GOST‑K (ST‑RK) Certification for High‑Voltage Switch‑Gear & Distribution Panels (＞1 kV, Kazakhstan Market)

1. Governing‑Regulations & Core Principle

Responsible authority

KazStandard (Committee for Technical Regulation and Metrology of Kazakhstan).

Legal‑basis

Kazakhstan technical regulation for high‑voltage equipment under government Order №435‑НҚ, which mandates compulsory certification for HV‑equipment above 1000 VҚазақ....

Voltage dividing‑line rule:

LV switch‑cabinets ≤1000 V: only EAC‑DoC / EAC‑CoC under TR‑CU‑004‑2011 is valid, GOST‑K is unnecessary.

HV switch‑gear＞1 kV (6 kV‑10 kV‑35 kV‑110 kV KRU, KSO, complete‑set distribution cabinets): out‑of‑scope of TR‑CU‑004‑2011. EAC‑certificate is completely invalid for Kazakhstan customs‑clearance and national‑grid tender; GOST‑K (ST‑RK) certification is mandatory.

Important limitation: Russian GOST‑R PCT certificate cannot replace GOST‑K in Kazakhstan. Russian GOST‑R‑IEC‑62271‑1 test‑reports serve merely as reference documents; key‑items still require testing by Kazakhstan‑approved labs.

2. Mandatory Adopted Standards for HV Switch‑Cabinets

Main safety standard: ST‑RK‑IEC‑62271‑1‑2019 (equivalent to IEC‑62271‑1‑2017), together with GOST‑14695‑2014 for high‑voltage cubicles.

Climate‑test standard: GOST‑15150‑69 (XL‑50℃ low‑temperature test is compulsory for projects in northern Kazakhstan).

EMC‑standard for shielded switch‑gear: GOST‑CISPR‑11‑2015 covering radiated‑emission and immunity‑tests.

Fire‑safety requirement: GOST‑31565‑2012 for indoor substation‑type switch‑cabinets.

Additional grid‑project requirement: seismic‑vibration test complying with Kazakhstan local seismic‑standard for state‑grid projects.

If CT‑PT instrument transformers are installed inside switch‑cabinets, separate Kazakhstan state‑metering registration is required besides GOST‑K certificate.

3. Two GOST‑K Certification Schemes for HV Switch‑Gear

Scheme‑1: Single‑batch Certificate (Партийный сертификат)

Validity: Valid only for one specific export contract with fixed quantity, invalid for subsequent shipments.

Requirements:

Document‑review mode, factory‑audit is waived completely;

Submit commercial documents (contract, pro‑forma invoice), Russian‑language technical‑dossier and available type‑test‑reports; partial‑test‑items may be exempted after assessment by certification‑body.

Best‑fit scenario: One‑off project‑based export for Kazakhstan clients.

Lead‑time: 4‑6 weeks, relatively lower‑cost.

Scheme‑2: Serial‑production long‑term GOST‑K CoC Certificate (1‑year or 3‑year validity)

For regular mass‑supply for Kazakhstan national‑grid and long‑term repeated export business.

Mandatory‑pre‑conditions:

Complete full‑set type‑tests for HV switch‑gear in Kazakhstan‑authorized labs (such as KAZTEST) complying with ST‑RK‑IEC‑62271‑1‑2019.

ISO9001‑2015 certificate is a prerequisite.

Factory‑audit rules:

1‑year certificate: one Kazakhstan‑qualified expert conducts on‑site factory‑audit in China.

3‑year certificate: two authorized experts perform factory‑audit; annual surveillance‑audit plus yearly random‑sample‑test are required throughout the whole validity period.