Testing & Homologation Standard for Electric Vehicle - AC Charger Certification in the Japanese Market [Updated 2026]
By DIYguru · 1/12/2025 · 17 min read
For an AC charger for Electric Vehicles (EVs) in the Japanese market , manufacturers must comply with specific standards and regulatory requirements related to safety, performance, interoperability, and grid compatibility. These requirements are primarily governed by the Ministry
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<p>For an <strong>AC charger for <a href="/search">Electric Vehicles (EVs)</a></strong> in the <strong>Japanese market</strong>, manufacturers must comply with specific standards and regulatory requirements related to safety, performance, interoperability, and grid compatibility. These requirements are primarily governed by the <strong>Ministry of Economy, Trade and Industry (METI)</strong>, along with national and international standards.</p>
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<figure class="wp-block-image is-resized"><img src="https://lh7-rt.googleusercontent.com/docsz/AD_4nXeIe0gyuDbMfV65vBkNv_qUl9C2QbwDvJz-eppLdjt3n0IaxYTIfAIM6TOYwvEH9ANnBbzl0CjmWcHF5-iYaV8ngKMLBKgehgj7KKeYQ8Pb_lv3MjTL0xn-Cukz_lRwKAP25CwjKA?key=HbF3CWZHylMLIDbHvEufpn-d" alt="" style="width:1240px;height:auto"/></figure>
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<h2 class="wp-block-heading"><strong>Safety Certification Requirements</strong></h2>
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<p>The primary certification requirement for EV AC chargers in the Japanese market is the PSE (Product Safety Electrical Appliance & Material) certification, which is mandatory for electrical products under the Electrical Appliance and Material Safety Law (DENAN)</p>
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<h2 class="wp-block-heading"><strong>Technical Standards and Testing Requirements</strong></h2>
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<figure class="wp-block-image"><img src="https://lh7-rt.googleusercontent.com/docsz/AD_4nXdttG48M2UXa-pcNXgMYDSkZDJTOPUHHY-rmNDB-ohMXdvtcU708I_m3Gl8llEG6CRv5J2fercG_xdEUS0AhdL80Mfyd_GO2TxgKNnitCP4nabMSzappduVxgq2n1Dfv2cP3_TWbA?key=HbF3CWZHylMLIDbHvEufpn-d" alt=""/></figure>
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<p><strong>Basic Safety Requirements</strong></p>
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<ul class="wp-block-list"><!-- wp:list-item -->
<li>Protection against electric shock and fire hazards</li>
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<li>Direct/indirect contact protection</li>
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<li>Insulation requirements</li>
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<li>EMC compliance<a href="https://www.thaiauto.or.th/2012/AAI-Summit/doc/Presentation/EV_4th_Jupiter4_5/(2)%20Charging_in_japan_Final_AAIS_EV.pdf">1</a></li>
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<p><strong>Compatibility Testing</strong></p>
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<li>Validation of basic functions including:<!-- wp:list -->
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<li>Connector connection verification</li>
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<li>Charging preparation sequences</li>
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<li>Pilot signal validation (voltage, frequency, pulse width)</li>
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<li>Testing for improper use scenarios</li>
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<li>Breakdown and abnormal state handling</li>
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<li>Verification of reaction times during transitions</li>
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<h2 class="wp-block-heading"><strong>Homologation Process</strong></h2>
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<p>The homologation process in Japan involves several key steps:</p>
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<li>Application submission</li>
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<li>Product testing</li>
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<li>Factory inspection</li>
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<li>Judging panel review</li>
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<li>Certificate & Sticker issuance</li>
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<li>Surveillance<a href="https://www.thaiauto.or.th/2012/AAI-Summit/doc/Presentation/EV_4th_Jupiter4_5/(2)%20Charging_in_japan_Final_AAIS_EV.pdf">1</a></li>
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<p>Key Details:</p>
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<li>Surveillance frequency: Annual</li>
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<li>Validity period: 3 years</li>
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<li>Factory inspection includes QMS and delivery inspection verification<a href="https://www.thaiauto.or.th/2012/AAI-Summit/doc/Presentation/EV_4th_Jupiter4_5/(2)%20Charging_in_japan_Final_AAIS_EV.pdf">1</a></li>
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<h2 class="wp-block-heading"><strong>Technical Standards Compliance</strong></h2>
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<p>Required Standards:</p>
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<li>IEC 61851-1: General requirements for <a href="https://emobility.academy/electric-vehicle/">EV</a> conductive charging</li>
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<li>IEC 62196: Connector specifications</li>
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<li>Japanese electrical safety regulations</li>
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<h2 class="wp-block-heading"><strong>Power Output Requirements</strong></h2>
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<p>As of recent regulations:</p>
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<li>Minimum charging rate requirement: 90kW</li>
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<li>High-demand areas requirement: 150kW</li>
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<li>Current average output: 40kW</li>
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<h2 class="wp-block-heading"><strong></strong><strong>Infrastructure Requirements</strong></h2>
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<p>Installation Guidelines:</p>
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<li>Charging points must be installed every 70km on major highways</li>
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<li>Pay-per-use system implementation required by FY2025</li>
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<h2 class="wp-block-heading"><strong>Additional Requirements</strong></h2>
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<p>Communication Protocols:</p>
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<li>Must support OCPP (Open Charge Point Protocol)</li>
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<li>Vehicle-to-grid (V2G) communication capabilities</li>
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<li>Compatibility with Japanese grid standards<a href="https://driivz.com/blog/ev-charging-standards-and-protocols/">4</a></li>
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<p>Remember that all testing and certification processes must be conducted through authorized Japanese testing laboratories and certification bodies</p>
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<h2 class="wp-block-heading"><strong>1. Regulatory Framework</strong></h2>
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<h3 class="wp-block-heading"><strong>a. Electrical Appliance and Material Safety Law (PSE Certification)</strong></h3>
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<li>The <strong>PSE (Product Safety of Electrical Appliance & Materials)</strong> certification is mandatory for EV chargers in Japan.</li>
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<li>Covers safety testing for electrical components, including:<!-- wp:list -->
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<li>Protection against electric shock.</li>
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<li>Overcurrent and overvoltage protection.</li>
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<li>Fire safety.</li>
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<h3 class="wp-block-heading"><strong>b. Japan Electrical Safety & Environment Technology Laboratories (JET) Certification</strong></h3>
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<li>JET certification ensures compliance with Japanese electrical safety standards.</li>
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<li>Includes detailed safety and performance tests for EV chargers.</li>
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<h3 class="wp-block-heading"><strong>c. Ministry of Economy, Trade and Industry (METI) Regulations</strong></h3>
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<li>METI oversees regulations related to EV charging infrastructure.</li>
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<li>Focuses on energy efficiency, safety, and grid integration.</li>
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<h2 class="wp-block-heading"><strong>2. Standards for EV AC Chargers</strong></h2>
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<h3 class="wp-block-heading"><strong>a. JIS Standards (Japanese Industrial Standards)</strong></h3>
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<li><strong>JIS D 61851</strong>: Japanese adoption of the IEC 61851 standard for conductive charging systems.<!-- wp:list -->
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<li>General requirements, charging modes, and electrical safety.</li>
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<li><strong>JIS C 61173</strong>: Covers EMC requirements for EV charging equipment.</li>
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<h3 class="wp-block-heading"><strong>b. CHAdeMO Standards</strong></h3>
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<li>While CHAdeMO is primarily for DC fast charging, interoperability with EVs using CHAdeMO standards is important for AC chargers when vehicles also support AC charging.</li>
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<h3 class="wp-block-heading"><strong>c. IEC Standards</strong></h3>
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<p>Japan frequently harmonizes JIS standards with IEC standards:</p>
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<li><strong>IEC 62196-2</strong>: Specifies AC charging connectors (Type 1 for Japan).</li>
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<li><strong>IEC 61851-1</strong>: General requirements for EVSE.</li>
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<h2 class="wp-block-heading"><strong>3. Electrical Safety Requirements</strong></h2>
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<h3 class="wp-block-heading"><strong>a. Protection Against Electric Shock</strong></h3>
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<li>Insulation resistance tests.</li>
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<li>Dielectric withstand voltage tests.</li>
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<h3 class="wp-block-heading"><strong>b. Overcurrent and Overvoltage Protection</strong></h3>
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<li>Ground fault protection using Residual Current Devices (RCDs).</li>
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<li>Surge protection as per Japanese grid standards.</li>
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<h3 class="wp-block-heading"><strong>c. Grounding and Earthing</strong></h3>
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<li>Compliance with grounding requirements to ensure user safety and fault tolerance.</li>
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<h2 class="wp-block-heading"><strong>4. Electromagnetic Compatibility (EMC)</strong></h2>
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<p>Chargers must comply with EMC regulations to ensure compatibility with other electronic devices and the grid:</p>
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<li>Conducted emissions testing.</li>
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<li>Radiated emissions testing.</li>
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<li>Immunity to external disturbances such as surges and voltage dips.</li>
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<h2 class="wp-block-heading"><strong>5. Energy Efficiency</strong></h2>
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<h3 class="wp-block-heading"><strong>a. Top Runner Program</strong></h3>
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<li>Japan’s energy efficiency standards are governed under the <strong>Top Runner Program</strong>, which sets benchmarks for high-efficiency performance.</li>
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<li>EV chargers must have low standby power consumption and high active efficiency.</li>
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<h3 class="wp-block-heading"><strong>b. Power Quality</strong></h3>
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<li>Compliance with harmonic distortion limits and power factor requirements as per Japanese grid regulations.</li>
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<h2 class="wp-block-heading"><strong>6. Communication and Interoperability</strong></h2>
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<h3 class="wp-block-heading"><strong>a. EV and Charger Communication</strong></h3>
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<li>Support for <strong>SAE J1772 (Type 1)</strong> connectors, which are standard for AC charging in Japan.</li>
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<li>Interoperability with EVs using proprietary communication protocols.</li>
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<h3 class="wp-block-heading"><strong>b. Smart Charging and Demand Response</strong></h3>
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<li>Support for <strong>Open Charge Point Protocol (OCPP)</strong> for remote monitoring and load management.</li>
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<li>Compliance with Japanese smart grid initiatives, enabling demand-side management.</li>
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<h2 class="wp-block-heading"><strong>7. Environmental and Durability Testing</strong></h2>
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<h3 class="wp-block-heading"><strong>a. Ingress Protection (IP Rating)</strong></h3>
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<li>Minimum <strong>IP54</strong> rating for outdoor installations.</li>
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<li>Protection against dust, water, and mechanical damage.</li>
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<h3 class="wp-block-heading"><strong>b. Climate and Durability Testing</strong></h3>
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<li>Chargers must be tested for operation in Japan's diverse climatic conditions:<!-- wp:list -->
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<li>High humidity and temperature resistance.</li>
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<li>Corrosion resistance for coastal areas</li>
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<h2 class="wp-block-heading"><strong>8. Cybersecurity and Data Privacy</strong></h2>
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<h3 class="wp-block-heading"><strong>a. Security Standards</strong></h3>
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<li>Chargers with networked features must ensure secure communication channels.</li>
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<li>Use of encrypted protocols like TLS for data exchange between EVSE, vehicles, and backend systems.</li>
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<h3 class="wp-block-heading"><strong>b. Data Privacy</strong></h3>
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<li>Compliance with Japan’s <strong>Act on the Protection of Personal Information (APPI)</strong> for managing user data securely.</li>
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<h2 class="wp-block-heading"><strong>9. Functional Testing</strong></h2>
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<h3 class="wp-block-heading"><strong>a. Safety Features</strong></h3>
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<li>Ground fault detection and protection.</li>
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<li>Overcurrent and thermal shutdown mechanisms.</li>
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<h3 class="wp-block-heading"><strong>b. Charging Performance</strong></h3>
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<li>Tests for compatibility with various EV models.</li>
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<li>Verifying charging times and current delivery against rated specifications.</li>
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<h2 class="wp-block-heading"><strong>10. Labeling and Documentation</strong></h2>
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<h3 class="wp-block-heading"><strong>a. Labeling Requirements</strong></h3>
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<p>Chargers must include:</p>
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<li><strong>PSE mark</strong> for electrical safety certification.</li>
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<li>Input/output voltage and current ratings.</li>
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<li>Manufacturer and model details.</li>
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<li>Safety warnings in Japanese.</li>
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<h3 class="wp-block-heading"><strong>b. Documentation</strong></h3>
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<li>User manuals in Japanese, including installation, operation, and safety instructions.</li>
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<li>Declaration of Conformity (DoC) for applicable standards.</li>
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<h2 class="wp-block-heading"><strong>11. Certification and Testing Process</strong></h2>
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<div style="height:15px" aria-hidden="true" class="wp-block-spacer"></div>
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<h3 class="wp-block-heading"><strong>a. PSE Certification</strong></h3>
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<li>Application submission to a METI-authorized testing lab.</li>
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<li>Product testing for electrical safety, insulation, and performance.</li>
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<li>Factory audit to ensure consistent production quality.</li>
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<li>Issuance of PSE certification upon compliance.</li>
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<h3 class="wp-block-heading"><strong>b. JET Certification</strong></h3>
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<li>Testing at JET-accredited labs.</li>
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<li>Safety and performance evaluations as per JIS standards.</li>
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<h2 class="wp-block-heading"><strong>12. Installation and Grid Integration</strong></h2>
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<h3 class="wp-block-heading"><strong>a. Installation Standards</strong></h3>
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<li>Compliance with Japanese electrical installation standards for EVSE.</li>
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<li>Adherence to local utility requirements for grid connection.</li>
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<h3 class="wp-block-heading"><strong>b. Load Management</strong></h3>
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<li>Chargers must integrate with the Japanese grid for load balancing and peak demand management.</li>
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<h2 class="wp-block-heading"><strong>13. Environmental Compliance</strong></h2>
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<li>Compliance with Japan’s </li>
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<li>, ensuring end-of-life disposal and recycling of EV chargers.</li>
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<li>Adherence to <strong>RoHS-like regulations</strong> for limiting hazardous substances.</li>
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<h2 class="wp-block-heading"><strong>14. Incentive Eligibility</strong></h2>
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<li>To qualify for government subsidies and incentives for EVSE deployment:<!-- wp:list -->
<ul class="wp-block-list"><!-- wp:list-item -->
<li>Chargers must meet <strong>METI guidelines</strong> for energy efficiency and safety.</li>
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<li>Registration with local utility programs for grid integration.</li>
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<p>The <strong>ev ac charger</strong> plays an important role in meeting these strict requirements by providing safety, efficiency, and reliability. By following JIS standards like JIS D 61851, manufacturers ensure that the <strong>ev ac charger</strong> meets performance standards needed for both home and commercial use. With advancements in smart charging technology, the <strong>ac charger</strong> also supports seamless integration with the grid and helps manage electricity demand efficiently.</p>
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<p>Manufacturers must focus on designing the <strong>ac charger</strong> to meet cybersecurity and data privacy laws. This ensures the chargers remain a key part of reliable and future-ready EV charging solutions. Combining efficiency, compatibility, and durability, the <strong>ac charger</strong> is essential for supporting Japan's move towards electrification and sustainability.<br></p>
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<h3 class="wp-block-heading"><strong>FAQs</strong></h3>
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<p><strong>What is the EV Policy in Japan?</strong><strong><br></strong>Japan's EV policy promotes the transition to electric vehicles with subsidies, energy efficiency programs, and strict safety and performance standards to meet decarbonization goals.</p>
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<p><strong>What are the Power Requirements for an Electric Car Charger?</strong><strong><br></strong>Power requirements vary by charger type: Level 1 chargers use 120V, Level 2 chargers require 240V, and DC fast chargers operate at higher voltages like 400V or more.</p>
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<p><strong>What Maintenance is Required for EV Chargers?</strong><strong><br></strong>Regular inspections, firmware updates, and testing of safety features like ground fault detection are essential for maintaining EV chargers.</p>
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<p><strong>What is the IEC Standard for EV Charging?</strong><strong><br></strong>The IEC 61851-1 and IEC 62196-2 are key standards covering EV charging systems, connectors, and general safety requirements.</p>
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<p><strong>References:</strong></p>
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<p><strong><br></strong></p>
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<p>[1]<a href="https://www.thaiauto.or.th/2012/AAI-Summit/doc/Presentation/EV_4th_Jupiter4_5/(2)%20Charging_in_japan_Final_AAIS_EV.pdf">https://www.thaiauto.or.th/2012/AAI-Summit/doc/Presentation/EV_4th_Jupiter4_5/(2)%20Charging_in_japan_Final_AAIS_EV.pdf</a> </p>
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<p>[2] <a href="https://www.en-plustech.com/certifications/">https://www.en-plustech.com/certifications/</a> </p>
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<p>[3] <a href="https://electricdrives.tv/japan-introducing-new-ev-charging-standards-encouraging-uptake/">https://electricdrives.tv/japan-introducing-new-ev-charging-standards-encouraging-uptake/</a> </p>
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<p>[4] <a href="https://driivz.com/blog/ev-charging-standards-and-protocols/">https://driivz.com/blog/ev-charging-standards-and-protocols/</a> </p>
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<p>[5]<a href="https://www.tuv.com/content-media-files/master-content/services/products/1369-tuv-rheinland-electric-vehicle-charging-system-testing/t%C3%BCv-rheinland-170111_tr-ev-services.pdf">https://www.tuv.com/content-media-files/master-content/services/products/1369-tuv-rheinland-electric-vehicle-charging-system-testing/t%C3%BCv-rheinland-170111_tr-ev-services.pdf</a> </p>
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<p>[6] <a href="https://www.ul.com/services/electric-vehicle-ev-charging-cable-testing-and-certification">https://www.ul.com/services/electric-vehicle-ev-charging-cable-testing-and-certification</a> </p>
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<p>[7]<a href="https://www.ceoinsightsasia.com/business-inside/new-strategies-powering-up-japan-s-electric-vehicle-future-nwid-10834.html">https://www.ceoinsightsasia.com/business-inside/new-strategies-powering-up-japan-s-electric-vehicle-future-nwid-10834.html</a> </p>
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<p>[8]<a href="https://www.tek.com/en/solutions/industry/automotive-test-solutions/evse-testing/ev-charging-standards">https://www.tek.com/en/solutions/industry/automotive-test-solutions/evse-testing/ev-charging-standards</a> </p>
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<p>[9]<a href="https://asia.nikkei.com/Business/Automobiles/Japan-to-relax-rules-on-fast-EV-chargers-jump-starting-rollout">https://asia.nikkei.com/Business/Automobiles/Japan-to-relax-rules-on-fast-EV-chargers-jump-starting-rollout</a> </p>
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<p>[10] <a href="http://www.evaap.org/pdf/jevs.pdf">http://www.evaap.org/pdf/jevs.pdf</a> </p>
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<p>[11] <a href="https://www.asbeam.com/news/evse_certification-cn.html">https://www.asbeam.com/news/evse_certification-cn.html</a> </p>
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<p>[12] <a href="https://www.meti.go.jp/english/press/2023/1018_002.html">https://www.meti.go.jp/english/press/2023/1018_002.html</a> </p>
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<p>[13]<a href="https://www.tuvsud.com/en/industries/mobility-and-automotive/automotive-and-oem/e-mobility/e-mobility-infrastructure">https://www.tuvsud.com/en/industries/mobility-and-automotive/automotive-and-oem/e-mobility/e-mobility-infrastructure</a> </p>
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<p>[14]<a href="https://www.tuvsud.com/en-in/industries/mobility-and-automotive/automotive-and-oem/e-mobility/e-mobility-infrastructure">https://www.tuvsud.com/en-in/industries/mobility-and-automotive/automotive-and-oem/e-mobility/e-mobility-infrastructure</a> </p>
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<p>[15] <a href="https://www.vector.com/in/en/know-how/smart-charging/charging-standards/">https://www.vector.com/in/en/know-how/smart-charging/charging-standards/</a> </p>
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<p>[16] <a href="https://stock.adobe.com/search?k=ev+charger">https://stock.adobe.com/search?k=ev+charger</a> </p>
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<p>[17]<a href="https://www.vectorstock.com/royalty-free-vector/sae-j1772-usa-and-japan-charger-standard-vector-43838174">https://www.vectorstock.com/royalty-free-vector/sae-j1772-usa-and-japan-charger-standard-vector-43838174</a> </p>
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<p>[18] <a href="https://www.dekra.com/en/ev-charging-station-and-infrastructure-testing/">https://www.dekra.com/en/ev-charging-station-and-infrastructure-testing/</a> </p>
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<p>[19] <a href="https://driivz.com/blog/ev-charging-standards-and-protocols/">https://driivz.com/blog/ev-charging-standards-and-protocols/</a> </p>
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<p>[20]<a href="https://www.tek.com/en/solutions/industry/automotive-test-solutions/evse-testing/ev-charging-standards">https://www.tek.com/en/solutions/industry/automotive-test-solutions/evse-testing/ev-charging-standards</a> </p>
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<p>[21] <a href="https://www.dekra.co.jp/en/charging-infrastructure/">https://www.dekra.co.jp/en/charging-infrastructure/</a> </p>
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<p>[22]<a href="https://www.chademo.com/japan-opens-to-1000v-charging-and-next-gen-fast-chargers-are-in-development">https://www.chademo.com/japan-opens-to-1000v-charging-and-next-gen-fast-chargers-are-in-development</a> </p>
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<p>[23] <a href="https://www.jae.com/en/topics/detail/id=111658">https://www.jae.com/en/topics/detail/id=111658</a> </p>
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<p>[24]<a href="https://www.linkedin.com/pulse/electric-vehicles-safety-characteristics-testing-standards-gupta">https://www.linkedin.com/pulse/electric-vehicles-safety-characteristics-testing-standards-gupta</a> </p>
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<p>[25]<a href="https://www.pluginindia.com/blogs/bharat-ev-specifications-for-ac-and-dc-charging-everything-you-need-to-know">https://www.pluginindia.com/blogs/bharat-ev-specifications-for-ac-and-dc-charging-everything-you-need-to-know</a> </p>
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<p>[26] <a href="https://www.power-sonic.com/blog/ev-charging-connector-types/">https://www.power-sonic.com/blog/ev-charging-connector-types/</a> </p>
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<p>[27] <a href="https://afdc.energy.gov/files/u/publication/EV_Charger_Selection_Guide_2018-01-112.pdf">https://afdc.energy.gov/files/u/publication/EV_Charger_Selection_Guide_2018-01-112.pdf</a> </p>
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<p>[28] <a href="https://nestdigital.com/blog/will-that-charging-gun-fit-my-electric-car/">https://nestdigital.com/blog/will-that-charging-gun-fit-my-electric-car/</a> </p>
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<p>[29] <a href="https://publications.jrc.ec.europa.eu/repository/bitstream/JRC113420/kjna29371enn.pdf">https://publications.jrc.ec.europa.eu/repository/bitstream/JRC113420/kjna29371enn.pdf</a> </p>
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<p>[30] <a href="https://evreporter.com/guide-to-ev-charging-and-standards-in-india/">https://evreporter.com/guide-to-ev-charging-and-standards-in-india/</a> </p>
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<p>[31]<a href="https://thedriven.io/2023/08/31/is-this-the-death-of-chademo-the-japanese-ev-charging-standard/">https://thedriven.io/2023/08/31/is-this-the-death-of-chademo-the-japanese-ev-charging-standard/</a> </p>
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