HXGN-12 ring main unit
HXGN-12 box type fixed metal enclosed switchgear (ring main unit) is suitable for use in AC 50Hz, 10kV networks for breaking loads, short circuits, and closing short circuit currents. This ring main unit is equipped with manual and electric spring mechanisms to operate the load switch, while the grounding switch and isolation switch are equipped with manual operating mechanisms. This product complies with standards such as GB3906.
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main technical parameters
| Rated voltage | 12kV |
|
| Rated current | 630A | |
| Main busbar current | Incoming feeder cabinet | 630A |
| Outgoing feeder cabinet | 125A | |
| Rated short-time withstand current | 20kA | |
| Rated short-circuit duration | 4S | |
| Rated peak withstand current | 50kA | |
| Rated Active load breaking current | 50kA | |
| Closed loop breaking current | 630A | |
| Rated cable charging current | 20kA | |
| Rated short-time withstand current of grounding switch | 20kA | |
| Rated short-circuit duration of grounding switch | 4(2)S | |
| Rated peak withstand current of power switch | 50kA | |
| Rated short-circuit closing current of the power switch | 50KA | |
| 1Min rated power frequency withstand voltage | Phase to phase, relative to ground, vacuum load switch fracture | 42kV |
| Lsolation switch fracture | 48kV | |
| Rated lightning impulse withstand voltage | Phase to phase, relative to ground, vacuum load switch fracture | 75kV |
| Lsolation switch fracture | 85kV | |
| Mechanical life | Vacuum load switch | 10000次 |
| Grounding switch (knife), isolating switch (knife) | 20000 Time | |
| Handover current | 3150A | |
