Method for the protection in particular of telecommunication installations and protection circuit for carrying out the method
US5808849A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 20, 1997 |
| Grant date | Sep 15, 1998 |
| Priority date | — |
| Expiry date | Mar 20, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H9/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for the protection of in particular telecommunication installations against overvoltage and overcurrent by overvoltage arresters, PTC resistors and voltage-limiting components and to a protection circuit for carrying-out the method. The object of the invention, namely to develop a method and a circuit in particular for the protection of telecommunication installations against overvoltage and overcurrent that secures a surge-current resistant and reversible line protection, is achieved by the response voltage of the overvoltage arrester being higher than the peak value of a powersupply voltage, and that the response voltage of the thyristor diodes selected being slightly above the maximum operating voltage values of the line to be protected. The PTC resistors are used as a decoupling member to block the maximum amplitudes of the power supply voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.