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.