KYN28A-12 Switchgear Passes Full IEC 62271-200 Type Test

HARRL Group is pleased to announce that our flagship KYN28A-12 metal-clad withdrawable switchgear has successfully completed the full type-test programme defined in IEC 62271-200 — the international standard for AC metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to 52 kV.

The eight-week test campaign was independently witnessed and certified by KEMA Laboratories in the Netherlands, widely recognised as the most stringent third-party power testing facility in the world. The certificate covers the full set of mechanical, dielectric, temperature-rise, and short-circuit performance criteria required for Tier-1 utility procurement in Europe, the Middle East, and South-East Asia.

Highlights from the test campaign

• Rated short-time withstand current: 40 kA for 4 seconds — verified across three consecutive test sequences without contact welding or insulation damage.
• Internal arc classification: IAC AFLR 40 kA / 1 s — flap venting confirmed safe on all four accessible sides of the enclosure.
• Lightning impulse withstand: 95 kV (peak) on the main circuit and 75 kV across the open isolating distance.
• Mechanical endurance: 10,000 CO operations on the withdrawable VCB carriage with no measurable change in contact resistance.
• Temperature rise: all measurement points stayed within 65 K above ambient at the full 4000 A continuous current rating.

Why this matters for our customers

For utility and EPC buyers, an independently witnessed IEC 62271-200 type test is no longer a "nice to have" — it is a non-negotiable prerequisite in most European, GCC, and ASEAN tender packages. By securing certification from KEMA specifically, the KYN28A-12 now qualifies for tenders that explicitly name KEMA, ASTA, or CESI as accepted laboratories, including a number of framework agreements that previously sat outside our reach.

Equally important, the 40 kA / 4 s rating extends our addressable market into 110 kV / MV step-down substations where short-circuit levels at the secondary busbar can exceed 31.5 kA — the practical rating ceiling of much of the lower-tier product on the market today.

“Designing for KEMA isn't about adding margin — it's about controlling the failure mode. Every weld, every busbar bend, every gasket compression force was modelled and re-modelled until we were confident the arc would vent exactly where the standard requires it to. The certificate is the proof, but the real work was the eighteen months of design iteration that came before.”

What comes next

The certified KYN28A-12 is available for order with immediate effect, with a typical lead time of 10–12 weeks depending on configuration. Customers requiring custom protection schemes (ABB Relion, Siemens SIPROTEC, or SEL relay packages) should specify at the quotation stage. The full test report and KEMA certificate are available under NDA on request through your regional sales contact.

Engineering is already preparing the next test campaign — a 50 kA / 3 s short-circuit extension and a Loss-of-Service-Continuity Class LSC2B verification — scheduled for Q4 2026 at the same KEMA facility.