Acrel AM Series Protection Relays Achieve VDE-AR-N 4110 Certification — Unlocking Full Market Access for German Medium-Voltage Renewable Energy Projects

28 04, 2026

AM2SE, AM3SE, and AM5SE Anti-Islanding Protection Relays Pass Rigorous DEKRA Testing Under FGW TG3 and VDE-AR-N 4110:2023 Standards

Acrel Secures Critical Grid-Connection Certification for German Medium-Voltage Market

Acrel Co., Ltd. is proud to announce that its AM2SE, AM3SE, and AM5SE series anti-islanding protection relays have successfully obtained VDE-AR-N 4110 certification(Certificate No. 6246949.01 AOC), following comprehensive testing by DEKRA Testing and Certification. This milestone marks Acrel's official entry into the German medium-voltage renewable energy market — one of Europe's most regulated and technically demanding grid environments.

The certification covers full compliance with FGW TG3 Revision 26(clauses 4.4, 4.5) and VDE-AR-N 4110:2023(clauses 10.3, 10.4), validating the relays' performance in critical grid protection functions including PGU disconnection from the grid, verification of connection conditions, and connection behavior after uncoupling protection triggering.

Why VDE-AR-N 4110 Certification Is Essential for Market Entry

Germany operates one of the world's most sophisticated compliance frameworks for renewable energy grid integration. The VDE-AR-N 4110 technical connection rules (TAR Medium Voltage) are legally binding for all power generation systems, energy storage systems, and mixed systems connected to the medium-voltage grid — typically covering installations from 30 kW to 1 MW.

Key regulatory requirements under VDE-AR-N 4110 include:

Failure to comply with these standards results in legal consequences including fines and with drawal of operating licenses, making VDE certification non-negotiable for market access .

AM Series Technical Specifications

The certified AM series relays deliver comprehensive protection capabilities engineered for German grid stability requirements:

Applications in the German Energy Transition

The certified AM series relays are optimized for critical German renewable energy applications:

Commercial & Industrial PV Systems (30 kW – 1 MW)

• Medium-voltage rooftop and ground-mount installations requiring full VDE-AR-N 4110 compliance
• Anti-islanding protection ensuring immediate disconnection during grid outages
• Synchronization verification preventing unsafe reconnection sequences

Battery Energy Storage Systems (BESS)

• Grid-tied storage installations requiring bidirectional protection schemes
• Frequency-watt response supporting grid stability during demand fluctuations
• Dynamic voltage support compliant with German reactive power requirements

Wind Power & CHP Integration

• Onshore wind farm medium-voltage connections
• Combined heat and power (CHP) plant grid integration
• Hybrid renewable systems with multiple generation sources

Certification Details

Strategic Significance for Acrel's European Expansion

Germany represents Europe's largest renewable energy market, with over 80 GW of installed solar capacity and ambitious targets under the European Green Deal and REPowerEU Plan. The VDE-AR-N 4110 certification positions Acrel to serve:

• German EPC contractorsrequiring certified protection components for utility-scale projects
• Energy storage integratorsbuilding grid-compliant BESS installations
• Industrial facility managersimplementing on-site renewable generation with medium-voltage connection
• European system exportersleveraging German certification as a quality benchmark across EU markets

"Germany's grid codes are among the most demanding globally, reflecting the country's leadership in renewable energy integration," said an Acrel spokesperson. "Achieving VDE-AR-N 4110 certification through DEKRA validates our engineering capabilities and opens immediate opportunities in one of the world's most important energy transition markets."

About Acrel

Acrel Co., Ltd. specializes in intelligent power monitoring, energy management systems, and electrical safety protection devices. With comprehensive certifications including CE,MID,TÜV, and now VDE-AR-N 4110, Acrel delivers grid-compliant solutions for residential, commercial, and utility-scale renewable energy applications worldwide.

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