Descrição:
• Classification Series :High Voltage Switchgear • Product Name :HXGN-12 Box-type fixed metal closed-loop network switchgear(550 wide) • Product Overview: The outline structure of the product is referred to as diagram 1 and diagram 2; the installation dimension is referred to as diagram3. This ring network type cabinet makes air as the insulating medium...HXGN□-12(SF6) Unit type AC metal-enclosed ring main unit(hereafter refer to as ring net cabinet) is a new generation of high-pressure electric appliance product designed and developed independently by our own company according to the requirement of the domestic agricultural electricity and the city net transformation after introduction of overseas advanced technology. Each technical performance index completely reaches the IEC298 and GB3906 standard.
The loop-net cabinet s main switch, the operating mechanism and the components is made of the Corporation original piece or the SFL-12/24 switch equipment imported overseas and ass-embled at home. We can also install the Corporation original piece of HAD/US type SF according to the request of users. The circuit breaker or the VD4-Svacuum circuit-breaker divide into two kinds: be operated manually and electrically according to the operating mode.
The cabinet body is riveted after processed by numerical control machine tool with reliable mechanical interlocking and the misoperating prevention function. The protection grade reaches IP3X.This product has the remarkable characteristics such as the small volume, light weight, artistic appearance, simple operation, long life, high parameter with no pollution and little maintenance.
Use environmental conditions
1.The altitude should not exceed 2000m.
2.Surrounding air temperature: -25℃ ~+40℃
3.Relative temperature: the daily average value is not higher than 95%, the the monthly average value is nothigher than 90%
4.Surrounding air without caustic gas or ignitable gas, steam and other obvious pollution
5.Without fierce vibration
Model and meaning

Use
HXGN□-12 (SF6) unit type exchange metal ring- net switching equipment, is suitable to exchange 50Hz、12kV , searving as device of receiving and distribution of electrical energy.
The main technical parameters
| Sr. | Content | Unit | Value | ||
| 1 | Rated Voltage | kV | 12 | ||
| 2 | Rated Frequency | Hz | 50/60 | ||
| 3 | Rated Current | A | 630 | ||
| 4 | Max.rated Current of Fuse | A | 125 | ||
| 5 | Rated Short-circuit Breaking
| kA | 31.5(Fuse Group) | ||
| 6 | Rated Peak Withstand Current | kA | 50 | ||
| 7 | Rated Short-time Withstand Current(4s) | kA | 20 | ||
| 8 | Rated Short Circuit Making Current | kA | 50 | ||
| 9 | Grounding Loop | Ratad Short-time Withstand Current(2s) | kA | 20 | |
| Rated Peak Witnstand Current | kA | 50 | |||
| 10 | Power Frequency Withstand Voltage in 1 min | Phase,Earthed | kV | 42 | |
| Isolating Fracture | kV | 48 | |||
| 11 | Lightning Impulse Withstand Voltage(Peak) | Phase,Earthed | kV | 75 | |
| Isolating Fracture | kV | 85 | |||
| 12 | Rated Active Load Breaking Current | A | 630 | ||
| 13 | Rated Closed Loop Breaking Current | A | 630 | ||
| 14 | Rated Cable-charging Breaking Current | A | 10 | ||
| 15 | Rated Transfer Current | A | 1750 | ||
| 16 | SF6 Gas Pressure(Relative Pressure at 20℃) | MPa | 0.045 | ||
| 17 | Internal Arc Duration Test(0.5s) | kA | 31.5 | ||
| 18 | Mechanical Life | Load Switch | Times | 5000 | |
| Earth Switch | Times | 2000 | |||
| 19 | Degrees of Protection | IP | IP4X | ||
| 20 | Operation Mode | 一 | Manual/Electric | ||
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