DQS-12/24 Series
SF6 Gas Insulated Ring Main UnitDQS-12/24 SF6 Gas Insulated Ring Main Unit adopt advanced design concept and manufactured by advance...
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SF6 Gas Insulated Ring Main Unit
DQS-12/24 SF6 Gas Insulated Ring MainUnit adopt advanced design concept and manufactured by advanced processingtechnology and production equipment. With the features of small volume, lowcost, easy operation and high reliability it is suitable for electric system,industrial enterprises, high-rise buildings, cubic type substations and outdoorRMUs.
Features
1 All high voltage live parts are sealed in low pressure SF6 gas.
2 Adopt modular design. Differentmodule combinations realize different main wiring and combination pattern canbe changed according to the requirements. 3 Simple but efficient interlock can prevent maloperation.
4 Adopting interface insulation structure to realize plate grafting of highvoltage parts and extension of cabinet.
5Adopting deep penetration laser welding and Helium leak detection process toensure gas tank tightness.
6Adopting robot stud welding process to ensure the welding precision
7Reliable operating mechanism and long life span.
Item | Unit | Load switch(C) | Switch-fuse combination（F） | Vacuum circuit breaker（V） |
Rated voltage | kV | 12/24 | 12/24 | 12/24 |
Rated current | A | 630 | 125* | 630 |
Rated power-frequency withstand voltage(1min) | kV | 12kV:42/48kV; 24kV:50/60kV | ||
Rated lightning impulse withstand voltage | kV | 12kV:75/85kV;24kV:125/145 | ||
Rated frequency | Hz | 50 | ||
Rated active load breaking current | A | 630 |
|
|
Rated short-circuit breaking current | kA |
| 31.5* | 20 |
Rated short-circuit making current | kA | 50 | 80* | 50 |
Transfer current | A |
| 12kV:1750A 24kV:1400A |
|
Rated short-time withstand current (4s) | kA | 20 |
| 20 |
Rated peak withstand current | kA | 50 |
| 50 |
Gas leakage rate |
| <0.01% | ||
Protection degree: Gas tank/cabinet |
| IP67/IP4X | ||