Combination apparatus of a distribution transformer and switches
US6181125A · kind A · utility
Inventors
Key dates
| Filing date | Jan 27, 2000 |
| Grant date | Jan 30, 2001 |
| Priority date | — |
| Expiry date | Jan 27, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F27/42
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A combination apparatus of distribution transformer and switch includes a distribution transformer with three-phase and five-column, wherein the arrangement of the low-voltage winding in WYE.sub.o -form, the high voltage winding of each phase is connected in series with a high voltage fuse to constitute respectively one of the three high voltage phase arms, and the arrangement in high voltage side is DELTA form which is formed with one high voltage phase arm as one unit. The apparatus can be used in the system in which the neutral is not connected to the ground, or the neutral is connected to the ground through extinguishing-arc coil or through small resistance, and in the system in which the neutral is connected to the ground directly as well. It is possible that the fault phase does not disturb the normal operation of the other phases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.