Overview - ABB REL 551-C1 2.3 Series Installation And Commissioning Manual

Line differential protection terminal
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Overview

Overview
Before the procedures in this chapter can be carried out the connection to external cir-
cuitry must have been checked which ensures that the installation was made correctly.
The user must energise the power supply to the terminal to start it up. This could be
done in a numerous of ways, from energising a whole cubicle to energising a single ter-
minal. The user should reconfigure the terminal to activate the hardware modules in or-
der to enable the self supervision function detect eventual hardware errors. Then the
terminal time must be set. The self supervision function should also be checked to ver-
ify that the terminal unit operates properly. The user could also check the software ver-
sion, the terminals serial number and the installed modules and their ordering number
to ensure that the terminal is according to delivery and ordering specifications.
Chapter 7
Energising the terminal

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