Siemens SIPROTEC 4, User Manual

Page: 46 / 734

inputs. If the device features a sensitive ground current input (measuring range starts at 1 mA), the ground
fault protection always uses the calculated variable 3I0. In this case, parameter 613
50N/51N/67N w.
is not
available.
Voltage Protection (Protection Operating Quantities)
In a three-phase connection, the fundamental harmonic of the largest of the three phase-to-phase voltages
(
Vphph
) or phase-to-ground voltages (
Vph-n
) or the positive sequence voltage (
V1
) or the negative sequence
voltage (
V2
) is supplied to the overvoltage protection elements. In three-phase connection, undervoltage
protection relies either on the positive sequence voltage (
V1
) or the smallest of the phase-to-phase voltages
(
Vphph
) or the phase-to-ground voltages (
Vph-n
). This is configured by setting the parameter value in
address 614
OP. QUANTITY 59
and 615
OP. QUANTITY 27
. With single-phase voltage transformer
connection, a direct comparison of the measured quantities with the threshold values is carried out and the
parameterization of the characteristic quantity switchover is ignored.
Settings
Addresses which have an appended “A” can only be changed with DIGSI, under “Additional Settings”.
The table indicates region-specific presettings. Column C (configuration) indicates the corresponding secon-
dary nominal current of the current transformer.
Addr. Parameter C Setting Options Default Setting Comments
201 CT Starpoint towards Line
towards Busbar towards Line CT Starpoint
202 Vnom PRIMARY 0.10 .. 800.00 kV 12.00 kV Rated Primary Voltage
203 Vnom SECONDARY 100 .. 225 V 100 V Rated Secondary Voltage
(L-L)
204 CT PRIMARY 10 .. 50000 A 100 A CT Rated Primary Current
205 CT SECONDARY 1A
5A 1A CT Rated Secondary
Current
206A Vph / Vdelta 0.10 .. 3.00 1.73 Matching ratio Phase-VT To
Open-Delta-VT
207 Vnom-PRI VT V4 0.10 .. 800.00 kV 12.00 kV VT Rated Primary Voltage
V4
208 Vnom-SEC VT V4 100 .. 225 V 100 V VT Rated Secondary
Voltage V4
209 PHASE SEQ. A B C
A C B A B C Phase Sequence
210A TMin TRIP CMD 0.01 .. 32.00 sec 0.15 sec Minimum TRIP Command
Duration
211A TMax CLOSE CMD 0.01 .. 32.00 sec 1.00 sec Maximum Close Command
Duration
212 BkrClosed I MIN 1A 0.04 .. 1.00 A 0.04 A Closed Breaker Min.
Current Threshold
5A 0.20 .. 5.00 A 0.20 A
213 VT Connect. 3ph Van, Vbn, Vcn
Vab, Vbc, VGnd
Vab, Vbc, Vx
Van,Vbn,Vcn,VGn
Van,Vbn,Vcn,VSy
Van,Vbn,Vcn,Vx Van, Vbn, Vcn VT Connection, three-
phase
214 Rated Frequency 50 Hz
60 Hz 50 Hz Rated Frequency
215 Distance Unit km
Miles km Distance measurement
unit
2.1.3.3
Functions
2.1 General
46 SIPROTEC 4, 7SJ62/64, Manual
C53000-G1140-C207-8, Edition 08.2016