Zeno Electric
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The GRM type fully sealed completely insulated ring network switch equipment, also known as Gas Insulated Switchgear (GIS) or Ring Main Unit (RMU), is a cutting-edge modular switch equipment designed and developed for modern power distribution networks. This innovative product combines the best features of both domestic and foreign switchgear technologies.
Featuring a compact design, the GRM type switch equipment is housed in a gas tank, which can accommodate up to 6 units without any line or outlet connections. Each unit is equipped with its own unique functionality, ensuring optimal performance and flexibility. In cases where the system requires more than 6 units, multiple gas tanks can be connected using extended bus bars.
Safe ring/plus GRM type SF6 gas insulated ring main unit integrates with an SF6 infill cabinet which gathers LBS, VCB, Fuse, ES, DS, etc. By the perfect integration of stationary type and flexible expansion, this compact close metal switchgear is suitable for end-users or network nodes. It meets the requirements of all kinds of switching substations, cabinet-type transformer substations, and cable branch cabinets, featuring a compact structure, safety, longevity, and maintenance-free operation.
| No. | Item | Unit | Parameters | |||
|---|---|---|---|---|---|---|
| 12KV | 24KV | |||||
| 1 | Rated Voltage | KV | 12 | 24 | ||
| 2 | Rated Current | A | 630 | 630 | ||
| 3 | Rated Frequency | HZ | 50/60 | 50/60 | ||
| 4 | Rated Power Frequency Withstand Voltage 1 min | KV | 48 | 50 | 65 | |
| 5 | Rated Lightning Impulse Withstand Voltage | KV | 85 | 125 | 125 | |
| 6 | Rated Short-time Withstand Current | KA/S | 20/4 | 25/4 | 20/4 | 20/4 |
| 7 | Rated Breaking Current | KA | 20 | 25 | 16/20 | 20 |
| 8 | Rated Short Circuit Making Current (Peak) | KA | 50 | 62.5 | 40/50 | 50 |
| 12/24kV complies with: | ||||||
| - IEC 62271-200(2011), IEC 62271, IEC 62271-100, IEC 62271-102(2012), IEC 62271-103(2011), IEC 62271-305, IEC 60529 | ||||||
| - GB 1984-2003, GB 3906-2006, GB 1985-2004, GB 3804-2004, GB/T 11022-1999 | ||||||
With extensive industrial and exporting experience, our products are built under high-level manufacturing standards. Over the years, we have successfully supplied switchgear products to numerous markets across Asia, Europe, the Middle East, America, and Africa.
We specialize in GIS (Gas Insulated Switchgear) and Ring Main Units (RMU), offering ISO9001 and CCC certified products designed for high safety, shock resistance, and vertical installation compatibility.
Normally, we provide a 12-month standard warranty period starting from the deployment phase.
We accept T/T, West Union, and other flexible payment options based on request requirements.
Please send us your detailed technical specifications and electrical system requirements so we can prepare an optimized solution.
Yes, our designs have successfully passed international standard type tests in both Europe and China.
The products are manufactured to fully comply with international standards including IEC 62271-200, IEC 60529, and GB national standard frameworks.
Yes. GRM type RMU supports both extensible and non-extensible configurations from the top or side using modular extended bus bars.
