Accuenergy AcuDC 260 Series 1000V EV Chargers
- Power Quality Product Standards & Compliance
Marin Holt
- 0
- 6 minutes read
- AcuDC-261 carries MID and PTB (Eichrecht) certification for EU public charging compliance
- AcuDC-262 is UL-certified for North America and international markets without MID mandates
- Direct DC voltage measurement to 1000V at 0.1% accuracy; dual DC current channels at 0.2% accuracy
- IEC 62053-41 Class 0.5 certification bounds billing error at 0.5% per charging session
- Over 2 million public DC fast chargers in service globally in 2024; millions more projected by 2030
Accuenergy launched the AcuDC 260 Series in December 2025, a revenue-grade DC power meter line built for public EV fast charging stations, battery energy storage systems, and high-voltage DC infrastructure operating at up to 1000V DC.
Two Models for Two Regulatory Zones
The series ships in two variants tuned to regional certification requirements. The AcuDC-261 carries MID and PTB (Eichrecht) certification for the European Union, where public EV charging stations must use type-approved meters for legally binding revenue settlement. The AcuDC-262 holds UL certification for North American and international markets where MID compliance is not mandated. Both models share the same measurement core: DC voltage to 1000V at 0.1% accuracy, dual DC current channels at 0.2% accuracy, and support for shunt or Hall-effect current sensors. Accuracy is certified to EN 50470-4 Class C and IEC 62053-41 Class 0.5.
Bidirectional Measurement and Revenue-Grade Billing
Both models include bi-directional energy measurement for battery-buffered charging architectures, where BESS units absorb grid power during off-peak hours and discharge during charging peaks. Cable loss compensation corrects for resistive losses in the conductors between the meter and the vehicle connector, so customers are billed for energy delivered, not for measurement points upstream. The AcuDC-261 adds tamper-evident metrology and digitally signed OCMF transaction records, which EU law requires for charging dispute resolution. Both meters log data internally for auditing and connect to charger controllers, EMS systems, SCADA, and cloud platforms via Modbus RTU and Modbus TCP/IP.
Why DC Metering at the Output Matters
Revenue metering for EV charging has historically been placed on the AC input side of charger power modules, where established AC meter accuracy standards apply. As charger power levels increase toward 350 kW and battery-buffered architectures become common, AC-side measurement introduces errors from power conversion efficiency variation. Measuring DC directly at the output eliminates conversion efficiency uncertainty. At IEC 62053-41 Class 0.5, the AcuDC 260 bounds energy error at 0.5% per session, a level that supports billing arbitration under EU MID law and satisfies revenue-grade requirements for BESS dispatch settlement. Public DC fast chargers passed 2 million units globally in 2024, with several million additional units projected by 2030 as charger platforms migrate to 800-1000V architectures.
Critical Analysis
Revenue-grade DC metering compounds two measurement errors: voltage at 0.1% accuracy (1V error at 1000V) and current at 0.2% accuracy (1A error at 500A). Accuenergy AcuDC’s monitoring platform identifies distribution assets under stress from harmonic-rich loads, enabling utilities to target transformer upgrades before failure.
5-Year Projection
As DC Power Metering reaches market saturation over the next 5 years, system integration costs are projected to fall by 40%, shifting the industry focus entirely to software orchestration.
Critical Perspective
Accuenergy launched the AcuDC 260 Series in December 2025. This meter claims 0.1% voltage accuracy, but the Tesla Supercharger network uses AC metering with a claimed 1% accuracy. Historically, revenue-grade metering mandates have faced implementation challenges, like the UK’s smart meter rollout delays. Will these new DC meters truly capture lost revenue or just add another layer of complexity?
