MarelliMotori MEC-100 Manuel De L'utilisateur page 94


Enable Protection: protection activation flag; click on this button to activate the generator over-voltage protection function.

Apply to Relay 1: relay 1 assignment flag; click on this button to assign the protection intervention signal to relay 1.

Apply to Relay 2: relay 2 assignment flag; click on this button to assign the protection intervention signal to relay 2.
Generator Undervoltage (see Par. 3.6.4):
❑
Voltage Threshold (%): enter in this field the minimum generator voltage level value which corresponds to the activation of
the relevant protection. It is expressed in percentage with respect to the generator rated voltage value (0 to 100%, with
minimum increase of 1%).
❑
Time Delay (s): enter in this field the time interval value during which the MEC-100 is authorized to supply a voltage lower
than or equal to the Voltage Threshold value, before the activation of the relevant protection (0 to 300s, with minimum
increase of 1s).

Enable Protection: protection activation flag; click on this button to activate the generator under-voltage protection function.

Apply to Relay 1: relay 1 assignment flag; click on this button to assign the protection intervention signal to relay 1.

Apply to Relay 2: relay 2 assignment flag; click on this button to assign the protection intervention signal to relay 2.
Loss of Sensing (see Par. 3.6.6):
 Shutdown/FCR: protection type selection. If Shutdown is selected, an instantaneous de-excitation of the generator will be
operated when the loss of sensing occurs, if FCR is selected, an instantaneous switch to FCR Mode will be operated when
the loss of sensing occurs.

Enable Protection: protection activation flag; click on this button to activate the loss of sensing protection function.

Apply to Relay 1: relay 1 assignment flag; click on this button to assign the protection intervention signal to relay 1.

Apply to Relay 2: relay 2 assignment flag; click on this button to assign the protection intervention signal to relay 2.
BY DEFAULT, PROTECTIONS ARE INITIALLY DISABLED. Pay particular attention, when configuring the MEC-
100, to the activation of all concerned protections.
963857137_M
Fig. 5.7.8.a
Generator Protection Parameter Area
MEC-100 – Marelli Motori
94