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Signal
Description
Time base
I02FFT
The magnitudes (RMS) of residual I0
2
current components:
- Fundamental
- 2
nd
harmonic
- 3
rd
harmonic
- 4
th
harmonic
- 5
th
harmonic
- 6
th
harmonic
- 7
th
harmonic
- 9
th
harmonic
- 11
th
harmonic
- 13
th
harmonic
- 15
th
harmonic
- 17
th
harmonic
- 19
th
harmonic.
5 ms
The selection of the used AI channel, the monitored harmonic, and the monitoring type (per unit or
percentage of fundamental frequency) are made with setting parameters. In all possible input channel
variations the pre-fault condition is presented with a 20 ms averaged history value from -20 ms
from START or TRIP event.
General settings
The function can be set to monitor the ratio between the measured harmonic and either the measured
fundamental component or the per unit value of the harmonic current. The user must select the correct
measurement input.
Table. 5.4.6 - 85. Operating mode selection settings.
Name
Range
Default
Description
Harmonic
selection
2
nd
harmonic
3
rd
harmonic
4
th
harmonic
5
th
harmonic
6
th
harmonic
7
th
harmonic
9
th
harmonic
11
th
harmonic
13
th
harmonic
15
th
harmonic
17
th
harmonic
19
th
harmonic
2
nd
harmonic
Selection of the monitored harmonic component.
Per unit or
relative
× I
n
Ih/IL
× I
n
Selection of the monitored harmonic mode. Either directly per unit x
I
n
or in relation to
the fundamental frequency magnitude.
A
AQ
Q-C215
-C215
Instruction manual
Version: 2.07
© Arcteq Relays Ltd
IM00040
131
Содержание AQ-C215
Страница 1: ...AQ C215 Capacitor bank protection IED Instruction manual ...
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Страница 297: ...Figure 7 4 179 Example block scheme A AQ Q C215 C215 Instruction manual Version 2 07 Arcteq Relays Ltd IM00040 295 ...
Страница 318: ...Figure 8 14 200 Device installation A AQ Q C215 C215 Instruction manual Version 2 07 316 Arcteq Relays Ltd IM00040 ...
Страница 347: ...10 Ordering information A AQ Q C215 C215 Instruction manual Version 2 07 Arcteq Relays Ltd IM00040 345 ...