I-AZ1 (C-GIS) "Fully Insulated, Fully Sealed and Intelligent" Switchgear is an indoor device with three-phase AC 50Hz and rated voltage of 3.6-24kV. It is used for distribution and acceptance of electric energy in customer substations and main substations, for protection and control of electrical facilities in power plants and substations of industrial and mining enterprises, and for frequent operation. Places. It has two forms: fixed unit combination type and flexible expansion type. It is not only suitable for the requirements of network node or user terminal, but also for the flexible use of compact switchgear in various secondary substations. It will have wide application prospects in many fields such as power system, industrial and mining enterprises, railway transportation and so on.
I-AZ1 (C-GIS) series switchgear is novel in structure and compact in layout. Unit modules are extended through external insulated buses as shown in Figure 1. All live components are placed in stainless steel chamber and completely sealed; the whole switchgear is not affected by external environmental conditions to ensure the reliability of equipment operation and personal safety, and to achieve maintenance-free; by choosing extensible busbar, it can achieve arbitrary combination and achieve full modular design; and the extended busbar is completely absolute. The edge and shield ensure high reliability and safety, and the intelligent control can be realized by monitoring unit and computer integrated protection device during the operation of the equipment.
| No | Name | Unit | numerical value | |||||
| 1 | Rated voltage | kV | 12 | 24 | ||||
| 2 | Rated current | A | 630 | 1250 | 630 | 1250 | ||
| 3 | Rated Frequency | Hz | 50 | |||||
| 4 | icw | kA | 25 | 31.5 | 20 | 25 | ||
| 5 | Rated short circuit duration | s | 4 | |||||
| 6 | Rated peak tolerable current | kA | 63 | 80 | 50 | 63 | ||
| 7 | Rated short circuit breaking current | kA | 25 | 31.5 | 20 | 25 | ||
| 8 | Rated short circuit closing current | kA | 63 | 80 | 50 | 63 | ||
| 9 | Rated short-term withstand current of Disconnector | kA | 25 | 31.5 | 20 | 25 | ||
| 10 | Rated short circuit duration of Disconnector | s | 4 | |||||
| 11 | Rated peak withstand current of Disconnector | kA | 63 | 80 | 50 | 63 | ||
| 12 | Rated short-term withstand current of grounding switch | kA | 25 | 31.5 | 20 | 25 | ||
| 13 | Rated short circuit duration of grounding switch | s | 4 | |||||
| 14 | Nominal Peak Tolerance Current of Grounding Switch | kA | 63 | 80 | 50 | 63 | ||
| 15 | 1 min rated short-term power frequency withstand voltage | Interphase and relative | kV | 42 | 50 | |||
| Isolation fracture | 48 | 50 | ||||||
| 16 | Rated lightning impulse withstand voltage | Interphase and relative | kV | 75 | 125 | |||
| Isolation fracture | 85 | 125 | ||||||
| 17 | Mechanical life | Circuit breaker | 次 | 20000 | 20000 | |||
| Isolating switch | 2000 | 2000 | ||||||
| Grounding switch | 2000 | 2000 | ||||||
| 18 | Rated main circuit resistance (between upper and lower bushing) | μΩ | ≤170 | ≤70 | ||||
| 19 | Rated voltage of auxiliary circuit | V | DC、AC220, DC、AC110 | |||||
| 20 | 1 min power frequency withstand voltage of auxiliary circuit | V | 2000 | |||||
| 21 | Rated inflation pressure (gauge pressure at 20 C) | MPa | 0.05 | |||||
| 22 | Annual leakage rate of SF6 gas | ≤0.1% | ||||||
| 23 | Air chamber protection grade | IP67 | ||||||
| 24 | Classification of cabinet protection | IP4 | ||||||
