GE Feeder Management Relay 750 User Manual

GE Multilin 750/760 Feeder Management Relay 6-17
6 ACTUAL VALUES 6.5 A4 EVENT RECORDER
6
Event information is gathered at the instant the event occurs; as such, the current and voltage readings may reflect the
transient nature of the event as opposed to steady state values. All messages pertaining to phase voltages AN, BN, and
CN are only displayed if VT CONNECTION TYPE is programmed to "Wye". If VT CONNECTION TYPE is programmed to "Delta",
line voltages AB, BC, and CA are displayed.
Events are organized into several different types as shown in the table below. Several event types can be filtered out in
order to save space in the event recorder (see Sections 5.2.4: Event Recorder on page 5–10 and Chapter 7 for more
details on event filtering). For every event type there are a number of possible causes. The Cause of Events table lists all
the event causes according to which event types they can generate.
The following symbols are used in the description of the event messages: <Φ> represents the phases involved (e.g. ΦBC)
in the event if applicable and <ON> represents whether the logic input is asserted (ON) or not asserted (OFF)
The event causes are listed alphabetically by type of event in the following table.
Table 6–2: EVENT TYPES
EVENT TYPE DISPLAY DESCRIPTION
General Events None Events that occur when a specific operation takes place
Pickup Events
PICKUP: <Φ>
These are events that occur when a protection element picks up and starts
timing
Trip Events
TRIP: <Φ>
These are events that occur when an element whose function has been
programmed to "Trip" or "Trip & AR" operates.
Alarm Events
ALARM: <Φ>
These are events that occur when an element whose function has been
programmed to "Alarm" operates or drops out.
Latched Alarm Events
LATCHED ALARM: <Φ>
These are events that occur when an element whose function has been
programmed to "Latched Alarm" operates or drops out.
Control Events
CONTROL: <Φ>
These are events that occur when an element whose function has been
programmed to "Control" operates or drops out.
Dropout Events
DROPOUT:
These are events that occur when a protection element drops out after a
corresponding pickup event.
Contact Events
INPUT C <ON>:
These are events that occur when a contact input is either asserted or de-
asserted.
Virtual Input Events
INPUT V <ON>:
These are events that occur when a virtual input is either asserted or de-
asserted.
Contact and Virtual
Input Events
INPUT CV <ON>:
These are events that occur when both a contact input and virtual input is either
asserted or de-asserted.
Self-Test Warning
Events
SELF-TEST WARNING:
These are events that occur when a self-test warning is detected or one of the
manual testing
Courtesy of NationalSwitchgear.com

GE Feeder Management Relay 750 Specifications

General

Brand	GE
Model	Feeder Management Relay 750
Category	Protection Device
Language	English