01
XGN (XGTD5)-(12, 24)40.5 Indoor Gas Insulation Metal-clad Switchgear
General
The product has features of flexible combinations, great safety, complete interlocking logic as well as extendibility, miniaturization and free for maintenance. So that it was commonly used in infrastructure construction for power station, power substation, movable transformer pack, rail traffic, buildings that have the 35kV or below nominal voltage. Especially for some sever environment like high altitude, heavy pollution and high humidity. The product quality assurance is based on researching, developing designing and producing required by quality system and continues to improve. So it is completely complying with the newest version or revised version of following standard, but not limited to them.
Service conditions
a. Ambient temperature: -45 ℃~+40 ℃ the daily average value shall not exceed 35 ℃;
b. Altitude: < 5000m above the sea level;
c. Relative humidity: Daily average< 95%, Monthly average is < 90%;
d. Seismic grade: the seismic intensity shall not exceed grade 8;
e. Inductive electromagnetic interference value of secondary system: not more than 1.6 KV.
Note: If the service environment exceeds the above conditions, please consult with our company.
Technical Parameter
Main technical parameters of switchgear
| ltem |
Unit |
Parameters |
|||
| Rated voltage |
kV |
12 |
24 |
40.5 |
|
| Rated current |
A |
630/1250/1600/2000/2500/3150 |
|||
| Rated frequency |
Hz |
50/60 |
|||
| 1 min Rated power frequency withstand voltage (RMS) | Phase to Phase Phase to earth |
kV |
42 |
65 |
95 |
| Insulation Distance |
48 |
79 |
118 |
||
| Rated Lightning impulse withstand voltage (peak) | Phase to Phase Phase to earth |
kV |
75 |
125 |
185 |
| Insulation Distance |
85 |
145 |
215 |
||
| Rated power frequency withstand voltage of auxiliary crcuit |
kV |
2 |
|||
| Rated short-circuit breaking current(RMS) |
kA |
20/25/31.5/40 |
|||
| Rated short-circuit making current (peak) |
kA |
50/63/80/100 |
|||
| Rated short-time withstand current (4s) |
kA |
20/25/31.5/40 |
|||
| Rated peak withstand current |
kA |
50/63/80/100 |
|||
| Main circuit resistance of each phase |
μ Ω |
Rated current≤1600A,Rc≤220 Rated current≥2000A, Rc≤105 |
|||
| Rated voltage of auxiliary and control circuit |
V |
DC110/220AC220 |
|||
| Rated SF6 gas pressure (20℃) |
MPa |
0.04/0.05 |
|||
| Min SF6 gas pressure (20℃) |
MPa |
0.03 |
|||
| Annual SF6 gas loss rate |
‰ |
≤5 |
|||
|
Degree of Protection |
/ |
HV compartment IP67; LV compartment IP4X |
|||
| Weight |
Kg |
1000~1600 |
|||
Main technical parameters of vacuum circuit breaker
| ltem |
Unit |
Parameters |
|||
| Rated voltage |
kV |
12 |
24 |
40.5 |
|
| Rated current |
A |
630/1250/1600/2000/2500/3150 |
|||
| Rated frequency |
Hz |
50/60 |
|||
| 1 min Rated power frequency withstand voltage (RMS) | Phase to Phase/Phase to earth |
kV |
42 |
65 |
95 |
| Insulation Distance |
48 |
79 |
118 |
||
| Rated Lightning impulse withstand voltage(peak) | Phase to Phase/Phase to earth |
kV |
75 |
125 |
185 |
| Insulation Distance |
85 |
145 |
215 |
||
| Rated short-circuit breaking current(RMS) |
kA |
20/25/31.5/40 |
|||
| Rated short-circuit making current(peak) |
kA |
50/63/80/100 |
|||
| Rated short-time withstand current (4S) |
kA |
20/25/31.5/40 |
|||
| Rated peak withstand current |
kA |
50/63/80/100 |
|||
| Mechanical life |
Times |
10000 |
|||
| Rated operating sequence |
/ |
0-0.3s-CO-3min-CO |
|||
| Clearance between open contacts |
mm |
9±1 |
13±1 |
18±1 |
|
| Contact touching range |
mm |
3±0.5 |
3±0.5 |
3±0.5 |
|
| Contact closing bounce time |
ms |
≤2 |
|||
| Three-phase closing &opening asynchrony |
ms |
≤2 |
|||
| Average opening speed (at the initial 75%opening distance) |
m/s |
0.8~1.4 |
1.2~1.6 |
1.2~1.8 |
|
| Average closing speed (at the initial 75%opening distance) |
m/s |
0.4~0.8 |
0.5~0.9 |
0.8~1.2 |
|
| Opening time |
ms |
35±10 |
|||
| Closing time |
ms |
50±10 |
|||
| Rebound amplitude of opening contact |
mm |
≤2 |
|||
| Main circuit resistance of each phase |
μΩ |
≤25 |
|||
| Energy storage time of closing spring |
S |
≤15 |
|||
Note: The above insulation levels are reference values at the rated working pressure of the insulating gas.
Structure
Figure 1 Typical structure of circuit breaker cabinet
(Bus top connection - cables input & output and outer cone bushing)
A. Bus panel B. Meter panel C. Circuit breaker panel
D. Cable panel E. Mechanism panel
- 1. Front panel2. Framework3. Back panel4. HV cable (user prepare5. Back plug type lightning arrester6. CT (ring core type)7. Extended outer cone bushing8. Vacuum circuit breaker9. Outer cone bushing10. Gas tank
- 11. Branch bus12. Pressure release device for circuit breaker panel13. Three position switch operating mechanism14. Gas density relay15. Three position DS/ES16. Secondary unit panel17. Top connection outer cone bushing18. Pressure release device for bus panel19. Top connection main bus
Figure 2 Typical structure of circuit breaker cabinet
(Bus side connection - cable input & output and inner cone bushing)
A.Bus panel B. Meter panel C.Circuit breaker panel
D. Cable panel E. Mechanism panel
- 1. Front panel2. Framework3. HV cable (user prepare)4. Lightning arrester5. CT6. HV charged display7. 2# Inner cone outlet8. 3#inner cone outlet9. CT(built-in type)10. Vacuum circuit breaker
- 11. Gas tank12. Branch bus13. Three position switch operating mechanism14. Gas density relay15. Pressure release device for vacuum circuit breaker panel16. Three position DS/ES17. Secondary components front-panel18. Main bus and side connection inner cone bushing19. Pressure relief device for bus panel