Reference: A938
Index: B
Page 91
This document is the property of ICE SAS. It can not be reproduced or communicated to third parties without authorization.
Instruction Manual – NPS914 Alarm and Indication IED
7.2. Analog fault registers
At
Communication
→
General I/O
→
Analog fault registers
the user can set up to twelve (12) channels
to record the measured value when a protection function starts or trips. These values can be read in two ways:
locally from this same menu, or through a communication protocol if one is in use.
The following table presents the setting parameters available for the 12 channels.
Table. 7.2. - 17. Fault register settings.
Name
Range
Step
Default
Description
Select
record
source
0: Not in use
1…12: I>, I>>, I>>>, I>>>>
(IL1, IL2, IL3)
13…24: Id>, Id>>, Id>>>,
Id>>>> (IL1, IL2, IL3)
25…28: I0>, I0>>, I0>>>,
I0>>>> (I0)
29…32:
I0d>, I0d>>, I0d>>>, I0d>>>>
(I0)
33: FLX
-
0: Not
in use
Selects the protection function and its stage to be used as the
source for the fault register recording.
The user can choose between non-directional overcurrent,
directional overcurrent, non-directional earth fault, directional
earth fault, and fault locator functions.
Select
record
trigger
0: TRIP signal
1: START signal
2: START and TRIP signals
-
0: TRIP
signal
Selects what triggers the fault register recording: the selected
function's TRIP signal, its START signal, or either one.
Recorded
fault
value
-
1000 000.00…1 000
000.00
0.01
-
Displays the recorded measurement value at the time of the
selected fault register trigger.
7.3. Real time measurements to communication
With the
Real-time signals to communication
menu the user can report to SCADA measurements that are
not normally available in the communication protocols mapping. Up to eight (8) magnitudes can be selected.
The recorded value can be either a per-unit value or a primary value (set by the user).
Measurable values
Function block uses analog current and voltage measurement values. The relay uses these values as the
basis when it calculates the primary and secondary values of currents, voltages, powers, impedances and
other values.
