2026/05/25 13:52:10
Recently, our self-developed 24kV eco-friendly gas insulated ring main unit has successfully passed all type tests conducted by TUV Rheinland Germany. This indicates the product has reached international advanced standards in safety, reliability and environmental performance, granting Juhonkia power equipment a vital credential for steady expansion into the global market.
Authoritative Global Certification, Demonstrating Superior Quality
As a world-leading third-party testing, inspection and certification body, TUV Rheinland enjoys extensive credibility and recognition across the global market. Complying strictly with IEC 62271 international standards, Juhonkia's 24kV eco-friendly gas insulated ring main unit delivers outstanding performance in key indicators including insulation capability, mechanical properties, air tightness and internal arc protection.
The arc protection rating of its breaker and cable compartments reaches A FLR 20 kA 1S, with the annual gas leakage rate kept below 0.01%, achieving industry-leading safety and stability. The product successfully passed rigorous tests including 20,000 breaker switching operations, 5,000 disconnector switching operations, 5,000 earthing switch switching operations and 30 short-circuit breaking tests. Its partial discharge stays below 20pC under 1.2 times rated voltage with steady overall performance. Temperature rise test proves that long-term operation under 1.1 times rated current generates far lower component temperature rise than standard limits, presenting excellent heat dissipation performance.
Leading Eco-friendly Technology, Empowering Green Power Grid
The biggest technological highlight of this ring main unit is that dry air completely replaces traditional SF6 gas, achieving zero greenhouse gas emissions and fully meeting the green transformation demands of the power industry under global dual-carbon goals.
Formulated dry air mainly composed of nitrogen and oxygen features eco-friendliness and improved insulation performance. Boasting compact structure and small overall size, the equipment saves installation space and suits diverse complex scenarios such as urban power distribution networks and industrial parks.
Deepen technological innovation, forge domestic strength
As a national-level specialized, sophisticated, distinctive and innovative "little giant" enterprise, Juhonkia Electric takes technological innovation as its core development strategy.
The company has established a comprehensive ring main unit product portfolio covering voltage levels from 12kV to 72.5kV, featuring SF6 gas insulation, solid insulation, eco-friendly gas insulation and atmospheric air insulation technologies. It ranks among China's first enterprises that have achieved full coverage of multiple technical routes and mass supply. The TUV Rheinland certification of the 24kV eco-friendly product marks another major breakthrough in the eco-friendly medium-voltage power distribution sector, following international recognition obtained by its 40.5kV and 72.5kV product series.
This certification acknowledges Juhonkia's product quality and serves as an international assessment of the overall strength of China's intelligent electrical equipment manufacturing industry. With access granted to the global market, Juhonkia will further accelerate globalization and deliver superior solutions to support intelligent upgrading and low-carbon transformation of power grids worldwide.
