A detailed comparison and analysis of the certification requirements and processes for high-voltage transformers 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 transformers (voltage exceeding 1 kV) must obtain GOST-R certification, in accordance with Russian Government Decree No. 2425 (23 December 2021) and Decree No. 982 (1 December 2009).
Not applicable to EAC certification: High-voltage electrical equipment is not within the scope of the Customs Union EAC certification and must obtain a GOST-R Declaration of Conformity (DoC).
2. Certification Types  
GOST-R Declaration of Conformity (DoC): High-voltage transformers must undergo mandatory certification, submitted by a Russian legal representative, without laboratory testing but requiring technical document review.
GOST-R Certificate of Conformity (CoC): Voluntary certification requiring laboratory testing + factory audit, valid for 1/3/5 years (5-year validity requires annual supervision).
3. Key Standards  
High-voltage transformers: Must comply with GOST R 52719-2007 (General Requirements for Power Transformers), GOST 1516.3-96 (Insulation Strength), GOST 7746-2015 (Oil-immersed Transformers), etc.  
4. Process and Documents  
Process:  
Submit Russian-language application form and technical documents;
Certification body reviews documents (sample testing or factory inspection may be required);  
Local representative signs and registers, certificate issued.  
Documents: Russian application form, ISO 9001 certificate, technical specifications, circuit diagrams, test reports (e.g., CE/IECEx).  
5. Labeling Requirements  
Products must be affixed with the GOST-R mark (minimum 5mm) and Russian-language information.  
II. Kazakhstan GOST-K Certification
1. Regulatory Basis  
Mandatory certification scope: High-voltage transformers must obtain GOST-K certification in accordance with Kazakhstan Government Regulation No. 3 (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, including testing of electrical performance, insulation strength, etc.
4. Process and Documentation  
Process:  
Submit application to the Kazakhstani certification body;  
Sample testing (local laboratory);  
Factory audit (if applicable);  
Certificate issuance.  
Documents: Kazakh/Russian technical documentation, 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 transformers 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): Requires sample testing + factory audit, valid for 1–5 years.
GOST-KG Declaration: Some products may be self-declared, but high-voltage transformers typically require mandatory certification.  
3. Key Standards  
References to the IEC 62271 series (high-voltage switchgear) and local standards, with parameters matching the power grid (380V/50Hz three-phase).
4. Process and Documentation  
Process:  
Submit an application to the certification body;  
Testing (mutually recognised laboratories);  
Factory inspection (if applicable);  
Certificate issuance.  
Documentation: Russian/Kyrgyz technical documents, ISO 9001 certificate, CE/GOST-R test reports.  
5. Labelling Requirements  
Must affix the GOST-KG mark and Russian/Kyrgyz label 910.
IV. Comparison and 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 312    Russian/Kazakh 78    Russian/Kyrgyz
Local Representative    Requires Russian legal entity    Requires Kazakhstani agent    Requires Kyrgyzstani agent
Relationship with Other Certifications    Not applicable to EAC    May be conducted concurrently with EAC    May be conducted concurrently with EAC
V. Recommendations
Plan Ahead: The certification process typically takes 1-3 months; sufficient time should be allocated.
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 a professional institution (e.g., Shanghai Jiheng Industrial).