About This Section; Safety Information; Acronyms And Definitions - ABB eVM1 Installation And Service Instructions Manual

14. Multifunction Protection and Switchgear Control Unit

14.1 About this section

This section describes how to use the protection functions available in the electronic controller of
the eVM1.
This section is addressed to engineering personnel and to anyone who needs to configure the
eVM1.

14.2 Safety Information

Do not make any changes to the eVM1 configuration unless you are familiar with the eVM1
and its Operating Tool. This might result in malfunction and loss of warranty.
The selection of this control mode requires caution, because operations are allowed both from the
HMI and remotely.

14.3 Acronyms and definitions

14.3.1 Acronyms
CB Circuit-breaker or Switch
CCT Cable Current Transformer
CP Control Panel
CU Control Unit
CT Current Transformer
CoT Configuration Tool
HMI Human Machine Interface
14.3.2 Definitions
Active signal A signal is active when high, e.g. logic value "1" or over activation threshold for
DI, (about 20 V)
Inactive signal A signal is inactive when low, e.g. logic value "0" or below activation threshold for
DI (about 10 V)
IED Integrated Electronic Device
MA Magnetic Actuator
MB Main Board
MV Medium Voltage
PS Power Supply
VT Voltage Transformer
Warning!
Note
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