized tampering.

AcuDC 300 - Built-in Data Logging Icon.
Built-in Data Logging
Illustration of the AcuDC 300 EV charging meter highlighting its built-in data logging feature.

BUILT-IN DATA LOGGING

The AcuDC 300 includes 3 data loggers and 1 trend logger, and each can be programmed independently to record different real-time metering data and energy usage parameters. The logs are timestamped and stored in a non-volatile memory for data analysis.

AcuDC 300 Application

DC Fast Charging Stations

Illustration of the AcuDC 300 EV charging meter integrated into a DC EV charging station, connected to an AC/DC converter, circuit breaker, and controller to supply power to an electric vehicle.

AcuDC 300 Product Map

Product map of the AcuDC 300 EV charging meter, highlighting the device's external features labeled from 1 to 11.
1

Front Casing

Transparent front meter casing with accessible display and controls

7

Pulse LED Indicator

LED light to indicate energy pulse signal.
2

Current Input Terminal

Built-in shunt used in direct connection.

 8

Navigation Key

Three navigation keys for LCD display and to configure settings.

3

LCD screen

Backlight screen.

 9

DIN Rail

Used on a 35mm DIN rail mount.
4

Electronic Seal Switch

Enable and disable the seal status.

 10

Power Supply Terminal

Control power Input.
5

RS485 Terminal

Modbus RTU RS485 communication port.

 11

Voltage Input Terminal

Used for voltage input.
6

Ethernet Port

Single RJ45 Ethernet Connector.
1

Front Casing

Transparent front meter casing with accessible display and controls.

2

Current Input Terminal

Built-in shunt used in direct connection.
3

LCD Screen

Backlight screen.
4

Electronic Seal Switch

Enable and disable the seal status.
5

RS485 Terminal

Modbus RTU RS485 communication port.
6

Ethernet Port

Single RJ45 Ethernet Connector.
7

Pulse LED Indicator

LED light to indicate energy pulse signal.
8

Navigation Key

Three navigation keys for LCD display and to configure settings.

9

DIN Rail

Used on a 35mm DIN rail mount.
10

Power Supply Terminal

Control power Input.
11

Voltage Input Terminal

Used for voltage input.

AcuDC 300 Models

AcuDC 301
Application EV Charging Stations
Metering Parameters Voltage, Current, Power, Energy, Charge, Ripple Factor, Demand
Data Logging 1 Trend Logger, 3 Data Loggers
16MB Memory
Communication Modbus-RTU RS485
Modbus-TCP/IP Ethernet
Current Input 0.2%, ±650A
Voltage Input 0-1000V, 0.1% (60-1000V)
Metrology Electronic Seal Switch
Anti-Tampering Seal Tabs with Front Casing
Certification & Compliance UL Recognized, MID, CE, IEC 62053-41:2021 Class 0.5, EN50470-4 Class C, OCMF Format
AcuDC 301
Application EV Charging Stations
Metering Parameters Voltage, Current, Power, Energy, Charge, Ripple Factor, Demand
Data Logging 1 Trend Logger, 3 Data Loggers
16MB Memory
Communication Modbus-RTU RS485
Modbus-TCP/IP Ethernet
Current Input 0.2%, ±650A
Voltage Input 0-1000V, 0.1% (60-1000V)
Metrology Electronic Seal Switch
Anti-Tampering Seal Tabs with Front Casing
Certification & Compliance UL Recognized, MID, CE, IEC 62053-41:2021 Class 0.5, EN50470-4 Class C, OCMF Format

AcuDC 300 FAQ

What is the voltage and current input range of AcuDC 300?

AcuDC 300 supports voltage measurement from 0 to 1000VDC and current measurement from -650A to +650A.

How do I enable/disable the electronic seal?

The electronic seal can be enabled or disabled by toggling the switch highlighted below. Ensure the meter is powered off before switching the seal, and power the meter back on for the change to take effect.

front view drawing of the AcuDC 300 EV charging meter.

When the seal is enabled, certain settings will be locked and cannot be configured.

How to configure cable loss compensation?

Cable loss compensation can be configured via the meter display or the Acuview 2 software. The cable resistance can be set between 0 and 6.5535Ω. Please refer to the user manual for details.

Does the AcuDC 300 include a 9-36VDC auxiliary power supply?

The AcuDC 300 meter does not come with a power supply and must be purchased separately. Accuenergy recommends ordering the AcuLink-RIK-PSU power supply unit.