High Voltage Switchgear
01
HXGN-24 Fixed-Type Metal-Clad Ring Main Switchgear (RMU)
Features
● Increasing main transformer capacity to enhance substation power supply capability.
● Improving power transmission capacity of distribution lines and reducing the number of distribution lines.
● Expanding the power supply radius of medium-voltage lines.
● Enhancing power supply quality of medium-voltage grids.
● Reducing power loss in medium-voltage grids.
● Saving non-ferrous metals and land resources.
Operating conditions
● Altitude: ≤1000m
● Ambient temperature: -35°C to +40°C, maximum daily temperature difference 25°C;
● Relative humidity: Daily average ≤95%, monthly average ≤90%;
● Seismic resistance: Seismic intensity grade 8;
● System rated frequency: 50Hz;
● SF6 annual leakage rate: ≤0.1%;
● Enclosure protection class: IP3X;
Note: For orders exceeding the above conditions, please consult our company for customization.
Technical specifications
|
No. |
Items |
Unit |
Data |
||
|
1 |
Rated voltage |
kV |
24 |
||
|
2 |
Rated frequency |
Hz |
50 |
||
|
3 |
Rated current |
A |
630 |
||
|
4 |
Load switch-Fuse combination cabinet |
A |
≤100 |
||
|
5 |
Rated short-circuit breaking current |
kA |
31.5 |
||
|
6 |
Rated making current(Peak) |
kA |
50 |
||
|
7 |
Rated thermal stable current |
kA/S |
20/3 |
||
|
8 |
Rated dynamic stable current(Peak) |
kA |
75 |
||
|
9 |
Insulation level | Power frequency withstand voltage | Phase to phase & to ground |
kV/min |
65/1 |
| Fracture |
kV/min |
79/1 |
|||
| Lightning impulse withstand voltage | Phase to phase & to ground |
kV |
125 |
||
| Fracture |
kV |
145 |
|||
|
10 |
Rated active load breaking current |
A |
630 |
||
|
11 |
Rated cable charging breaking current |
A |
25 |
||
|
12 |
Main circuit resistance |
μΩ |
≤300 |
||
|
13 |
Rated transfer current |
A |
870 |
||
|
14 |
Mechanical life |
Times |
Load switch:3000 |
||
|
Earthing switch:2000 |
|||||
|
15 |
Dimensions(W×D×H) |
mm |
600×1195×2000 |
||
Note: The above data is subject to change due to technical improvement.