OEM Outdoor High Voltage SF6 Ring Main Unit
Specifications
1. Modular design
2. Manufacure&ISO9001
3.all insulated and full-sealed
4.good quality and competitive price
Outdoor High Voltage SF6 Ring Main Unit
Description & Application
HXGN series ring main unit, a common tank SF6 gas insulated metal-enclosed switchgear, is composed of load break switch unit, load break switch fuse combination unit, circuit breaker unit, vacuum circuit breaker unit and bus bar inlet line unit. It is widely used in the distribution substation and box-type substation of urban residence districts, high-rise building, large scale public buildings, enterprises and so on.
Technical Parameter & Detail Show
Technical Parameter
| No. | Name | Unit | Value |
| 1 | Rated voltage | kV | 12~24 |
| 2 | Rated current | A | 630 |
| 3 | Rated frequency | Hz | 50 |
| 4 | Rated on-load breaking current | A | 630 |
| 5 | Rated closed circuit breaking current | A | 630 |
| 6 | Rated short-circuit breaking current | kA | 6.3 |
| 7 | Rated cable charging breaking current | A | 10 |
| 8 | Rated power frequency insulation withstand voltage (arc extinguish chamber/isolation fracture) | kV | 42/48 |
| 9 | Rated lightning impulse withstand voltage (arc extinguish chamber/isolation fracture) | kV | 75/85 |
| Rated short-time withstand current | kA | 16(20) | |
| 10 | Duration of rated short-circuit | S | 4 |
| 11 | Rated peek withstand current | kA | 40(50) |
| 12 | Rated short-circuit current | kA | 40(50) |
| 13 | Mechanical endurance | time | 10000 |
| 14 | Rated daylight | mm | 7±1 |
| 15 | Vaccum arc extinguish overtravel | mm | 3+1-0.5 |
| 16 | Average closing speed(arc extinguish chamber) | m/s | 0.7±0.3 |
| 17 | Average opening speed(arc extinguish chamber) | m/S | 1.1±0.3 |
| 18 | Three-phase closing synchronization | m/s | ≤5 |
| 19 | Rated contact pressure | N | 800±100 |
| 20 | Closing arc extinguish chamber contact bounce | ms | ≤3 |
| 21 | Isolation fracture daylight | mm | 200 |
| 22 | Main loop resistance | μ Ω | ≤200 |
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