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Arc Protection
Setting Values
Threshold I>
1 A @ 100 Irated
0.030 A to 35.000 A
Increments of 0.001 A
5 A @ 100 Irated
0.15 A to 175.00 A
Increments of 0.01 A
1 A @ 1.6 Irated
0.001 A to 1.600 A
Increments of 0.001 A
5 A @ 1.6 Irated
0.005 A to 8.000 A
Increments of 0.001 A
Threshold 3I0>>
1 A @ 100 Irated
0.030 A to 35.000 A
Increments of 0.001 A
5 A @ 100 Irated
0.15 A to 175.00 A
Increments of 0.01 A
1 A @ 1.6 Irated
0.001 A to 1.600 A
Increments of 0.001 A
5 A @ 1.6 Irated
0.005 A to 8.000 A
Increments of 0.001 A
External trip initiation
no
current
light
Operating mode
light only
current and light
Sensor
point sensor
line sensor
custom
Threshold light
-28.00 dB to 0.00 dB
Increments of 0.01
Channel
Possible settings, application-dependent
Dropout
The larger dropout differential (=
| pickup threshold – dropout threshold |
) of the following 2
criteria is used:
Dropout differential derived from the parameter
Dropout ratio
If this parameter is not available, a dropout ratio of 90 % applies to the current threshold values.
Minimum absolute dropout differential
Protection-class current transformers
15 mA sec. (I
rated
= 1 A) or
75 mA sec. (I
rated
= 5 A)
Instrument transformers
0.5 mA sec. (I
rated
= 1 A) or
2.5 mA sec. (I
rated
= 5 A)
Times
Shortest operate time
Operating mode = light only
Approx. 2.6 ms + OOT
76
Shortest operate time
Operating mode = Current and light
Approx. 4.0 ms + OOT at 50 Hz
Approx. 3.8 ms + OOT at 60 Hz
12.34
76
OOT (Output Operating Time): Additional delay of the output medium used, for example, 5 ms with fast relay, see chapter
Technical Data
12.34 Arc Protection
SIPROTEC 5, Merging Unit 6MU85, Manual
873
C53000-G5040-C074-1, Edition 01.2020