![Arcteq AQ-F201 Instruction Manual Download Page 85](http://html1.mh-extra.com/html/arcteq/aq-f201/aq-f201_instruction-manual_2964912085.webp)
Operating time characteristics for trip and reset
This function supports definite time delay (DT) and inverse definite minimum time delay (IDMT). For
detailed information on these delay types please refer to the chapter "General properties of a protection
function" and its section "Operating time characteristics for trip and reset".
Events and registers
The non-directional earth fault function (abbreviated "NEF" in event block names) generates events and
registers from the status changes in START, TRIP and BLOCKED. The user can select which event
messages are stored in the main event buffer: ON, OFF, or both. The function offers three (3)
independent stages; the events are segregated for each stage operation.
The events triggered by the function are recorded with a time stamp and with process data values.
Table. 5.3.3 - 41. Event codes.
Event number
Event channel
Event block name
Event code
Description
1664
26
NEF1
0
Start ON
1665
26
NEF1
1
Start OFF
1666
26
NEF1
2
Trip ON
1667
26
NEF1
3
Trip OFF
1668
26
NEF1
4
Block ON
1669
26
NEF1
5
Block OFF
1728
27
NEF2
0
Start ON
1729
27
NEF2
1
Start OFF
1730
27
NEF2
2
Trip ON
1731
27
NEF2
3
Trip OFF
1732
27
NEF2
4
Block ON
1733
27
NEF2
5
Block OFF
1792
28
NEF3
0
Start ON
1793
28
NEF3
1
Start OFF
1794
28
NEF3
2
Trip ON
1795
28
NEF3
3
Trip OFF
1796
28
NEF3
4
Block ON
1797
28
NEF3
5
Block OFF
The function registers its operation into the last twelve (12) time-stamped registers; this information is
available for all provided instances separately. The register of the function records the ON event
process data for START, TRIP or BLOCKED. The table below presents the structure of the function's
register content.
Table. 5.3.3 - 42. Register content.
Date and
time
Event code
Fault
type
Trigger
current
Fault
current
Pre-fault
current
Trip time
remaining
Used SG
dd.mm.yyyy
hh:mm:ss.mss
1664-1797 Descr.
A-G-
R…C-
G-F
Start
average
current
Trip -20ms
averages
Start -200ms
averages
0
ms...1800s
Setting
group 1...8
active
A
AQ
Q-F201
-F201
Instruction manual
Version: 2.04
84