0102030405
China XGN (XGTD5)-(12, 240.5 Indoor Gas Insulation Metal-clad Switchgear Suppliers | Factory Direct
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 severe 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 ℃ (daily average value shall not exceed 35 ℃)
b. Altitude
< 5000m above the sea level
c. Relative Humidity
Daily average < 95%, Monthly average < 90%
d. Seismic Grade
Seismic intensity shall not exceed grade 8
e. Electromagnetic Interference
Inductive EM interference value of secondary system ≤ 1.6 KV
Note: If the service environment exceeds the above conditions, please consult with our company.
Technical Parameter
Main Technical Parameters of Switchgear
| Item | 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 circuit | 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 | μΩ | Rated current≤1600A, Rc≤220; Rated current≥2000A, Rc≤105 | |||
| Rated voltage of auxiliary and control circuit | V | DC110/220, AC220 | |||
| 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
| Item | 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
(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 panel
- 2. Framework
- 3. Back panel
- 4. HV cable (user prepare)
- 5. Back plug type lightning arrester
- 6. CT (ring core type)
- 7. Extended outer cone bushing
- 8. Vacuum circuit breaker
- 9. Outer cone bushing
- 10. Gas tank
- 11. Branch bus
- 12. Pressure release device for circuit breaker panel
- 13. Three position switch operating mechanism
- 14. Gas density relay
- 15. Three position DS/ES
- 16. Secondary unit panel
- 17. Top connection outer cone bushing
- 18. Pressure release device for bus panel
- 19. 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
(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 panel
- 2. Framework
- 3. HV cable (user prepare)
- 4. Lightning arrester
- 5. CT
- 6. HV charged display
- 7. 2# Inner cone outlet
- 8. 3# inner cone outlet
- 9. CT (built-in type)
- 10. Vacuum circuit breaker
- 11. Gas tank
- 12. Branch bus
- 13. Three position switch operating mechanism
- 14. Gas density relay
- 15. Pressure release device for VCB panel
- 16. Three position DS/ES
- 17. Secondary components front-panel
- 18. Main bus & side connection inner cone bushing
- 19. Pressure relief device for bus panel
Frequently Asked Questions
What are the primary applications and nominal voltage ratings for this switchgear?
This switchgear is commonly used in infrastructure construction for power stations, power substations, movable transformer packs, rail traffic, and buildings with a nominal voltage of 35kV or below.
What environmental service conditions are required for optimal operation?
The standard operating conditions include an ambient temperature range of -45 ℃ to +40 ℃ (with a daily average not exceeding 35 ℃), an altitude of less than 5000m above sea level, daily relative humidity under 95%, seismic intensity up to grade 8, and secondary system inductive electromagnetic interference under 1.6 KV.
What is the ingress protection (IP) rating of the compartment enclosures?
The switchgear features a high-level protection structure, with the High Voltage (HV) compartment rated at IP67 and the Low Voltage (LV) compartment rated at IP4X.
What is the mechanical life expectancy of the vacuum circuit breaker?
The vacuum circuit breaker is designed for high reliability and durability, with a rated mechanical life of 10,000 operations (times).
What are the specifications for the SF6 insulating gas used in this equipment?
The rated SF6 gas pressure is 0.04/0.05 MPa at 20℃, with a minimum pressure threshold of 0.03 MPa. The annual SF6 gas loss rate is strictly controlled to less than or equal to 5‰.
Can the switchgear operate in extremely severe environments?
Yes. Due to its miniaturization, maintenance-free design, and complete interlocking logic, it is especially suited for severe environments characterized by high altitude, heavy pollution, and high humidity.