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AcuDC-262 product images.
Front view of the AcuDC-262
Right quarter front view of the AcuDC-262
Bottom view of the AcuDC-262
Side view of the AcuDC-262
UL Recognized certification
CE certification

Advanced DC Power & Energy Meter

Certified to UL Recognized and IEC 62053-41 Class 0.5 standards, the AcuDC-262 is a multi-function DC power and energy meter designed for precise measurement across a wide range of DC power systems. The meter supports one DC voltage input and two independent DC current inputs, delivering direct-connected voltage measurement with 0.1% accuracy from 60-1000V and 0.2% current accuracy per channel via shunt sensors, allowing accurate multi-circuit DC monitoring for applications such as data center PDUs, power distribution systems, and battery energy storage systems.

  • Measures one DC Voltage input and two DC Current inputs.
  • Direct connected voltage measurement, at 0.1% accuracy from 60V to 1000V.
  • Current measurement at 0.2% accuracy.
  • Flexible current measurement via hall sensor or shunt sensors.
  • Bidirectional energy measurement for each current input and system total.
  • Cable loss compensation for true energy measurement and billing.
  • Three independent configurable data loggers and one trend logger to record readings.
  • Communication via Modbus RTU over RS485, and Modbus TCP/IP via Ethernet, for data query and configuration.
  • UL Recognized certification and CE conformity.

AcuDC-262 Overview

Why DC Metering is Critical for Modern Power Systems?

DC metering is critical as power systems adopt solar PV, battery energy storage, EV fast charging, and DC microgrids. Accurate DC measurement provides transparent energy accounting, validates system efficiency, and supports protection and control strategies. Reliable meters quantify voltage, current, power, and energy in real time, offering revenue-grade billing, performance benchmarking, and early fault detection, collectively improving reliability and regulatory compliance across evolving DC infrastructures.

What’s the Difference Between DC and AC Energy Metering?

DC energy metering is used in systems such as solar panels, battery systems, and EV charging stations, where voltage and current flow in a single direction. DC meters focus on stable, accurate measurements and tracking continuous energy flow. AC energy metering is used in homes, buildings, and utility grids where power alternates. AC meters measure changing waveforms, power factor, and distortion. Both types of meters maintain accurate energy monitoring but are designed for different electrical systems.

Front-right angled view of the AcuDC-262

AcuDC-262 Main Features

Revenue-grade accuracy feature of the AcuDC-262

REVENUE-GRADE ACCURACY

Delivers real-time DC energy monitoring with revenue-grade precision, meeting IEC 62053-41 Class 0.5 accuracy standards. With 0.1% voltage accuracy, 0.2% current accuracy, and 0.5% accuracy for power, energy, charge, and demand measurements, the meter provides consistent, reliable performance across a broad range of DC applications.

Dual channel measurement feature of the AcuDC-262

DUAL CHANNEL MEASUREMENT

Supports two DC current inputs, each compatible with shunt sensors and Hall effect sensors, allowing the meter to measure two independent DC current channels and provide accurate, simultaneous monitoring of multiple DC circuits within a single device.

Cable loss compensation feature of the AcuDC-262

CABLE LOSS COMPENSATION

Offers current and voltage cable loss compensation to maintain accurate billing in DC power systems. Differences in cable material, length, and conductor size introduce resistance that causes voltage drop and power loss between the source and the load. By accounting for these losses, the meter ensures accurate measurements so billing reflects the actual energy delivered to the load.

Anti-tamper seal feature of the AcuDC-262

ANTI-TAMPER SEAL

Provides unauthorized tamper protection through both physical and electronic seals. Locked parameter settings protect calibration and billing configurations from unauthorized modification, and when paired with a sealed shunt, the system forms a fully enclosed, tamper-resistant measurement chain, maintaining data integrity for revenue-grade DC applications.

Built-in data logging feature of the AcuDC-262

BUILT-IN DATA LOGGING

Includes three independent data loggers and a trend logger, each configurable to record voltage, current, power, energy, and amp-hour metrics. Equipped non-volatile memory, the meter can store 1-minute interval data for up to 16 months, delivering reliable long-term record retention for detailed analysis and reporting.

Multi-protocol support feature of the AcuDC-262

MULTI-PROTOCOL SUPPORT

Supports Modbus RTU communication through a built-in RS485 port and Modbus TCP/IP over a 100 Mbps Ethernet connection for reliable remote data access and configuration.

Revenue-grade accuracy icon
Revenue-Grade Accuracy
Revenue-grade accuracy feature of the AcuDC-262

REVENUE-GRADE ACCURACY

Delivers real-time DC energy monitoring with revenue-grade precision, meeting IEC 62053-41 Class 0.5 accuracy standards. With 0.1% voltage accuracy, 0.2% current accuracy, and 0.5% accuracy for power, energy, charge, and demand measurements, the meter provides consistent, reliable performance across a broad range of DC applications.

Dual channel measurement icon
Dual Channel Measurement
Dual channel measurement feature of the AcuDC-262

DUAL CHANNEL MEASUREMENT

Supports two DC current inputs, each compatible with shunt sensors and Hall effect sensors, allowing the meter to measure two independent DC current channels and provide accurate, simultaneous monitoring of multiple DC circuits within a single device.

Cable loss compensation icon
Cable Loss Compensation
Cable loss compensation feature of the AcuDC-262

CABLE LOSS COMPENSATION

Offers current and voltage cable loss compensation to maintain accurate billing in DC power systems. Differences in cable material, length, and conductor size introduce resistance that causes voltage drop and power loss between the source and the load. By accounting for these losses, the meter ensures accurate measurements so billing reflects the actual energy delivered to the load.

Anti-tamper seal icon
Anti-Tamper Seal
Anti-tamper seal feature of the AcuDC-262

ANTI-TAMPER SEAL

Provides unauthorized tamper protection through both physical and electronic seals. Locked parameter settings protect calibration and billing configurations from unauthorized modification, and when paired with a sealed shunt, the system forms a fully enclosed, tamper-resistant measurement chain, maintaining data integrity for revenue-grade DC applications.

Built-in data logging icon
Built-in Data Logging
Built-in data logging feature of the AcuDC-262

BUILT-IN DATA LOGGING

Includes three independent data loggers and a trend logger, each configurable to record voltage, current, power, energy, and amp-hour metrics. Equipped non-volatile memory, the meter can store 1-minute interval data for up to 16 months, delivering reliable long-term record retention for detailed analysis and reporting.

Multi-protocol support icon
Multi-Protocol Support
Multi-protocol support feature of the AcuDC-262

MULTI-PROTOCOL SUPPORT

Supports Modbus RTU communication through a built-in RS485 port and Modbus TCP/IP over a 100 Mbps Ethernet connection for reliable remote data access and configuration.

AcuDC-262 Applications

Application diagram of the AcuDC-262

AcuDC-262 Product Map

Product map of the AcuDC-262
1

LCD Display

Backlight screen.

6

Current Input Terminals

Two current input terminals.

2

Pulse LED Indicator

LED indicator for energy pulse signals.

7

Power Supply Terminal

Control power Input.

3

DIN Rail

Used on a 35mm DIN rail mount.

8

Electronic Seal Switch

Anti-tampering design with metrology seal.

4

Ethernet Port

Single RJ45 Ethernet Connector.

9

Voltage Input Terminal

Used for voltage input.

5

RS485 Terminal

Modbus RTU RS485 communication port.

10

Navigation Panel

Five navigation keys for local configuration.

1

LCD Display

Backlight screen.

2

Pulse LED Indicator

LED indicator for energy pulse signals.

3

DIN Rail

Used on a 35mm DIN rail mount.

4

Ethernet Port

Single RJ45 Ethernet Connector.

5

RS485 Terminal

Modbus RTU RS485 communication port.

6

Current Input Terminals

Two current input terminals.

7

Power Supply Terminal

Control power Input.

8

Electronic Seal Switch

Anti-tampering design with metrology seal.

9

Voltage Input Terminal

Used for voltage input.

10

Navigation Panel

Five navigation keys for local configuration.

AcuDC-262 Models

AcuDC-262
Application Data Center PDUs, Renewable Energy Generation & Storage, Solar PV, Power Distribution Systems, Light Rail Transit Systems, EV Fast Charging Stations, Industrial DC Control Systems
Metering Parameters Voltage, Current, Power, Energy, Charge, Ripple Factor, Demand
Connector Ports 2
Data Logging 3 Configurable Data Loggers, 1 Trend Logger
Communication Modbus RTU via RS485, Modbus TCP/IP via Ethernet
Current Input 20-50,000A, 0.2% via External Shunts (2–100% of Rated Current)
Voltage Input 0-1000V, 0.1% (60-1000V)
Metrology Electronic Seal Switch
Anti-Tampering Seal
OCMF
Certification & Compliance IEC 62053-41:2021 Class 0.5, UL Recognized, CE, CTEP, NTEP, Eichrecht, PTB, LNE
AcuDC-262
Application Data Center PDUs, Renewable Energy Generation & Storage, Solar PV, Power Distribution Systems, Light Rail Transit Systems, EV Fast Charging Stations, Industrial DC Control Systems
Metering Parameters Voltage, Current, Power, Energy, Charge, Ripple Factor, Demand
Connector Ports 2
Data Logging 3 Configurable Data Loggers, 1 Trend Logger
Communication Modbus RTU via RS485, Modbus TCP/IP via Ethernet
Current Input 20-50,000A, 0.2% via External Shunts (2–100% of Rated Current)
Voltage Input 0-1000V, 0.1% (60-1000V)
Metrology Electronic Seal Switch
Anti-Tampering Seal
OCMF
Certification & Compliance IEC 62053-41:2021 Class 0.5, UL Recognized, CE, CTEP, NTEP, Eichrecht, PTB, LNE

AcuDC-262 FAQ

What is the voltage and current input range of AcuDC-262?

AcuDC-262 supports 0-1000VDC direct-connected voltage measurement with a 10V pickup and accepts current inputs via external shunts, supporting –100 to 100mV, 4-20 mA, and ±5 V signals, with shunt ratings from 20A up to 50,000A.

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-262
How to configure cable loss compensation?

Cable loss compensation can be configured through the meter’s setup menu or Modbus registers. Users can enable the feature and then enter the cable length, the cable resistance per unit length, and the positive or negative compensation direction, depending on the installation. This function corrects voltage drop across long DC cables to improve measurement accuracy at the point of load.

Where do I view the energy (kWh) consumption on the meter?

Energy readings such as Wh, kWh, and Ah can be viewed directly on the meter’s front display within the Energy or Measurement pages, and the same values are available through Modbus registers for remote monitoring.