| Brand | Switchgear parts |
| Model NO. | SF6 Sleeve for GIS, SF6 gas filled sleeve for switchgear(composite, ceramic) |
| Rated voltage | 126kV |
| Rated normal current | 2500A |
| Series | T126 |
SF6 inflatable sleeve (composite, ceramic) is mainly composed of external insulation, internal conductor, internal shielding cover, external pressure equalization ring and other components. The external insulation adopts ceramic or composite jacket, and the internal assembly includes integrated conductive rod and shielding structure. SF6 gas filled sleeve (composite, ceramic) is mainly used in GIS/GCB equipment and is an important part of power grid equipment.
Product Features
a) Innovative overall structural design, compact structure, reliable sealing performance and electric field voltage equalization; b) Innovation in electric field design technology includes current carrying design of conductive rods, internal shielding structure design, and external shielding structure design.
Product Specifications
| Model | Maximum Operating Voltage (kV) | Rated Current (A) | Creepage Distance (≥ mm) | Insulator Dry Arc Distance L2 (mm) | 1min Power Frequency Withstand Voltage (kV) | Lightning Impulse Withstand Voltage (kV) | Wet Switching Impulse Withstand Voltage (kV) | Partial Discharge Level (pC) | Terminal Bending Withstand Load (1min, N) | SF6 Rated Pressure (20℃ Gauge Pressure, MPa) | Conductive Rod Loop Resistance (≤ μΩ) | Outer Insulation Sleeve Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| T126/2500-190-01 | 126 | 2500 | 3906 | 1160 | 230 | 550 | / | 126kV down≤5 | 3150 | 0.45 | ≤30 | Porcelain Sleeve |
| T252/3150-300-01 | 252 | 3150 | 9000 | 2260 | 460 | 1050 | / | 300kV down≤5 | 4000 | 0.58 | ≤45 | Composite |
| T252/4000-300-01 | 252 | 4000 | 9000 | 2260 | 460 | 1050 | / | 300kV down≤5 | 4000 | 0.58 | ≤40 | Composite |
| T252/3150-340-01 | 252 | 3150 | 7600 | 2200 | 460 | 1050 | / | 300kV down≤5 | 4000 | 0.58 | ≤45 | Porcelain Sleeve |
| T550/4000-460-01 | 550 | 4000 | 18755 | 4700 | 740 | 1675 | 1300 | 381kV down≤3 | 5000 | 0.4 | ≤60 | Porcelain Sleeve |
| T550/5000-460-01 | 550 | 5000 | 18755 | 4700 | 740 | 1675 | 1300 | 381kV down≤3 | 5000 | 0.4 | ≤40 | Porcelain Sleeve |
| T550/4000-500-01 | 550 | 4000 | 21000 | 5250 | 740 | 1675 | 1300 | 381kV down≤3 | 4000 | 0.45 | ≤60 | Composite |
| T750/5000-720-01 | 750 | 5000 | 40300 | 7540 | 830 | 1800 | 1425 | 520kV down≤5 | 4000 | 0.45 | ≤60 | Composite |
Note: 1. The size of the wiring terminal at the upper end of the outlet sleeve, the size of the guide rod at the lower end, and the flange connection size can be customized according to engineering needs; 2. SF6 annual leakage rate ≤ 0.1%; 3. Operating temperature: -40 ℃~+50 ℃, applicable altitude: ≤ 2000m.
Widely used in GIS/HGIS substations, SF6 combined electrical appliances, and high-voltage switchgear. Voltage ranges from medium to ultra-high (up to 550kV), rated current up to 5000A, with 1min power frequency withstand voltage up to 740kV and lightning impulse withstand voltage up to 1675kV. Ideal for power grid projects, industrial distribution systems, and high-altitude/heavy pollution areas.
It acts as a key insulation and current-carrying component for GIS (Gas Insulated Switchgear) and HGIS. With SF6 gas as internal insulation (same pressure as the substation), it connects gas-insulated equipment to overhead lines, realizing safe current transmission while isolating the equipment shell from high voltage, ensuring stable operation of power systems.
