Eastron DCM6-650 4-Wire DC Meter: Precision Power Measurement for EV Fast Charging

Understanding DC Metering Systems: Two-Wire and Four-Wire

In the world of DC metering, the terms "two-wire", "four-wire" describe how power and signal transmission are managed. These configurations directly impact accuracy, stability, and suitability for high-power applications like electric vehicle (EV) fast charging.

2-Wire DC Meters: A two-wire system combines power supply and signal transmission into a single pair of wires. While simple and cost-effective, this design lacks precise voltage drop measurement capabilities, making it unsuitable for high-current applications requiring critical precision.

4-Wire DC Meters: Fully isolate power and signal lines with dedicated pairs for each. Independent signal paths prevent voltage drops from affecting measurements, eliminating interference and ensuring stable power delivery. This configuration enables ultra-precise measurements, ideal for applications demanding high accuracy.

4-Wire DC Meter Dominate Modern Applications

As EV adoption accelerates, charging infrastructure must support higher currents and voltages while maintaining precision. Traditional two-wire DC meters struggle with accuracy (1% or better) and anti-interference capabilities, leading to operational losses and user distrust.

The four-wire DC meter (e.g., Eastron DCM6-650) addresses these challenges by monitoring line loss in real time and maintaining stable performance across extreme temperatures (-40℃ to +80℃), making it ideal for 24/7 charging stations.

Eastron DCM6-650: The Future-Proof Solution for DC Charging Infrastructure

Eastron DCM6-650 is a high-performance 4-wire DC energy meter engineered for modern charging demands:

High Current & Voltage Capacity: Support up to 650A and 1000V, compatible with current and future EV battery standards.

Precision & Reliability: 4-wire design minimizes voltage drop errors, while line loss measurement optimizes energy efficiency.

Eichrecht(PTB) Certification: ensures billing accuracy and compliance with European regulations, critical for global market entry.

Data Security and Transparency: Including features like charge data recording, time monitoring, and secure data encryption, ensuring transparency and security in every transaction.

External Display Modules: Eastron DCM-D external display module (connected via RJ12 cable) provides real-time data for operators and users.

As the world transitions to sustainable energy, reliable DC charging infrastructure is paramount. Eastron DCM6-650 4-wire smart DC meter delivers laboratory-grade accuracy in real-world conditions, ensuring every kilowatt-hour is accounted for. By combining precision, durability, and compliance, it empowers greener mobility and operational trust.