Siemens 7SJ82 - Directional Transient Ground-Fault Stage; Directional 3 I0 Stage with Φ(V0,3 I0) Measurement

Dropout time Approx. 32 ms + OOT at 50 Hz
Approx. 27 ms + OOT at 60 Hz
Directional Transient Ground-Fault Stage
Setting Values
Threshold
value 3I0>
Protection-class
current transformers
For I
ph-rated
=
1 A
0.000 A to 35.000 A Increments of 0.001 A
For I
ph-rated
=
5 A
0.00 A to 175.00 A Increments of 0.01 A
Sensitive current
transformer for I
N
I
N-rated
= 1 A 0.000 A to 1.600 A Increments of 0.001 A
I
N-rated
= 5 A 0.000 A to 8.000 A Increments of 0.001 A
Threshold value V0> 0.300 V to 200.000 V Increments of 0.001 V
Maximum operational V0 0.300 V to 200.000 V Increments of 0.001 V
Dropout delay 0.00 s to 60.00 s Increments of 0.01 s
Tripping delay 0.00 s to 60.00 s Increments of 0.01 s
Dropout
The greater dropout differential (= | pickup value – dropout value |) of the following 2 criteria
applies:
Dropout differential derived from the parameter
Dropout ratio
If this parameter is not available, a dropout ratio of 95 % applies for overcurrent/overvoltage and of 105 % for
undercurrent/undervoltage functionality.
Minimum absolute dropout differential
Protection-class current transformer 15 mA sec. (I
rated
= 1 A) or
75 mA sec. (I
rated
= 5 A)
Instrument current transformer 0.5 mA sec. (I
rated
= 1 A) or
2.5 mA sec. (I
rated
= 5 A)
Voltage transformer 150 mV sec.
Times
Operate time with time delay = 0 ms
Approx. 115 ms + OOT
96
at 50 Hz
Approx. 112 ms + OOT at 60 Hz
Dropout time Approx. 20 ms + OOT at 50 Hz
Approx. 15 ms + OOT at 60 Hz
Directional 3I0 Stage with φ(V0,3I0) Measurement
Setting Values
Threshold value
3I0>
Protection-class
current transformers
For I
ph-rated
= 1 A 0.030 A to 35.000 A Increments of 0.001 A
For I
ph-rated
= 5 A 0.15 A to 175.00 A Increments of 0.01 A
For I
N
transformer type
sensitive
and I
N-rated
= 1 A
For I
ph-rated
= 1 A 0.001 A to 35.000 A Increments of 0.001 A
For I
ph-rated
= 5 A 0.001 A to 175.000 A Increments of 0.001 A
12.18.3
12.18.4
96
OOT (Output Operating Time): additional delay of the output medium used, see chapter 12.1.4 Relay Outputs
Technical Data
12.18 Sensitive Ground-Fault Detection
1478 SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017