A detailed comparison and analysis of certification requirements and procedures for high-voltage transformer compensators in Russia (GOST-R), Kazakhstan (GOST-K), and Kyrgyzstan (GOST-KG), compiled in accordance with the latest regulations and standards:
I. Russian GOST-R Certification
1. Regulatory Basis  
Mandatory certification scope: High-voltage transformer compensators (voltage exceeding 1 kV) must undergo mandatory GOST-R Declaration of Conformity (DoC) certification, in accordance with Russian Government Decree No. 2425 (2021) and Decree No. 982 (2009).  
Not applicable to EAC certification: High-voltage electrical equipment is not within the scope of the Customs Union EAC certification and must undergo GOST-R certification.
2. Certification Types  
GOST-R Declaration of Conformity (DoC): Mandatory application, submitted by a Russian legal representative, no laboratory testing required but technical documentation review is required.  
GOST-R Certificate of Conformity (CoC): Voluntary certification, requires laboratory testing + factory audit, valid for 1/3/5 years (5-year validity requires annual supervision).
3. Key Standards  
High-voltage transformer compensators: Must comply with GOST R 52719-2007 (General Requirements for Electrical Equipment), GOST 1516.3-96 (Insulation Strength), etc.  
4. Process and Documents  
Process: Application → Document Review → Sample Testing (if applicable) → Local Representative Signature and Registration → Certificate Issuance.
Documents: Russian application form, ISO 9001 certificate, technical specifications, circuit diagrams, test reports (e.g., CE/IECEx).  
5. Labeling Requirements  
Must affix the GOST-R mark (minimum 5mm) and Russian-language information.  
II. Kazakhstan GOST-K Certification
1. Regulatory Basis  
Mandatory certification scope: High-voltage transformer compensators must obtain GOST-K certification in accordance with Kazakhstan Government Regulation No. 367 (2005). Some products may also require EAC certification.  
2. Certification Types  
GOST-K Certificate of Conformity (CoC): Requires laboratory testing + factory audit, valid for 1/3 years (3-year validity requires annual supervision).
Batch Certificate: Valid only for specific contract batches, no factory inspection required.  
3. Key Standards  
References Russian GOST standards (e.g., GOST R 52719-2007) and Kazakhstan supplementary requirements.  
4. Process and Documents  
Process: Application → Testing (local laboratory) → Factory inspection (if applicable) → Certificate issuance.
Documents: Kazakh/Russian technical documents, ISO 9001 certificate, import contract.
5. Labeling Requirements  
Must include the GOST-K mark and Kazakh/Russian language information.  
III. Kyrgyzstan GOST-KG Certification  
1. Regulatory Basis  
Mandatory certification scope: High-voltage current transformers and compensators must comply with GOST-KG standards and Eurasian Economic Union technical regulations (e.g., TR CU 004/2011).
2. Certification Types  
GOST-KG Certificate of Conformity (CoC): Sample testing + factory audit required, valid for 1–5 years.  
GOST-KG Declaration: Some products may be self-declared, but high-voltage equipment typically requires mandatory certification.  
3. Key Standards  
References to the IEC 62271 series (high-voltage switchgear) and local standards.  
4. Process and Documents
Process: Application → Testing (mutually recognised laboratory) → Factory inspection (if applicable) → Certificate issuance.  
Documents: Russian/Kyrgyz technical documents, ISO 9001 certificate, CE/GOST-R test reports.  
5. Labelling Requirements  
GOST-KG mark and Russian/Kyrgyz language labels must be affixed.
IV. Comparison Summary of Three-Country Certification
Project    Russian GOST-R    Kazakh GOST-K    Kyrgyz GOST-KG
Legal Basis    Decree No. 2425, Decree No. 982      Government Regulation No. 367   TR CU 004/2011, etc.
Certification Type    DoC (mandatory)/CoC (voluntary)    CoC/single batch    CoC/declaration
Validity Period    1/3/5 years    1/3 years    1–5 years
Language Requirements    Russian 14    Russian/Kazakh    Russian/Kyrgyz
Local Representative    Russian legal entity required    Kazakhstan agent required    Kyrgyzstan agent required
Relationship with Other Certifications    Not applicable to EAC    May be parallel with EAC    May be parallel with EAC
V. Recommendations
Plan ahead: The certification process typically takes 1–3 months, so allow sufficient time.
Local Agent: Applications must be submitted through a local legal entity or authorised representative in all three countries.
Testing Mutual Recognition: Existing CE/IECEx/GOST-R reports may reduce the need for duplicate testing.
Regulatory Updates: Monitor annual revisions to technical regulations in all three countries (e.g., Russian Federal Law No. 2425).
For specific solutions, it is recommended to contact professional institutions (e.g., Shanghai Jiheng Industrial).