Siemens 7SJ82 - Directional 3 I0 Stage with Cos Φ or sin Φ Measurement

Direction-calculation angle error
94
≤ 1° at 3I0 > 5 mA, V0 = 0.6 V
≤ 2° at 3I0 ≤ 5 mA, V0 = 0.6 V
Directional 3I0 Stage with Cos φ or Sin φ Measurement
Setting Values
Direction method of measurement cos φ
sin φ
–
Threshold value
3I0>
Minimum direc-
tional 3I0> for
direction determi-
nation
Protection-class
current trans-
formers
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
For I
N
transformer
type sensitive
and I
N-rated
= 5 A
For I
ph-rated
=
1 A
0.005 A to 35.000 A Increments of 0.001 A
For I
ph-rated
=
5 A
0.005 A to 175.000 A Increments of 0.001 A
Threshold value V0> 0.300 V to 200.000 V Increments of 0.001 V
Time delay of the direction determination 0.00 s to 60.00 s Increments of 0.01 s
α1 constraint of the direction range
α2 constraint of the direction range
1° to 15° Increments of 1°
Angle correction φ -45° to 45° Increments of 1°
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. 32 ms + OOT
95
at 50 Hz
Approx. 29 ms + OOT at 60 Hz
Extension of the operate time during operation with
transformer inrush-current detection
Approx. 10 ms
12.18.2
94
Not applicable to 12.18.4 Directional 3I0 Stage with φ(V0,3I0) Measurement
95
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
SIPROTEC 5, Overcurrent Protection, Manual 1477
C53000-G5040-C017-8, Edition 07.2017