ABB REC650 ANSI, Applications Manual

Page: 287 / 370

11.9.2 Application
The function TEIGGIO is used for user defined logics and it can also be used for different
purposes internally in the IED . An application example is the integration of elapsed time
during the measurement of neutral point voltage or neutral current at earth fault
conditions.
Settable time limits for warning and alarm are provided. The time limit for overflow
indication is fixed.
11.9.3 Setting guidelines
The settings tAlarm and tWarning are user settable limits defined in seconds. The
achievable resolution of the settings depends on the level of the values defined.
A resolution of 10 ms can be achieved when the settings are defined within the range
1.00 second ≤ tAlarm ≤ 99 999.99 seconds
1.00 second ≤ tWarning ≤ 99 999.99 seconds.
If the values are above this range the resolution becomes lower
99 999.99 seconds ≤ tAlarm ≤ 999 999.9 seconds
99 999.99 seconds≤ tWarning ≤ 999 999.9 seconds
Note that tAlarm and tWarning are independent settings, that is, there is no
check if tAlarm > tWarning .
tOverflow is for overflow supervision with a default value tOverflow = 999 999.9 seconds.
The outputs freeze if an overflow occurs.
1MRK 511 286-UUS A
Section 11
Logic
281
Application manual