ABB Relion REQ650, Applications Manual

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Section 15 Basic IED functions
15.1 Self supervision with internal event list
15.1.1 Identification
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Internal error signal INTERRSIG - -
Internal event list SELFSUPEVLST - -
15.1.2 Application
The protection and control IEDs have many functions included . Self supervision with
internal event list (SELFSUPEVLST) and internal error signals (INTERRSIG)
function provide supervision of the IED. The fault signals make it easier to analyze
and locate a fault.
Both hardware and software supervision is included and it is also possible to indicate
possible faults through a hardware contact on the power supply module and/or
through the software communication.
Internal events are generated by the built-in supervisory functions. The supervisory
functions supervise the status of the various modules in the IED and, in case of failure,
a corresponding event is generated. Similarly, when the failure is corrected, a
corresponding event is generated.
The event list is updated every 10s hence, an event will not be visible
in the event list as soon as it is created.
Apart from the built-in supervision of the various modules, events are also generated
when the status changes for the:
• built-in real time clock (in operation/out of order).
• external time synchronization (in operation/out of order).
• Change lock (on/off)
Events are also generated:
• whenever any setting in the IED is changed.
1MRK 505 291-UEN A
Section 15
Basic IED functions
297
Application manual