Load totalizing blocked throwover control
US5008560A · kind A · utility
1Cited by
5References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 23, 1989 |
| Grant date | Apr 16, 1991 |
| Priority date | — |
| Expiry date | Feb 23, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J3/46
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric utility sub-station having two transformers which transmit electric energy to customers in different service areas. A throwover is provided which is operative, when a failure occurs in one transformer, to switch the load normally carried by the failed transformer over to the other transformer which then carries the load of both transformers. Operation of the throwover is blocked when the total demand load on both transformers exceeds the capacity of either transformer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.