Siemens 7SJ85 - Directional Y0 Stage with G0 or B0 Measurement (Admittance)

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
Min. V0> for direction determination 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
Rotation angle of the reference voltage -180° to 180° Increments of 1°
Forward range +/- 0° to 180° 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. 23 ms + OOT
97
at 50 Hz
Approx. 21 ms + OOT at 60 Hz
Extension of operate time during operation with
transformer inrush-current detection
Approx. 10 ms
Dropout time Approx. 21 ms + OOT at 50 Hz
Approx. 20 ms + OOT at 60 Hz
Tolerances
Direction-calculation angle error
≤ 1° at 3I0 ≥ 10 mA, V0 = 0.6 V
≤ 2° at 2 mA < 3I0 < 10 mA, V0 = 0.6 V
≤ 3° at 3I0 ≤ 2 mA, V0 = 0.6 V
Directional Y0 Stage with G0 or B0 Measurement (Admittance)
Setting Values
Direction method of measurement
B0
G0
–
12.18.5
97
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 1479
C53000-G5040-C017-8, Edition 07.2017