Operation and configuration
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1. General
This first part (Operation and configuration) of the publication
contains general descriptions of the functions as well as
operation instructions. It also includes instructions for
parameterization and configuration of the relay and
instructions for changing settings.
The second part (Technical description) of the publication
includes detailed protection function descriptions as well as
application examples and technical data sheets.
The Mounting and Commissioning Instructions are published
in a separate publication with the code VMMC.EN0xx.
1.1. Relay features
The comprehensive protection functions of the relay make it
ideal for utility, industrial, marine and off-shore power
distribution applications. The relay features the following
protection functions.
List of protection functions
Main protection functions
Short circuit distance protection
Earth-Fault distance protection
Line differential protection
Back-up protection functions
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Directional overcurrent protection
Directional earth fault protection
Non directional overcurrent protection
Non directional earth fault protection
Optional arc fault protection
Circuit-breaker failure protection
Rate of change of frequency (ROCOF) protection
Zero sequence voltage protection
Thermal overload protection
Reverse and underpower protection
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General