Event Number
Event channel
Event block name
Event Code
Description
4999
78
DOC4
7
Voltage measurable, Blocking OFF
5000
78
DOC4
8
Measuring live angle ON
5001
78
DOC4
9
Measuring live angle OFF
5002
78
DOC4
10
Using voltmem ON
5003
78
DOC4
11
Using voltmem 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. 5.3.4 - 68. Register content.
Register name
Description
Date and time
dd.mm.yyyy hh:mm:ss.mss
Event code
4800-5003 Descr.
Fault type
L1-E...L1-L2-L3
Pre-trigger current
Start/Trip -20ms current
Fault current
Start/Trip current
Pre-fault current
Start -200ms averages
Trip time remaining
0s...1800s
Used SG
Setting group 1...8 active
Operating angle
0...250°
5.3.5 Directional earth fault protection (I0dir>; 67N/32N)
The directional earth fault function is used for instant and time-delayed earth fault
protection. A device with both voltage and current protection modules can have four (4) stages in the
function (I0dir>, I0dir>>, I0dir>>>, I0dir>>>>). The operating decisions are based on selected neutral
current and voltage magnitudes which the function constantly measures. The available residual current
magnitudes are RMS values, TRMS values (including harmonics up to 31
st
), or peak-to-peak values
that come from inputs I01 or I02 (residual current measurement) or from I0Calc (residual current
calculated from phase current measurements). The current angle is compared to the angle of
measured or calculated zero sequence voltage. A certain amount of zero sequence voltage has to be
present to activate the trip. The blocking signal and the setting group selection control the operating
characteristics of the function during normal operation, i.e. the user or user-defined logic can change
function parameters while the function is running.
The outputs of the function are the START, TRIP and BLOCKED signals. The directional earth fault
function uses a total of eight (8) separate setting groups which can be selected from one common
source.
The function can operate on instant or time-delayed mode. In the time-delayed mode the operation can
be selected for definite time (DT) or for inverse definite minimum time (IDMT); the IDMT operation
supports both IEC and ANSI standard time delays as well as custom parameters.
The operational logic consists of the following:
• input magnitude selection
• input magnitude processing
A
AQ
Q-F205
-F205
Instruction manual
Version: 2.04
© Arcteq Relays Ltd
IM00013
117
Содержание AQ F205
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Страница 379: ...Figure 7 4 245 Example block scheme A AQ Q F205 F205 Instruction manual Version 2 04 Arcteq Relays Ltd IM00013 377 ...
Страница 389: ...Figure 8 7 254 Device installation A AQ Q F205 F205 Instruction manual Version 2 04 Arcteq Relays Ltd IM00013 387 ...