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Indoor Gas Insulated Metal-Clad Switchgear XGN (XGTD5)-(12, 24)40.5 - China Suppliers and Factory
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
Ambient temperature: -45 ℃~+40 ℃ the daily average value shall not exceed 35 ℃;
Altitude: < 5000m above the sea level;
Relative humidity: Daily average< 95%, Monthly average is < 90%;
Seismic grade: the seismic intensity shall not exceed grade 8;
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
| 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 | μ Ω | Rated current≤1600A,Rc≤220 Rated current≥2000A, Rc≤105 |
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| 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
| 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
1Front panel
2Framework
3Back panel
4HV cable (user prepare)
5Back plug type lightning arrester
6CT (ring core type)
7Extended outer cone bushing
8Vacuum circuit breaker
9Outer cone bushing
10Gas tank
11Branch bus
12Pressure release device for circuit breaker panel
13Three position switch operating mechanism
14Gas density relay
15Three position DS/ES
16Secondary unit panel
17Top connection outer cone bushing
18Pressure release device for bus panel
19Top 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
1Front panel
2Framework
3HV cable (user prepare)
4Lightning arrester
5CT
6HV charged display
72# Inner cone outlet
83# inner cone outlet
9CT (built-in type)
10Vacuum circuit breaker
11Gas tank
12Branch bus
13Three position switch operating mechanism
14Gas density relay
15Pressure release device for vacuum circuit breaker panel
16Three position DS/ES
17Secondary components front-panel
18Main bus and side connection inner cone bushing
19Pressure relief device for bus panel
Frequently Asked Questions (FAQ)
What are the primary applications for this switchgear?
This product is designed for infrastructure construction in power stations, power substations, movable transformer packs, rail traffic, and buildings with a nominal voltage of 35kV or below. It is especially suitable for severe environments such as high altitudes, heavy pollution, and high humidity areas.
Can this equipment operate reliably at high altitudes?
Yes, it is designed to operate under standard service conditions at altitudes up to 5000m above sea level. If your installation environment exceeds this limit, please contact our technical team for custom solutions.
What is the IP protection rating of the switchgear compartments?
The switchgear features superior environmental protection, with the High-Voltage (HV) compartment rated at IP67 and the Low-Voltage (LV) compartment rated at IP4X.
What is the mechanical lifespan of the integrated vacuum circuit breaker?
The vacuum circuit breaker is engineered for high durability with a rated mechanical life of up to 10,000 operations.
What are the acceptable temperature limits for operation?
The standard ambient temperature range for reliable operation is from -45 ℃ to +40 ℃, with the daily average value not exceeding 35 ℃.