HXGN*12 SF6 ALL Insulated Metal-enclosed Switchgear（Abbreviation as ring-network cabinet） three-phase ac rated voltage up to and including 12 kv, frequency 50 hz indoor box-type metal-enclosed switchgear, applicable to factories, residential area, high-rise buildings, schools and parks and other places of power distribution system, as acceptance, distribution, and protect the safe operation of the electrical equipment of electric power.Ring network cabinet in accordance with the requirements of GB 3906 and DL/T404, have “five prevention” function, the advantages of small size, high reliability, etc.And through the national electrical products quality supervision and inspection center all the type test.
| Project content | Unit | load-break switch | Combined Electrical Equipment | Circuit breakers | ||
| Rated voltage | kV | 12 | 12 | 12 | ||
| Rated current | A | 630 | 125 | 630 | ||
| Rated frequency | Hz | 50 | 50 | 50 | ||
| Insulation level | 1min Power Frequency Voltage-Withstand | Alternate and relative | kV | 42 | 42 | 42 |
| Isolation between fracture | kV | 48 | 48 | 48 | ||
| Impulse withstand voltage | Alternate and relative | kV | 75 | 75 | 75 | |
| Isolation between fracture | kV | 85 | 85 | 85 | ||
| Partial discharge level | pC | ≤20 | ||||
| Switch ability | Rated short-time tolerant current | kA | 20 | 20 | ||
| Rated short-time withstand current duration | s | 4 | 4 | |||
| Rated Peak-Peak tolerant current | kA | 50 | 50 | |||
| Rated short circuit breaking current | kA | 熔絲值 | 20 | |||
| Rated short-circuit current | kA | 50 | 50 | |||
| Transfer Current | A | 1500 | ||||
| SF6 gas leakage rate | % | ≤0.05 | ≤0.05 | ≤0.05 | ||
| Mechanical operating life | time | 5000 | 5000 | 10000 | ||
| Protection level of whole cabinet | IP4X | IP4X | IP4X | |||
