| Brand | Rockwell |
| Model NO. | UG Series SF6 Station service voltage transformers |
| Rated voltage | 420kV |
| Series | UG Series |
Overview
Technical features
- UG gas-insulated SSVT is suitable for outdoor installations
- Primary winding is connected directly to high voltage (HV) and ground, while the secondary winding supplies low voltage (LV)
- Cooling method: GNAN (gas natural, air natural)
- HV terminals made of high conductivity aluminium. Can be cylindrical or flat type (e.g. NEMA)
- Fiber-glass insulator with silicon rubber sheds and creepage distance ≥ 25 mm / kV
- Enclosure made of aluminium alloy containing cores, primary and secondary windings
- Magnetic cores made of laminated steel with oriented grains and high level of permeability
- Windings made of electrolytic copper
- Optional metering windings
- Tested according to IEC 61689 and IEC 60076 or IEEE C57.13 and C57.12
- Suitable for applications in very low temperatures ( -50 oC) with mixed gas
Technology parameters
