Product family

Primary MV Switchgear

Air-insulated metal-enclosed withdrawable switchgear for 12, 24 and 40.5 kV distribution.

Available platforms

Explore available products

Select a platform to review its applications, technical reference data, dimensions, resources and related products.

Explore the evidence

Reports for identified models in this family

See the reported model and rating before opening a document. A family association is a navigation aid, not evidence that a report covers every product shown here.

English guide cover for report 25K133K40078
Test report

12 kV withdrawable metal-enclosed switchgear

Original reported model
KYN28A-12/1250-31.5
Report / year
25K133K40078 · 2025
Recorded reference
Rated voltage: 12 kV; Rated current: 1250 A; Frequency: 50 Hz; Main Icw: 31.5 kA / 4 s; Main peak: 80 kA; IAC: AFLR 31.5 kA / 1 s; Enclosure: IP4X / IK10; internal compartments and circuit-breaker door open IP2X
Standards stated in the report
GB/T 3906-2020 · DL/T 404-2018 · GB/T 1984-2024 · DL/T 402-2016 · GB/T 1985-2023 · DL/T 486-2021 · GB/T 11022-2020 · DL/T 593-2016 · GB/T 7261-2016
Corresponding range: ML-AIS1224 →
What this report covers
  • This is an independently prepared English reading guide, not an English report issued by the test laboratory. The complete Chinese original follows unchanged and governs interpretation.
  • Results apply to the submitted sample, stated configuration, test conditions and listed tests only. They are not a blanket certificate for all Minglang products or all project requirements.
  • Marketing product names identify a website range; the source report model, ratings and configuration must be matched before the evidence is used for an order.
  • Applies to the 12 kV / 1250 A / 31.5 kA configuration only. This report does not substantiate 24 kV or 40.5 kV variants.
  • The component circuit-breaker report 25K133K40079 is separate evidence; it does not replace assembly verification.
  • Source p5 lists earthing-circuit duration 2 s, while summary p7 prints 4 s. Obtain clarification before using that particular earthing rating. Main-circuit and IAC values above are separately traceable.
  • Source p9 identifies different samples for different tests. This is not a claim that every test was performed on one physical cabinet.

4 guide pages + 335 source pages · 32.3 MB