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MR-REF & MR-REF3 Technical Manual
Issue 3, November 2013
6.3. Feeder Settings.
This screen allows access to the Feeder Settings of the
relay. The EF CT Primary can be viewed and set.
The list of values that are available to be changed can
be scrolled through by pressing the UP and DOWN
buttons.
A value can be selected to have its value changed by pressing the Y button when the value is highlighted. This then
brings up the VALUE CHANGE SCREEN
The Value Change pop-up allows you to alter settings
in specified steps within the minimum and maximum
values of the particular setting range. The UP and
DOWN arrow buttons are used to alter the value. The
Next function is used to skip along to the next
character.
Save is pressed to store the new value and exit.
If an undesired value is inserted incorrectly use the Next button to skip past the last character to the left.
The Save option button now operates as a Discard to dump the new value without saving – reverting back
to the original value on initial selection.
E/F CT Primary.
This setting allows the user to program the primary current rating of the protection class current transformer used to
measure the earth fault current. It is assumed that all phase current transformers are of the same rating for the MR-
REF3
Summary of Contents for MR-REF
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