GIS/Equipment Terminations
The dry compact GIS/Transformer termination for voltage classes up to 245 kV is designed to be installed in cable entry housings of gas-insulated switchgear (GIS)/Transformer.
- Complies with IEC 62271-209 standard, which essentially specifies interfaces between termination and switchgear
- Adapters available to match dimensions of wet (oil-filled) type terminations, as specified in IEC 60859
- Insulator can be installed by GIS / transformer manufacturer at factory, saving installation time on-site and reducing risk of contamination of cable entry housing
- No special tools required for installation
- Easily separable, consists of a plug-in part and epoxy resin insulator
- Transformer Terminations comply to dimensions as per EN50299 Standard
Specifications
| Parameter |
|---|
| Operates in SF6 and insulating liquids like transformer oil |
| Corona shield at top of Transformer termination provides shielding for terminal |
| Dry interfaces, no oil-filling |
| Pressure-tight resin housing |
| Prefabricated and factory-tested silicone-rubber stress cone |
| Torque-controlled or wedge-type multi-contact conductor bolt |
| Insulated cable gland for sectionalization |
| Type tested according to IEC 60840 and IEC 62067 standards |
| Design Data | |||
|---|---|---|---|
| Rated kV | 36/69 (72.5) | 76/132 (145) | 127/220 (245) |
| Diameter over insulation range | 38.40mm – 77.4 mm | 38.40 mm – 95.10 mm | 64.0 -123.1 mm |
| Diameter over sheath | ≤120 mm | ≤140 mm | ≤160 mm |
| Cable screen type | Corrugated Al. sheath, Copper wire, Copper tape, Lead sheath, etc. | Corrugated Al. sheath, Copper wire, Copper tape, Lead sheath, etc. | Corrugated aluminium sheath/Lead sheath/Cu wire. etc. |
| Max. Cross section (Al/Cu) | ≤1200 mm² | ≤1600 mm² | ≤2500 mm² |
| Conductor connection | Mechanical (shear off bolts)/Wedge connector | Mechanical (shear off bolts)/Wedge connector | Mechanical (shear off bolts)/Wedge connector |
| Material of Housing | Epoxy Resin | Epoxy Resin | Epoxy resin |
| Material of connection bolt | Aluminum Alloy | Aluminum Alloy | Aluminum Alloy |
| Method of Stress Control | Geometric | Geometric | Geometric |
| Type of Stress Cone | Pre-moulded silicone rubber | Pre-moulded silicone rubber | Pre-moulded silicone rubber |
| Corona Shield (only for Transformer Termination) | Aluminium Alloy | Aluminium Alloy | Aluminum Alloy |
| Installation temperature [°C] | 0 to +40 | 0 to +40 | 0 to +40 |
| Operation temperature | -55 °C – +55 °C | -55 °C – +55 °C | -55 °C – +55 °C |
| Storage temperature [°C] | 0 to +40 | 0 to +40 | 0 to +40 |
Technical Information
| Relevant standard | IEC 60840 | IEC 60840 | IEC 62067 | |
|---|---|---|---|---|
| Rated voltage U0 /U (Um) | kV | 36/69 (72.5) | 76/132 (145) | 127/220 (245) |
| Rated frequency | Hz | 50 | 50 | 50 |
| Lightening impulse voltage 1.2/50µs | kV | 350 | 650 | 1050 |
| AC Voltage withstand test (15/30 min) | kV | 90 | 90 | 254/318 |
| Partial discharge 1.5Uo (kV) | pC | ≤5 | ≤5 | ≤5 |
| Rated current | kA | as per cable | as per cable | as per cable |
| Rated short circuit current conductor) 1s | kA | as per cable | as per cable | as per cable |
| Rated short circuit current (sheath) 1s | kA | as per cable | as per cable | as per cable |
| Creepage distance | mm | 254 | 410 | 475 |
| Electrical Data for 72/145/245 kV GIS / Equipment Extra High Voltage Termination | ||||
