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Chapter 4. Physical Architecture
4-3
M7IRDA2003I
7IRD-A/J/M: Distribution Protection & Control Terminal
© ZIV APLICACIONES Y TECNOLOGÍA, S.L.U. 2020
Following figure shown the rear plate, different according to the models (a generic one is
shown), where there is the rear communications port and the connectors of protection, control,
metering circuit boards and enlargement circuit board. If the control subsystem is enlarged, the
enlargement circuit board is just above of the control based circuit board. The top circuit board
is that corresponding to the measurements that have directly communication with the control
subsystem.
Figure 4.2
7IRD Rear View.
4.2
Protection and Control Interconnection
Both systems are interconnected through an interface which transfers data in both directions. It
basically consists of a specific hardware and the corresponding software routines to handle the
hardware.
4.3
Dimensions
7IRD
IED’s have a standard 19” rack width, are 4 rack units high. The equipment is intended to
be installed semi-flush mounted in panels. The enclosure colour of the unit is graphite.
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Страница 175: ...D List of Illustrations and Tables...