Based on the search results, CU-TR certification for low-voltage electrical appliances is a mandatory requirement for accessing the Eurasian Economic Union (EAEU) market (Russia, Belarus, Kazakhstan, Armenia, Kyrgyzstan). Here is a structured analysis of key requirements and procedures:
⚡ 1. Applicable Technical Regulation
TR CU 004/2011: Governs the safety of low-voltage equipment operating at AC 50V–1000V or DC 75V–1500V .
Scope: Includes switchgear, transformers, electrical components, and box-type substations .
📑 2. Certification Types
Type    Requirements    Validity
EAC Certificate (CoC)    Issued by accredited bodies; requires product testing + factory audits .    1–5 years 
EAC Declaration (DoC)    Self-declaration by manufacturers; minimal testing for low-risk products .    Up to 5 years 
Note:
CoC applies to high-risk products (e.g., industrial switchgear).
DoC suits simpler appliances (e.g., household electrical components) .
⚙️ 3. Core Safety Requirements
Electrical Safety: Insulation resistance, leakage current, dielectric strength .
Mechanical Safety: Structural stability, impact resistance .
Labeling: Products must bear the EAC mark (min. 5mm) with Ukrainian/Russian instructions .
RoHS Compliance: Adherence to TR EAEU 037/2016 restricting hazardous substances (e.g., lead, mercury) .
📋 4. Required Documentation
1.Technical specifications and circuit diagrams .
2.ISO 9001 certificate (mandatory for factory audits) .
3.Test reports (e.g., CE-LVD, CB Scheme reports accepted) .
4.User manuals in Russian or Ukrainian .
5.Manufacturing process description .
🔬 5. Testing & Audit Process
1.Sample Testing: Conducted in EAEU-accredited labs for safety and EMC (TR CU 020/2011) .
2.Factory Audit:
Mandatory for CoC with 1–5 year validity .
Covers production controls, quality management, and compliance with ISO 9001 .
3.EMC Testing: Radiated emissions, surge immunity (up to 2kV) .
⏱️ 6. Timeline & Costs
Timeline:
CoC: 4–8 weeks (including audits) .
DoC: 2–3 weeks .
Cost Factors: Product complexity, certification type, and lab testing scope .
⚠️ 7. Critical Considerations
Local Representation: Non-EEU manufacturers must appoint an EAEU-registered legal entity to apply .
Annual Surveillance: Multi-year CoC requires yearly factory audits .
Geopolitical Impact: Certificates issued from Russia; verify logistics due to ongoing conflicts .
💡 Recommendations for Exporters
1.Pre-assessment: Confirm if your product falls under TR CU 004/2011 using the EAEU Unified List .
2.Leverage Existing Certificates: CE or CB Scheme reports can reduce testing redundancy .
3.Partner Locally: Collaborate with EAEU-based agents for documentation and audits .
Example: Zhongqi Power Equipment Co., Ltd. obtained a 3-year CU-TR certificate for low-voltage switchgear after factory audits and ISO 9001 verification .

For detailed technical annexes (e.g., TR CU 004/2011 safety clauses), consult EAEU legal portals or accredited bodies like Rosstandart .