2-10
MIWII Directional Power Protection System
GEK-113308
2.7 EVENTS
2 PRODUCT DESCRIPTION
2
2.7
EVENTS
MIWII stores an historical record with the last 24 events. Each event contains the event description, date and time (4 ms
accuracy), the analog channels at that moment (Ia, VI, VII, VIII and P, Q, S) and the internal signals at that moment.
In ENERVISTA MII SETUP there is an “EVENTS” menu, where the user can check how many events have been produced
since the last time the Events were deleted. If this number is higher than 24(maximum number of events stored), this
means that only the last 24will be stored.
This event record is stored in a capacitor backed up RAM memory. Events functionality in MIWII is performed via the
ENERVISTA MII SETUP software.
Inside the ADVANCED SETTINGS group, there is a sub-group called EVENT MASKS, from where the different causes that
can produce events can be masked. They are detailed in the SETPOINT – SETPOINT – ADVANCED SETTINGS – EVENT
MASK section. The following table shows a list of all possible events. In those cases where opposite situations are shown,
such as ACTIVATION/DEACTIVATION of a protection unit, there are two possible events, one for activation and another for
deactivation:
