Measuring-Voltage Failure Detection
Setting Values
3ph.fail. - VA,VB,VC < 0.300 V to 340 000 V Increments of 0.001 V
3ph.fail. - phs.curr.release 1 A @ 50 and 100 Irated 0.030 A to 35.000 A Increments of 0.001 A
5 A @ 50 and 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
3ph.fail. - phs.curr. jump 1 A @ 50 and 100 Irated 0.030 A to 35.000 A Increments of 0.001 A
5 A @ 50 and 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
Asym.fail. - time delay 0.00 s to 30.00 s Increments of 0.01 s
SO 3ph.fail. - time delay 0.00 s to 30.00 s Increments of 0.01 s
Dropout
The larger dropout differential (= | pickup value – dropout threshold |) of the following 2 criteria
is used:
Dropout differential derived from the Dropout ratio parameter
If this parameter is not available, a dropout ratio of 95 % applies to the overvoltage protection and a dropout
ratio of 105 % applies to the undervoltage protection.
Minimum absolute dropout differential 150 mV sec.
Times
Pickup time
Approx. 10 ms + OOT
148
at 50 Hz
Approx. 10 ms + OOT at 60 Hz
Dropout time Approx. 20 ms + OOT
Times
Use in function group
Line
Pickup time
Approx. 10 ms + OOT
149
at 50 Hz
Approx. 9 ms + OOT at 60 Hz
Use in other function group types
Pickup time
Approx. 20 ms + OOT
150
at 50 Hz
Approx. 18 ms + OOT at 60 Hz
Frequency Operating Range
0.9 ≤ f/f
rated
≤ 1.1 According to specified tolerances
10 Hz ≤ f < 0.9 f
rated
1.1 f
rated
< f ≤ 80 Hz
Slightly expanded tolerances
12.68
148
OOT (Output Operating Time) Additional delay of the output medium used, see chapter 12.1.4 Relay Outputs
149
OOT (Output Operating Time) Additional delay of the output medium used, for example 5 ms with fast relays, see chapter
12.1.4 Relay Outputs
150
OOT (Output Operating Time) Additional delay of the output medium used, for example 5 ms with fast relays, see chapter
12.1.4 Relay Outputs
Technical Data
12.68 Measuring-Voltage Failure Detection
1562 SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017
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