Patent ID: 7930460
Filing Date: 2011-04-19
Classification: G05B,H04L

Abstract:
1. A protective device, comprising: a first interface for establishing a connection to at least one measurement transducer, the at least one measurement transducer being connected to at least one phase conductor of an electric power grid; a second interface for connecting to a superordinate data bus; and a communication unit directly connected to said first and second interfaces, said communication unit being directly connected to the measurement transducer through said first interface, said communication unit being connected to the superordinate data bus through said second interface, said communication unit receiving time-stamped phase-conductor-related samples from the measurement transducer for forming sampling-time-related messages and transmitting the sampling-time-related messages to the superordinate data bus, said communication unit being configured to form said sampling-time related messages by sorting the phase-conductor-related samples according to their respective time-stamps and forming a sampling-time-related message from those phase-conductor-related samples having the same time-stamp.