Микропроцессорное реле Siprotec 7SD80, Караганда

Принципы деятельности ТОО "Сервис-2007" это качество и надежность изделий, гибкие сроки и цены, обязательность перед клиентами и партнерами!

Дифференцированная линейная защита для всех точечных методов заземления

The line differential protection device 7SD80 of the SIPROTEC Compact Series is designed for selective line protection and is suitable for solid, low and high resistance as well as resonance earthed or isolated networks.

The implemented differential protection algorithms provide a high stability for external faults and have low CT requirements. Parameterization and testing of the differential protection is very easy.

If the 7SD80 has been selected with voltage measurement inputs (order option) it is possible to use the integrated overcurrent protection as directional protection (one inverse-time and two definite-time overcurrent).

Each of the overcurrent protection stages can be individually set as emergency- or backup-function. This provides the possibility to integrate the 7SD80 relays via reverse interlocking into a simple bus bar protection scheme and even in case of a communication loss it is ensured that the line is still protected with directional overcurrent backup-function.