RMU Ring Network Cabinets Use 40.5kV Indoor AC High Voltage 3P SF6 Load Break Switch
RMU Ring Network Cabinets Use 40.5kV Indoor AC High Voltage 3P SF6 Load Break Switch
Application
SF6 load break switch is a multi-functional medium-voltage switchgear integrating load switch, grounding switch and isolation switch. It is filled with SF6 gas in a fully sealed epoxy resin enclosure with reinforced structure, and the above three functions are realized with a small amount of components, thus ensuring the quality and reliability of the product, which has excellent insulation and breaking capacity and can guarantee the equipment under normal conditions Safe operation for 20 years under normal conditions.
The switching speed is determined by the spring and has nothing to do with the manual speed. After the addition of automatic instrumentation, remote sensing and remote control can be realized.
Specifications
Features
1. Open and close the load current and load current
For splitting and closing load current, closed loop current, no-load transformer and cable charging current, closing and short circuit current
2.Withstand short-circuit current
The load switch equipped with grounding switch can withstand short-circuit current
3. Release device with high sectional capacity fuse
With segment phase tripping function, it can cut off the short-circuit current and be used to protect the equipment
4. Interrupting device of interrupting tube composition
Use the spindle to drive the piston to compress the air when the switch is opened, so that the compressed air is ejected from the nozzle to blow out the arc. In the closed state can pass the normal working current and short-circuit current.
Drawing
Parameter
| No | Item | Unit | Parameter |
| 1 | Rated voltage | kV | 40.5KV |
| 2 | Rated frequency | Hz | 50 |
| 3 | Rated current | A | 630 |
| 4 | wet
1min Power frequency withstand voltage dry |
kV
kV |
95
95 |
| 5 | Lightning impulse withstand voltage | kV | 185 |
| 6 | Rated short circuit breaking current (peak) | kA | 25 |
| 7 | Rated activeload and close circuit breaking current | A | 630 |
| 8 | Rated transferring current | A | 630 |
| 9 | Rated short circuit making current (peak) | kA | 63 |
| 10 | Rated cable(line) charging breaking current | A | 10 |
| 11 | Cable charge breaking current in earthing fault | A | 30 |
| 12 | Rated withstand current (peak) | kA | 63 |
| 13 | Short time withstand current (2s) | kA | 25 |
| 14 | Mechanism life | time | 10000 |
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