SF6 fully insulated ring main unit GRM
Categories：Secondary distribution network products
Product Profile ：
The GRM series switchgear is divided into two types: common box type and unit combination type, which can be expanded. The corrosion-resistant shell and perfect sealing determine that it can meet the needs of various occasions. Widely used in indoor and outdoor switch stations, box type substations, residential areas, various office buildings, commercial centers, building factories and other 6-24kV distribution networks.
| Name | Unit | Technical parameters | ||
| Load switch unit GRM-K(C) | Combination electrical unit GRM-T(F) | Circuit breaker unit GRM-V(B) | ||
| Rated voltage Un | kV | 12/24 | ||
| Rated current | Hz | 50 | ||
| Rated frequency | A | 630 | 125 | 630A/1250 |
| Rated load breaking current | A | 630 | 125 | |
| Rated short-time withstand current (effective value) | kA | 25 | ||
| Rated short circuit duration | s | 4 | ||
| Rated peak withstand current | kA | 63 | ||
| SF6 Gas annual leakage rate | 0.01% | |||
30-year maintenance free, unaffected by environmental factors, resistant to condensation, frost, salt spray, pollution, corrosion, UV radiation, small animals, and chemicals, suitable for use in harsh environments; All high-voltage live parts and components are sealed in a low-pressure SF6 gas box, with a compact structure that achieves miniaturization, lightweight, and full insulation; Modular design, with different module combinations to achieve various main wiring, and the combination method can be changed according to user needs to form a circuit switch system; Using silicone connectors to achieve the insertion of high-voltage components and arbitrary expansion of the cabinet; Fully shielded cable inlet and outlet.
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