1.4
SEL-2701 Ethernet Processor Instruction Manual Date Code 20020501
Introduction
Applications
Applications
The SEL-2701 can assist with many substation networking applications. A
sampling of applications is listed below to help give you ideas on how to apply
the features of the SEL-2701.
Application Features
Each SEL-2701 application contains a combination of major features. The
following paragraphs summarize the major features that you can combine in
your application.
Redundant Networks
Use the SEL-2701 to connect SEL hosts to redundant Ethernet networks. An
example redundant network connection is shown in Figure 1.1. The
SEL-2701 has two network ports that allow you to connect both the primary
network and the standby network to the SEL-2701. You do not have to install
two separate SEL-2701s to support a redundant network system. The benefit
of this arrangement is lower equipment and setup cost because there is only
one network card and one set of network settings per host.
Figure 1.1 Redundant Substation Ethernet Network.
When the SEL-2701 is unable to detect normal operation on the primary
network, it automatically switches from the primary network to the standby
network. The SEL-2701 returns to the primary network when normal
operation on the primary network resumes.
To Re m o te
Networks
Primary Network Standby Network
SEL Host
Router Router
SEL-2701
Switch Switch
WAN
Access Device
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