DEMA CPM 310 G, User Manual

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Protection and Control Settings Menu
Protection and Control Settings Menu is reached from
the “Set” command from the main screen by pressing
“S4” button, as shown on the picture to the left.
Menu content is shown on the picture below. As shown,
the menu provides access to the 12 protection and
control functions; and modifications such as function
activation, deactivation or setting parameters are done
via the controls on this menu. Each of the functions on
this menu will be examined thoroughly on the following
pages.
On the menu, S1 (

) and S2 (

) buttons let the user
to navigate to left and right directions on the menu,
while S3(

) button leads to the next line. By using
those buttons, the user can navigate to any of the
functions, which will flash when navigated over it. S5
(Enter) button is used to enter the submenus of the
function selected, and S4 (Escape) button leads to the
main screen.
Abbreviations and descriptions of the functions on the
menu are given below.
I> Phase Overcurrent 1 st Threshold Protection.
I>> Phase Overcurrent 2 nd Threshold Protection.
I>>> Phase Overcurrent 3 rd Threshold Protection.
I
e
> Earth Overcurrent 1 st Threshold Protection.
I
e
>> Earth Overcurrent 2 nd Threshold Protection.
I
e
>>> Earth Overcurrent 3 rd Threshold Protection.
I
2
> Negative Sequence 1 st Threshold Protection.
I
2
>> Negative Sequence 2 nd Threshold Protection.
%(I2/I1)> Broken Conductor Protection.
I< Phase Undercurrent Protection.
I
Θ
> Thermal Overload Protection.
ARCL Auto-recloser Settings. □
Main Screen » Set