Overall Operation
The multi-functional protection devices SIPROTEC 4 7VE61 and 7VE63 are equipped with a powerful micro-
processor. All tasks, such as the acquisition of the measured quantities, issuing of commands to circuit
breakers and other primary power system equipment, are processed fully digitally. Figure 1-1 shows the basic
structure of the device.
Analog Inputs
The measuring inputs (MI) are galvanically isolated, transform the voltages from the primary transformers and
adapt them to the internal processing level of the device. Six voltage inputs are available in the MI section.
[hardwarestruktur-ve6-200303-kn, 1, en_GB]
Figure 1-1
Hardware structure of the digital Multifunction Paralleling Devices 7VE61 and 7VE63 (maximal
configuration)
The IA input amplifier group allows high impedance connection for analog input values and contains filters
optimized for measured value processing bandwidth and speed.
The AD analog digital converter group contains high resolution ΣΔ digital converters (22 bits) and memory
components for data transfer to the microcomputer.
Micro Computer System
The implemented software is processed in the microcomputer system (μC) Essential functions are:
1.1
Introduction
1.1 Overall Operation
16 SIPROTEC 4, 7VE61 and 7VE63, Manual
C53000-G1176-C163-3, Edition 10.2017
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