GAE GLX series, SF6 Insulated Ring Main Unit Up to 24kV
GAE GLX series, extendbale, SF6 insulated ring main unit switchgear with rated voltage of 24 kV.
GENERAL DESCRIPTION
GAE GLX series ring main unit is an extensible, SF6 insulated switchgear, with rated voltage of 12&24 kV. All its HV live parts are contained in air tight gas tank, which is made from stainless steel of 3mm.
The whole switching assembly is SF6 insulated, and free from any external influence, ensuring it great reliability of service and maintenance free.
By plug in type busbar extention, GAE GLX series can be free combination and full modularization.
The busbar extention has passed type test for power and thermal stability and is fully insulated and shielded exhibiting high reliability and safety.
GAE GLX series ring main unit is suitable for all MV network up to 24kV, all compact power station, power distribution substation in all important industries, such as petrol chemical industry, metallurgical and mining industries and all transformer substation and wind power system.
SPECIFICATION for GAE GLX series | ||||
| Description | Unit | GAE GLX12 | GAE GLX24 | |
| Rated voltage | kV | 12 | 24 | |
| Power frequency withstand | Phase to phase/earth | kV | 42 | 50, (65)* |
| voltage (1min) | Between open contacts | kV | 48 | 64, (79)* |
| Impulse withstand | Phase to phase/earth | kV | 75, (95)* | 95, (125)* |
| voltage | Between open contacts | kV | 85, (110)* | 110, (145)* |
| Rated frequency | Hz | 50, 60 | 50, 60 | |
| Rated current | A | 630 | 630 | |
| Rated short circuit breaking current | kA | |||
| Rated short time withstand current | kA/s | 20/3 | ||
| (20/4), 25/1)* | 20/3, (20/4)* | |||
| Rated peak withstand current | kA | 50, (63)* | 50 | |
| Rated short circuit making current | kA | 50, (63)* | 50 | |
| Rated transfer current | A | |||
| Rated active load breaking current | A | 630 | 630 | |
| Rated close loop breaking current | A | 630 | 630 | |
| 5% rated active load breaking current | A | 31.5 | 31.5 | |
| Rated operating sequence | ||||
| Mechanical lifetime | Ops. | 5000 | 5000 | |
| Electrical lifetime | E3 | E3 | ||
| Thickness of stainless steel | mm | 3.0 | ||
| SF6 rated pressure | kPa | 30 (at 20°C, 101.3kPa) | ||
| Leakage rate per year | ≤ 0,02% | |||
| Water treatment test | 12kV 24 hours (at 30 kPa under water) | 24kV 24 hours (at 30 kPa under water) | ||
| Internal Arc test | 20kA1s | |||
| Protection degree | Gas tank | IP 67 | ||
| Fuse holder | IP 67 | |||
| RMU | IP 4x | |||